This document proposes and tests an air conditioning ceiling fan that uses thermoelectric modules to provide thermal cooling effects.
The conventional ceiling fan only circulates air without changing its temperature. The proposed design mounts thermoelectric modules between the fan and ceiling to generate a cooling effect. A heat sink and phase change material are used to dissipate excess heat from the modules.
An experimental setup was constructed and temperature sensors were used to measure the temperature difference between a conventional fan and the proposed design. Results showed a 7-6 degree Celsius greater temperature reduction within 15-20 minutes for the air conditioning ceiling fan compared to the conventional fan.
IRJET- Design and Fabrication of Thermoelectric Generation SystemIRJET Journal
1. The document describes the design and fabrication of a thermoelectric generation system to convert waste heat from an internal combustion engine into electricity. Thermoelectric modules are mounted on the engine silencer to utilize the temperature difference between the hot exhaust surface and cooler atmosphere.
2. Testing of the system showed that connecting 4 thermoelectric modules in series generated a voltage of up to 1.74V with a temperature difference of 57°C across the modules. This demonstrates the feasibility of recovering some of the otherwise lost waste heat from engines.
3. Recovering even a small amount of waste heat using thermoelectric generators could improve overall engine efficiency without affecting engine performance. The system was able to successfully convert exhaust heat into a
Personal air-conditioning system using evapolar as heat waste managementjournalBEEI
Air-conditioning system that uses compressor-based initiate more energy and affects bill rate. As a result, an application of the Peltier impact module, a portable air-conditioning system is introduced to compensate user convenience by lowering sensible and latent heat inside the office area. Thermoelectric Peltier module is a thermoelectric semiconductor that offers cooling and hot plate once the plate is supplied by electric. The result reduces the cost, power consumption, and give thermal comfort in a dedicated space. The advantage of the study is the ability to cost deduction due to low power consumption and green technology devices factor because without refrigerant that harms the environment. Redesign the product with Evapolar as heat waste management affect the performance and need to be validated. The development stage of this product is better compared to a previous product which offers small scale, light, and portable. This product focuses on the office room, which gives a good feeling to users. This product uses air to remove the heat waste and the result indicates Evapolar is fit enough in dissipating heat. Finally, the performance of this system developed demonstrated that it can attain thermal comfort level.
ARM Based Climate Controlled Wearable JacketIJTET Journal
Thermo-electric (TE) technology is used in both electricity generation and air-conditioning. The Thermo-electric coolers(TEC) uses Peltier effect which converts the electrical energy applied from the ends of the Thermo-electric module into the temperature difference. The main objective of the work is to design a highly reliable and wearable jacket that controls extreme temperatures say working in thermal power plants, within the jacket. The extreme temperatures can be monitored using temperature sensors placed on both sides of the Thermo-electric cooler module and controlled using ARM LPC2148 Microcontroller. In Industries, this jacket provides a more practical and safer solutions for human working under extreme temperatures. Furthermore, this jacket can also be applied as a good warmer one for human beings working in cold regions(say Polar regions).
Performance evaluation of a air conditioner according to different test stand...IAEME Publication
The document discusses performance testing of air conditioners according to different standards. It describes the experimental setup of an air conditioner test room built according to ASHRAE standards, which consists of indoor and outdoor insulated rooms that maintain specified temperature and humidity conditions. The document outlines the cooling capacity test procedure, which involves recording data over several hours to determine airflow and enthalpy values needed to calculate the air conditioner's cooling capacity in kW and tons of refrigeration according to specified formulas.
Study of Thermoelectric Air Conditioning for AutomobilesIRJET Journal
This document discusses the study of using thermoelectric air conditioning for automobiles as an alternative to traditional HVAC systems. It begins by introducing thermoelectric modules, which can act as heat pumps using the Peltier effect to produce a temperature difference when current flows through them. Unlike traditional HVAC systems, thermoelectric air conditioning does not require compressors or pumps. The document then discusses the methodology, working principles based on the Peltier and Seebeck effects, configuration of thermoelectric modules, and aims to introduce a new HVAC system using thermoelectric modules to overcome disadvantages of existing systems such as environmental impact, energy efficiency, and cost.
Economically Analysis of Regenerative Air Preheater in Thermal Power PlantIRJET Journal
This document analyzes the economic impact of modifications made to the regenerative air preheaters at a thermal power plant in Chhabra, India. It finds that adjusting the axial seal plate and radial sector plate clearances improved the air preheater performance. This led to reduced air leakage, lower coal consumption by 2 tons per hour, and lower fan motor currents, saving approximately Rs. 830 million per year from lower coal and electricity costs. In summary, the document evaluates how minor modifications to an air preheater can significantly increase plant efficiency and reduce operating costs at a thermal power facility in India.
"Changing the way...the world cools."
Perfect Infraengineers Ltd. introduces all together new way of cooling our environment, for the first time in India. Now cool your environment with less energy consumption than before.
To know more, go through the slides.
This document describes the design of a multi-functional compressor system that can perform the functions of air conditioning, water cooling, and refrigeration simultaneously using a single compressor. The system aims to reduce energy consumption compared to separate systems for each function. It discusses the components and working principles of the system. The design details of the evaporator, condenser, and compressor are provided. The system offers benefits like lower power consumption, lower installation costs, and reduced space requirements compared to separate air conditioning, water cooling, and refrigeration systems. However, it is noted that the system has a lower capacity than large-scale industrial systems.
IRJET- Design and Fabrication of Thermoelectric Generation SystemIRJET Journal
1. The document describes the design and fabrication of a thermoelectric generation system to convert waste heat from an internal combustion engine into electricity. Thermoelectric modules are mounted on the engine silencer to utilize the temperature difference between the hot exhaust surface and cooler atmosphere.
2. Testing of the system showed that connecting 4 thermoelectric modules in series generated a voltage of up to 1.74V with a temperature difference of 57°C across the modules. This demonstrates the feasibility of recovering some of the otherwise lost waste heat from engines.
3. Recovering even a small amount of waste heat using thermoelectric generators could improve overall engine efficiency without affecting engine performance. The system was able to successfully convert exhaust heat into a
Personal air-conditioning system using evapolar as heat waste managementjournalBEEI
Air-conditioning system that uses compressor-based initiate more energy and affects bill rate. As a result, an application of the Peltier impact module, a portable air-conditioning system is introduced to compensate user convenience by lowering sensible and latent heat inside the office area. Thermoelectric Peltier module is a thermoelectric semiconductor that offers cooling and hot plate once the plate is supplied by electric. The result reduces the cost, power consumption, and give thermal comfort in a dedicated space. The advantage of the study is the ability to cost deduction due to low power consumption and green technology devices factor because without refrigerant that harms the environment. Redesign the product with Evapolar as heat waste management affect the performance and need to be validated. The development stage of this product is better compared to a previous product which offers small scale, light, and portable. This product focuses on the office room, which gives a good feeling to users. This product uses air to remove the heat waste and the result indicates Evapolar is fit enough in dissipating heat. Finally, the performance of this system developed demonstrated that it can attain thermal comfort level.
ARM Based Climate Controlled Wearable JacketIJTET Journal
Thermo-electric (TE) technology is used in both electricity generation and air-conditioning. The Thermo-electric coolers(TEC) uses Peltier effect which converts the electrical energy applied from the ends of the Thermo-electric module into the temperature difference. The main objective of the work is to design a highly reliable and wearable jacket that controls extreme temperatures say working in thermal power plants, within the jacket. The extreme temperatures can be monitored using temperature sensors placed on both sides of the Thermo-electric cooler module and controlled using ARM LPC2148 Microcontroller. In Industries, this jacket provides a more practical and safer solutions for human working under extreme temperatures. Furthermore, this jacket can also be applied as a good warmer one for human beings working in cold regions(say Polar regions).
Performance evaluation of a air conditioner according to different test stand...IAEME Publication
The document discusses performance testing of air conditioners according to different standards. It describes the experimental setup of an air conditioner test room built according to ASHRAE standards, which consists of indoor and outdoor insulated rooms that maintain specified temperature and humidity conditions. The document outlines the cooling capacity test procedure, which involves recording data over several hours to determine airflow and enthalpy values needed to calculate the air conditioner's cooling capacity in kW and tons of refrigeration according to specified formulas.
Study of Thermoelectric Air Conditioning for AutomobilesIRJET Journal
This document discusses the study of using thermoelectric air conditioning for automobiles as an alternative to traditional HVAC systems. It begins by introducing thermoelectric modules, which can act as heat pumps using the Peltier effect to produce a temperature difference when current flows through them. Unlike traditional HVAC systems, thermoelectric air conditioning does not require compressors or pumps. The document then discusses the methodology, working principles based on the Peltier and Seebeck effects, configuration of thermoelectric modules, and aims to introduce a new HVAC system using thermoelectric modules to overcome disadvantages of existing systems such as environmental impact, energy efficiency, and cost.
Economically Analysis of Regenerative Air Preheater in Thermal Power PlantIRJET Journal
This document analyzes the economic impact of modifications made to the regenerative air preheaters at a thermal power plant in Chhabra, India. It finds that adjusting the axial seal plate and radial sector plate clearances improved the air preheater performance. This led to reduced air leakage, lower coal consumption by 2 tons per hour, and lower fan motor currents, saving approximately Rs. 830 million per year from lower coal and electricity costs. In summary, the document evaluates how minor modifications to an air preheater can significantly increase plant efficiency and reduce operating costs at a thermal power facility in India.
"Changing the way...the world cools."
Perfect Infraengineers Ltd. introduces all together new way of cooling our environment, for the first time in India. Now cool your environment with less energy consumption than before.
To know more, go through the slides.
This document describes the design of a multi-functional compressor system that can perform the functions of air conditioning, water cooling, and refrigeration simultaneously using a single compressor. The system aims to reduce energy consumption compared to separate systems for each function. It discusses the components and working principles of the system. The design details of the evaporator, condenser, and compressor are provided. The system offers benefits like lower power consumption, lower installation costs, and reduced space requirements compared to separate air conditioning, water cooling, and refrigeration systems. However, it is noted that the system has a lower capacity than large-scale industrial systems.
Thermal analysis of cpu with variable baseplate heat sink using cfdeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Enhancing the performance of pv cell systemIRJET Journal
This document discusses enhancing the performance of PV cell systems through cooling. It describes designing a setup that uses water as a cooling medium below the PV panel to control overheating. As the water flows below the heated panel, it absorbs heat, thereby maintaining the panel's temperature for optimal efficiency. This cooling phenomenon reduces the panel's surface heat. The heated water is then collected and can be used for domestic applications, helping to cool the panel and utilize excess heat. Experimental results showed that without cooling, efficiency decreased with temperature, but the proposed water-based cooling method helped improve and maintain the performance rate.
It is most compact and precise presentation for the students doing their summer training from ntpc in control and instrumentation department.
Any kind of information can be taken from this slide regarding the controlling process the plant.
The electronics and communication students can get all information that is sufficient for the presentation on ntpc-singrauli
The document discusses the development of an air conditioner that uses thermoelectric Peltier modules for cooling rather than harmful refrigerants. Peltier modules operate based on the Peltier effect to absorb heat on one side and release heat on the other side by applying a voltage, providing cooling without emitting gases. The paper reviews prior research on thermoelectric air conditioners and describes the working principles and design of a Peltier-based air conditioner that could provide an environmentally-friendly alternative to conventional air conditioning systems.
IRJET- Design and Fabrication of Solar Air Heater to Increase Heat Transfer R...IRJET Journal
This document describes a study on enhancing heat transfer in solar air heaters through the use of artificial surface roughness. An experimental solar air heater was fabricated with an absorber plate containing V-shaped, discrete fins as artificial roughness. Temperature and pressure measurements were taken at various points along the air flow path through the heater over multiple days. The results showed an increase in heat transfer coefficient of 15-35% compared to a smooth surface, demonstrating that artificial roughness is an effective way to improve solar air heater performance.
Bca j energy efficiency uq mech4460 lecture 2013Ken Thomson
The lecture was provided to 3-4 years students doing the Course Mech4460 - Energy & Environment at the University of Queensland. The aim was to introduce energy efficiency and energy efficiency regulations in the built Environment.
Microcontroller Control Thermoelectric heating and Cooling System using TEC1 ...ijtsrd
Nowadays microcontroller based automatic temperature heating and cooling control system is designed and constructed for the drinking water. The main function of heating and cooling are done by thermoelectric module TEC1 12706. The PIC 16 series, PIC16F887 is used as the main controller of the control system which decides the water temperature based on ds1820. It is also intended to design a control system for a home appliance simply and to maintain and upgrade easily. The development of software for this control system is designed by using the MickroC Pro for PIC software. Khaing Thin Zar | Nyan Phyo Aung | Nandar Htway "Microcontroller Control Thermoelectric heating and Cooling System using TEC1-12706" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31673.pdf Paper Url :https://www.ijtsrd.com/engineering/electrical-engineering/31673/microcontroller-control-thermoelectric-heating-and-cooling-system-using-tec112706/khaing-thin-zar
Combined Efficiency Calculation of Bismuth Telluride and Lead Telluride in Th...IJMERJOURNAL
Abstract:- The heat rejected from an internal combustion engine is dumped into the atmosphere as waste heat. If this waste heat energy is tapped and converted into usable energy, the overall efficiency of an engine can be improved. The percentage of energy rejected to the environment through exhaust gas is approximately 30-40%.The thermoelectric generators are used for power generation . Thermoelectric modules which are used in thermoelectric generators are solid state devices that are used to convert thermal energy from a temperature gradient to electrical energy and it works on basic principle of Seebeck effect. The objective of this project is to include fin effect to increase cooling rate , to reduce the temperature by increasing the temperature difference and to use long fin and avoid accumulation of heat in between fins . The TEG system is directly connected to the exhaust pipe and the amount of electricity generated by the thermoelectric material is directly proportional to their heated area . The materials used in TEG are Bi2Te3 - Bismuth Telluride and PbTe - Lead Telluride . Bi2Te3 module TEG is highly efficient in room temperature , but heat withstanding capacity of Bi2Te3 is less than PbTe.The combination of these thermoelectric materials are used for better efficiency . The testing is done for above conditions and experimental results with this setup are performed and presented.
1) Thermoelectric incubators can reduce energy usage by up to 75% compared to traditional compressor-based incubators.
2) Testing showed the thermoelectric incubator only needed 110-120 watts to maintain temperature, while the compressor-based incubator constantly drew a high level of power even after reaching temperature.
3) Using thermoelectric incubators provides benefits like reduced maintenance needs, improved space utilization, and the potential to add battery backups for power outages due to the very low power requirements.
Modeling and performance evaluation of energy efficient buildings envelope us...Editor IJMTER
In the present study, the extended concept of exergy analysis has been applied to a building located in
New Delhi with a volume of 60 m3 and having a single-glazed window on the south facing wall .With this study
thermal energy and thermal exergy flow were investigated to calculate the total thermal energy and exergy in
and out from the building. This allows performing a complex exergy analysis of the building in both heating
and cooling cases. The calculations were carried out by using the developed mathematical model of building
and measured solar radiation data on horizontal and vertical wall surface. The thermal energy and thermal
exergy flows for a space of a typical residential building of natural ventilation system with different parametric
changes (i.e. wall thickness, roof thickness, window material properties, window dimensions, wall material
thermal conductivity ) have been modelled and compared from the reference case .
Model Based Embedded Control System Design for Smart HomeIRJET Journal
This document presents a model-based embedded control system design for a smart home. It discusses using model-based design approaches like Model-in-Loop and Hardware-in-Loop testing to model and test the control systems for smart home devices like a water heater, air conditioner, and ceiling fan before implementation. The proposed system would implement sensor networks and wireless technologies to remotely control home appliances from a central processing unit. It aims to provide a reliable, flexible and economical way to automate a home using model-based control system design approaches.
Thermoelectric refrigeration uses the Peltier effect to cool or heat the junction between two dissimilar conducting materials when electric current is passed through. Thermoelectric modules made of doped semiconductors like bismuth telluride are commercially available and have applications like mini-bar refrigerators and beverage coolers due to their compact size, reliability, and lack of moving parts. However, thermoelectric refrigeration has lower efficiency than vapor compression and requires improved materials and heat exchangers to approach vapor compression system efficiencies and see broader food sector applications.
This document summarizes an energy modeling analysis that compared the energy performance of seven common gas-fired heating systems for warehouses. The analysis found that direct-fired, high temperature rise blow-thru space heaters used 35-38% less natural gas and 92-93% less fan electricity than the ASHRAE 90.1 baseline system. Using any other type of heater increased energy use by 24-59% compared to the blow-thru heaters. Blow-thru heaters were determined to use the least amount of total energy to heat and ventilate large warehouses based on their design advantages of higher burner efficiency, more efficient controls, and higher discharge air temperatures.
Sustained power generation from low-grade heat. sk 270513Alex Prohorov
Minimal estimation for waste heat utilization in Russia is about $300M annually. From more then 4000 GPU we can utilize up to 18 GW additional electric power.
Various heat sources require different technical solutions. Heat-El fits for all.
IRJET- Optimization and CFD Analysis on Profile Elements of Regenerative Rota...IRJET Journal
This document discusses the optimization and computational fluid dynamics (CFD) analysis of different profile elements in a regenerative rotary air preheater. It begins with an introduction to rotary air preheaters and describes the various profile types used as heat transfer elements. Experimental measurements from a coal-fired power plant are presented. CFD models of five profile elements are analyzed to determine their outlet air and flue gas temperatures. The results show that the advanced clear element profile provides the best performance with higher air outlet temperature and lower flue gas outlet temperature compared to other profiles.
ATM-1000h - Power Module - Documentation V1.7shaukat1607
The document provides a technical description of the AQYLON ATM-1000H ORC Power Module. It includes:
1. Technical details of the ORC block design and system diagram, performance specifications, working fluid, operating conditions, power output, and cooling system.
2. Information on the footprint and arrangement of the power module in two stacked containers.
3. Safety and compliance standards that will be followed.
4. Descriptions of installation, operation, monitoring, shutdown, and emergency procedures.
5. Scope of supply including equipment, installation services, maintenance services, and cooling equipment.
Heat recovery single-room air handling unit for supply and exhaust ventilation.
Efficient energy-saving single-room ventilation of flats, houses, cottages, social and commercial premises.
Ideal solution for simple and efficient ventilation of new or refurbished premises.
Heat recovery minimises ventilation heat losses.
Controllable air exchange creates individually set microclimate
IRJET- A Review on Green Technology in HVACIRJET Journal
This document discusses green technologies that can be applied to HVAC systems to improve their energy efficiency. It focuses on solar powered air conditioning and ice powered air conditioning as two examples. Solar powered air conditioning uses photovoltaic panels to generate electricity to power an air conditioning system, avoiding the need for electricity from fossil fuel power plants. Ice powered air conditioning takes advantage of cheaper nighttime electricity to make ice for cooling, which is then melted during the day to provide air conditioning when demand and costs are higher. Both approaches aim to utilize renewable energy sources like solar and off-peak electricity to reduce HVAC energy consumption and costs while maintaining indoor comfort.
"Replacement of vapor compression system of domestic refrigerator by an eject...IRJET Journal
This document summarizes research on replacing vapor compression refrigeration systems with ejector refrigeration systems. It discusses how ejector refrigeration systems use low-grade waste heat as the power source, have fewer moving parts than compressors, and can help reduce greenhouse gas emissions. The document provides details on the design and testing of ejector refrigeration systems using various working fluids. It analyzes the performance of these systems and the impact of parameters like heat source temperature, refrigerant type, and ejector design on the system coefficient of performance.
IRJET- Heat Recovery from Commercial Kitchen using Thermoelectric GeneratorIRJET Journal
This document summarizes a study on using thermoelectric generators to convert waste heat from a commercial kitchen into electricity. Five "sandwiches" of three Peltier modules each connected in series and placed between heat sinks were attached to the chimney hood inside the kitchen. This position provided the greatest temperature difference. Observations showed the setup produced a maximum voltage of 4.5 volts, sufficient to power a DC light bulb, demonstrating the feasibility of recovering wasted heat through thermoelectric generation without moving parts.
Thermal analysis of cpu with variable baseplate heat sink using cfdeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Enhancing the performance of pv cell systemIRJET Journal
This document discusses enhancing the performance of PV cell systems through cooling. It describes designing a setup that uses water as a cooling medium below the PV panel to control overheating. As the water flows below the heated panel, it absorbs heat, thereby maintaining the panel's temperature for optimal efficiency. This cooling phenomenon reduces the panel's surface heat. The heated water is then collected and can be used for domestic applications, helping to cool the panel and utilize excess heat. Experimental results showed that without cooling, efficiency decreased with temperature, but the proposed water-based cooling method helped improve and maintain the performance rate.
It is most compact and precise presentation for the students doing their summer training from ntpc in control and instrumentation department.
Any kind of information can be taken from this slide regarding the controlling process the plant.
The electronics and communication students can get all information that is sufficient for the presentation on ntpc-singrauli
The document discusses the development of an air conditioner that uses thermoelectric Peltier modules for cooling rather than harmful refrigerants. Peltier modules operate based on the Peltier effect to absorb heat on one side and release heat on the other side by applying a voltage, providing cooling without emitting gases. The paper reviews prior research on thermoelectric air conditioners and describes the working principles and design of a Peltier-based air conditioner that could provide an environmentally-friendly alternative to conventional air conditioning systems.
IRJET- Design and Fabrication of Solar Air Heater to Increase Heat Transfer R...IRJET Journal
This document describes a study on enhancing heat transfer in solar air heaters through the use of artificial surface roughness. An experimental solar air heater was fabricated with an absorber plate containing V-shaped, discrete fins as artificial roughness. Temperature and pressure measurements were taken at various points along the air flow path through the heater over multiple days. The results showed an increase in heat transfer coefficient of 15-35% compared to a smooth surface, demonstrating that artificial roughness is an effective way to improve solar air heater performance.
Bca j energy efficiency uq mech4460 lecture 2013Ken Thomson
The lecture was provided to 3-4 years students doing the Course Mech4460 - Energy & Environment at the University of Queensland. The aim was to introduce energy efficiency and energy efficiency regulations in the built Environment.
Microcontroller Control Thermoelectric heating and Cooling System using TEC1 ...ijtsrd
Nowadays microcontroller based automatic temperature heating and cooling control system is designed and constructed for the drinking water. The main function of heating and cooling are done by thermoelectric module TEC1 12706. The PIC 16 series, PIC16F887 is used as the main controller of the control system which decides the water temperature based on ds1820. It is also intended to design a control system for a home appliance simply and to maintain and upgrade easily. The development of software for this control system is designed by using the MickroC Pro for PIC software. Khaing Thin Zar | Nyan Phyo Aung | Nandar Htway "Microcontroller Control Thermoelectric heating and Cooling System using TEC1-12706" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31673.pdf Paper Url :https://www.ijtsrd.com/engineering/electrical-engineering/31673/microcontroller-control-thermoelectric-heating-and-cooling-system-using-tec112706/khaing-thin-zar
Combined Efficiency Calculation of Bismuth Telluride and Lead Telluride in Th...IJMERJOURNAL
Abstract:- The heat rejected from an internal combustion engine is dumped into the atmosphere as waste heat. If this waste heat energy is tapped and converted into usable energy, the overall efficiency of an engine can be improved. The percentage of energy rejected to the environment through exhaust gas is approximately 30-40%.The thermoelectric generators are used for power generation . Thermoelectric modules which are used in thermoelectric generators are solid state devices that are used to convert thermal energy from a temperature gradient to electrical energy and it works on basic principle of Seebeck effect. The objective of this project is to include fin effect to increase cooling rate , to reduce the temperature by increasing the temperature difference and to use long fin and avoid accumulation of heat in between fins . The TEG system is directly connected to the exhaust pipe and the amount of electricity generated by the thermoelectric material is directly proportional to their heated area . The materials used in TEG are Bi2Te3 - Bismuth Telluride and PbTe - Lead Telluride . Bi2Te3 module TEG is highly efficient in room temperature , but heat withstanding capacity of Bi2Te3 is less than PbTe.The combination of these thermoelectric materials are used for better efficiency . The testing is done for above conditions and experimental results with this setup are performed and presented.
1) Thermoelectric incubators can reduce energy usage by up to 75% compared to traditional compressor-based incubators.
2) Testing showed the thermoelectric incubator only needed 110-120 watts to maintain temperature, while the compressor-based incubator constantly drew a high level of power even after reaching temperature.
3) Using thermoelectric incubators provides benefits like reduced maintenance needs, improved space utilization, and the potential to add battery backups for power outages due to the very low power requirements.
Modeling and performance evaluation of energy efficient buildings envelope us...Editor IJMTER
In the present study, the extended concept of exergy analysis has been applied to a building located in
New Delhi with a volume of 60 m3 and having a single-glazed window on the south facing wall .With this study
thermal energy and thermal exergy flow were investigated to calculate the total thermal energy and exergy in
and out from the building. This allows performing a complex exergy analysis of the building in both heating
and cooling cases. The calculations were carried out by using the developed mathematical model of building
and measured solar radiation data on horizontal and vertical wall surface. The thermal energy and thermal
exergy flows for a space of a typical residential building of natural ventilation system with different parametric
changes (i.e. wall thickness, roof thickness, window material properties, window dimensions, wall material
thermal conductivity ) have been modelled and compared from the reference case .
Model Based Embedded Control System Design for Smart HomeIRJET Journal
This document presents a model-based embedded control system design for a smart home. It discusses using model-based design approaches like Model-in-Loop and Hardware-in-Loop testing to model and test the control systems for smart home devices like a water heater, air conditioner, and ceiling fan before implementation. The proposed system would implement sensor networks and wireless technologies to remotely control home appliances from a central processing unit. It aims to provide a reliable, flexible and economical way to automate a home using model-based control system design approaches.
Thermoelectric refrigeration uses the Peltier effect to cool or heat the junction between two dissimilar conducting materials when electric current is passed through. Thermoelectric modules made of doped semiconductors like bismuth telluride are commercially available and have applications like mini-bar refrigerators and beverage coolers due to their compact size, reliability, and lack of moving parts. However, thermoelectric refrigeration has lower efficiency than vapor compression and requires improved materials and heat exchangers to approach vapor compression system efficiencies and see broader food sector applications.
This document summarizes an energy modeling analysis that compared the energy performance of seven common gas-fired heating systems for warehouses. The analysis found that direct-fired, high temperature rise blow-thru space heaters used 35-38% less natural gas and 92-93% less fan electricity than the ASHRAE 90.1 baseline system. Using any other type of heater increased energy use by 24-59% compared to the blow-thru heaters. Blow-thru heaters were determined to use the least amount of total energy to heat and ventilate large warehouses based on their design advantages of higher burner efficiency, more efficient controls, and higher discharge air temperatures.
Sustained power generation from low-grade heat. sk 270513Alex Prohorov
Minimal estimation for waste heat utilization in Russia is about $300M annually. From more then 4000 GPU we can utilize up to 18 GW additional electric power.
Various heat sources require different technical solutions. Heat-El fits for all.
IRJET- Optimization and CFD Analysis on Profile Elements of Regenerative Rota...IRJET Journal
This document discusses the optimization and computational fluid dynamics (CFD) analysis of different profile elements in a regenerative rotary air preheater. It begins with an introduction to rotary air preheaters and describes the various profile types used as heat transfer elements. Experimental measurements from a coal-fired power plant are presented. CFD models of five profile elements are analyzed to determine their outlet air and flue gas temperatures. The results show that the advanced clear element profile provides the best performance with higher air outlet temperature and lower flue gas outlet temperature compared to other profiles.
ATM-1000h - Power Module - Documentation V1.7shaukat1607
The document provides a technical description of the AQYLON ATM-1000H ORC Power Module. It includes:
1. Technical details of the ORC block design and system diagram, performance specifications, working fluid, operating conditions, power output, and cooling system.
2. Information on the footprint and arrangement of the power module in two stacked containers.
3. Safety and compliance standards that will be followed.
4. Descriptions of installation, operation, monitoring, shutdown, and emergency procedures.
5. Scope of supply including equipment, installation services, maintenance services, and cooling equipment.
Heat recovery single-room air handling unit for supply and exhaust ventilation.
Efficient energy-saving single-room ventilation of flats, houses, cottages, social and commercial premises.
Ideal solution for simple and efficient ventilation of new or refurbished premises.
Heat recovery minimises ventilation heat losses.
Controllable air exchange creates individually set microclimate
IRJET- A Review on Green Technology in HVACIRJET Journal
This document discusses green technologies that can be applied to HVAC systems to improve their energy efficiency. It focuses on solar powered air conditioning and ice powered air conditioning as two examples. Solar powered air conditioning uses photovoltaic panels to generate electricity to power an air conditioning system, avoiding the need for electricity from fossil fuel power plants. Ice powered air conditioning takes advantage of cheaper nighttime electricity to make ice for cooling, which is then melted during the day to provide air conditioning when demand and costs are higher. Both approaches aim to utilize renewable energy sources like solar and off-peak electricity to reduce HVAC energy consumption and costs while maintaining indoor comfort.
"Replacement of vapor compression system of domestic refrigerator by an eject...IRJET Journal
This document summarizes research on replacing vapor compression refrigeration systems with ejector refrigeration systems. It discusses how ejector refrigeration systems use low-grade waste heat as the power source, have fewer moving parts than compressors, and can help reduce greenhouse gas emissions. The document provides details on the design and testing of ejector refrigeration systems using various working fluids. It analyzes the performance of these systems and the impact of parameters like heat source temperature, refrigerant type, and ejector design on the system coefficient of performance.
IRJET- Heat Recovery from Commercial Kitchen using Thermoelectric GeneratorIRJET Journal
This document summarizes a study on using thermoelectric generators to convert waste heat from a commercial kitchen into electricity. Five "sandwiches" of three Peltier modules each connected in series and placed between heat sinks were attached to the chimney hood inside the kitchen. This position provided the greatest temperature difference. Observations showed the setup produced a maximum voltage of 4.5 volts, sufficient to power a DC light bulb, demonstrating the feasibility of recovering wasted heat through thermoelectric generation without moving parts.
This document presents a mathematical thermal model of a house to analyze temperature variation. It describes a simple rectangular house with one room and gable roof situated in a cold region. The model includes a thermostat and electric heater to control temperature. It analyzes heat transfer through walls and windows to calculate indoor temperature changes based on outdoor temperature. Results show indoor temperature varies according to climate and heating, while a system meter monitors electricity costs of operating the heater over time. The thermal model provides a way to study HVAC systems and improve house thermal design.
IRJET- Experimental Model Design and Simulation of Air Conditioning System fo...IRJET Journal
This document presents an experimental study on modeling and simulating an air conditioning system to reduce energy consumption. The study designed and tested an air conditioning model using MATLAB simulation. Parameters like room dimensions, material properties, and temperature were used to model heat transfer. Experimental tests were conducted in a room to validate the simulation results. Temperature and energy consumption were monitored and found to match closely between the model and experiment. The study concluded the simulated model results are consistent with experimental measuring device results.
1. The document discusses an Earth Tube Heat Exchanger system that uses geothermal energy for heating and cooling buildings. It can draw heat from the ground to warm a building in winter and release heat into the ground to cool a building in summer.
2. The system was analyzed using theoretical calculations and CFD simulations in ANSYS Fluent software. Key parameters like pipe diameter and air velocity were varied to analyze their effects on the system's coefficient of performance.
3. Modifying parameters like increasing pipe diameter and air velocity were found to have the most significant impact on improving the system's coefficient of performance. The Earth Tube Heat Exchanger provides an efficient alternative to conventional HVAC systems by making use of
This document discusses the design of an HVAC system for an AC room. It begins by outlining the importance of properly sizing the HVAC system to meet heating and cooling loads while minimizing energy costs. The document then describes the process for HVAC system design, which includes calculating heating and cooling loads, selecting appropriate equipment based on the loads, and evaluating design options. The objectives are to provide an energy efficient and comfortable indoor environment. Key steps in the design process are determining factors that influence loads, selecting a system, calculating loads using software, linking the system file to architectural plans, specifying zones, and evaluating efficiency.
IRJET - Portable Atmospheric Water GeneratorIRJET Journal
The document describes the design and testing of a portable atmospheric water generator. It uses thermoelectric Peltier modules to condense water from humid air by reducing the temperature of the air below the dew point. Four Peltier modules are used, along with fans and a wiping mechanism to increase water output. Testing showed a water output of approximately 5mL/hour. Potential reasons for the low output include a small Peltier cooling surface area and limitations of the Peltier modules used. The goal of the project is to provide a portable device for generating drinking water from atmospheric moisture.
This document discusses several methods for optimizing energy consumption in air conditioning plant systems, including improving chiller efficiency, fan power, humidity controls, cooling tower efficiency, chilled/condenser water pumps, chiller plant system control, under-floor systems, and energy recovery systems. It provides case studies on topics like chiller plant design concepts, efficient component selection, installation, commissioning, and operation to reduce energy usage by 30-50%.
This document discusses the design and analysis of an air-conditioned tricycle that uses thermoelectric cooling. The system uses multiple thermoelectric Peltier modules to absorb heat from the air and provide cooling. Rectangular fins and fiber sheets are used to improve heat transfer from the modules. The design is intended to provide cooling without using ozone-depleting refrigerants. Experimental results showed the thermoelectric system was able to achieve a cooling power of 50W per module with a coefficient of performance between 1.5-2. The document reviews several other studies on thermoelectric cooling systems and their advantages over traditional vapor-compression air conditioners.
Selecting air conditioners for enclosureerdinc klima
1) Choosing the right air conditioner for an industrial enclosure requires considering factors like internal heat loads, cooling capacity ratings, ambient conditions, and energy efficiency.
2) Internal heat loads from electronic components and ambient temperature/humidity can significantly impact an air conditioner's cooling capacity. Manufacturers rate capacity differently so performance diagrams and sizing tools are needed.
3) Calculating an air conditioner's efficiency by comparing its cooling capacity to power consumption helps identify the most cost-effective option. Humidity also affects the amount of condensate that needs removal.
Multipurpose Device Using Single Vapor Compression Refrigeration CycleIRJET Journal
This document describes a device that combines the functions of an air conditioner, water cooler, and refrigerator into a single unit using a single vapor compression refrigeration cycle. The device uses a refrigerator body to house the components, which include a compressor, condenser, expansion valve, and evaporator. Cool air is circulated using fans and water is cooled via a tube carrying water through the evaporator. The device aims to provide multiple cooling functions while reducing space and energy consumption compared to separate units. Performance tests found a coefficient of performance of 4.12, indicating the device efficiently provides integrated refrigeration, cooling, and water chilling.
EFFECT OF CRITICAL VOLUME AND ENCLOSURE SURFACE AREA IN A BIMETALLIC STEAM TR...IRJET Journal
This document discusses the effect of critical volume and enclosure surface area on the response of a bimetallic steam trap. A bimetallic steam trap works by using bimetallic elements that expand when exposed to steam heat, closing a valve. The critical volume around the elements and the trap's external surface area influence how much heat the elements receive. A heat transfer model was developed using CFD analysis to determine how heat is distributed within the critical volume and lost through the body. The results were used to optimize the critical volume and body design to ensure the elements receive enough energy to actuate properly. Testing showed the initial theoretical models did not match real responses, indicating the need to study how critical volume and surface area impact element response.
Self Sufficient Atmospheric Water Generator using Renewable EnergyIRJET Journal
This document summarizes a research paper on an atmospheric water generator (AWG) that uses renewable energy sources to operate independently. The proposed AWG design uses a peltier module powered by a solar panel and battery to cool air below its dew point and extract water. It discusses the construction of the system using various components like the solar panel, battery, heat pipe, exhaust fan and peltier module. The document also explains the working principle of how solar energy is used to power the peltier module and generate water from atmospheric moisture. Experimental results on water generation at different voltages are presented and factors affecting the system performance are discussed along with potential applications and scope for future improvement.
IRJET- Enhancement of COP of Vapor Compression Refrigeration Cycle using CFDIRJET Journal
This document discusses enhancing the coefficient of performance (COP) of a vapor compression refrigeration cycle using computational fluid dynamics (CFD).
It presents a study that uses a diffuser between the compressor and condenser to reduce the kinetic energy of the refrigerant leaving the compressor. This lowers the power input to the compressor, thereby improving the COP. Experimental results found adding a 15 degree divergence angle diffuser increased the COP from 3.83 to 5.55, a 31% enhancement.
The experimental results are validated using CFD modeling and analysis software. Modeling and meshing is done in ICEMCFD, analysis in CFX, and post-processing in CFD POST to verify the COP improvement
INTEGRATION OF WATER CHILLER AND AIR COOLERIRJET Journal
This document discusses the integration of a water chiller and air cooler unit using a single vapor compression refrigeration system. A T-joint with a split valve is used to direct refrigerant to the two evaporators. An Arduino controls the split valve position based on temperature sensors to allocate more refrigerant to the water chiller or air cooler as needed. Computational fluid dynamics analysis shows the pressure and velocity of refrigerant flowing through the T-joint with minimal pressure drop. Integrating the units could reduce costs compared to separate systems and be useful for applications like bus stations.
Financial Evaluation of Solar Powered Absorption Cooling System for Computer ...IRJET Journal
This document evaluates the financial feasibility of a solar powered absorption cooling system for a computer laboratory in Bharatpur, India. It finds that:
1. The system is technically feasible, achieving a solar fraction of 0.52-0.75 depending on the collector area. However,
2. Financially, the system is currently not feasible due to the high initial costs of absorption chillers and solar collectors. It provides only marginal annual savings, resulting in very high payback periods of 67-83 years.
3. A sensitivity analysis found that with reduced total investment costs (e.g. due to technology improvements) and increased electricity prices in the future, the payback period could decrease significantly
human recourse information system; public sector; performance; satisfaction o...IJERA Editor
Electric Water Heaters are widely used all over the world that can be categorized in two types i.e. Instant Water Heaters & Storage type Water Heaters. The energy consumption for 6 liter water heaters is much higher in the storage type of water heater. As energy is an important factor for economic development of country, therefore there is need to save the energy which implies the focus to use Storage type Water Heaters. In 6 Liter water heater, Existing model converting from 4 star rating to 5 star rating by thermal analysis & insulation. After the theoretical calculation of thickness of glass wool is the practical testing of product with BEE norms & got results for 5 Star Calculation. Finally we are doing the thermal analysis for theoretical & practical verification of the product
Design and Analysis of Air Conditioning System for An IT Office Buildingvivatechijri
The research is about the design and analysis of air conditioning system for comfort application in
an I.T. Office Building located in Mumbai. The different types of air conditioning systems have been studied
initially. The problem statement is provided by ISHRAE, that is; floor plans of the building. This is a new project,
and so building envelope design is also left to the researchers. Air conditioning or HVAC systems are a major
source of energy consumption in the building. So, it is necessary to design the right system of air conditioning
and install energy efficient equipment. Initially the building envelope has been researched and selected, then
cooling load calculations have been done. Based on the cooling demand a suitable air conditioning system is
being researched, after which the equipment selection is done. Energy calculations and life cycle cost analysis
has been done for the systems, and a suitable system has been selected for energy efficiency. Based on the research
and analysis, VRF system is recommended for air conditioning of this IT office building.
IRJET- Thermoelectrical Generator for Waste heat Recovery- ReviewIRJET Journal
This document reviews thermoelectric generators for recovering waste heat. It discusses how thermoelectric generators can directly convert waste heat into electrical energy in an environmentally friendly way. The document summarizes the operating principles of thermoelectric generators, which use the temperature difference across semiconductors to generate electricity. It also analyzes different heat exchanger designs and their impact on thermal uniformity and pressure drop when recovering heat from engine exhaust. Recovering only 30% of wasted heat could significantly improve engine efficiency.
Similar to IRJET- Air Conditioning Ceiling Fan by using Thermoelectric Module (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network