This document summarizes a research paper on designing a solar-powered cremation furnace. It discusses how traditional cremation uses large amounts of wood, resulting in environmental issues. The proposed solar cremation system uses a Scheffler reflector to concentrate sunlight onto a cremation chamber. It is designed to provide enough heat over 2 hours to fully cremate a human body. The reflector size is calculated based on the energy required. A tracking system is needed to follow the sun. A backup system like biomass is suggested for non-sunny days to ensure complete cremation as required by Hindu rituals. The document outlines the development process, including constructing the foundation, installing the reflector and chamber.
Solar furnaces use arrays of mirrors to concentrate sunlight and produce extremely high temperatures, as high as 3500°C. They have been experimented with since the 1770s but the first modern solar furnace was built in France in 1949. Solar furnaces use plane and parabolic mirrors - plane mirrors direct sunlight to parabolic mirrors which focus the beams. They can be used for industrial processes like metalworking but have limitations due to their size and placement requirements. Further research may help improve the technology and lower costs.
This document discusses renewable and non-renewable energy sources. The main renewable energy sources mentioned are solar, wind, tidal, geothermal, wave, and ocean thermal energy. Non-renewable sources listed are coal, petroleum, natural gas, and nuclear fuel. The need for renewable resources is discussed due to the increasing demand for fossil fuels and their harmful emissions. Advantages of renewable sources include being environmentally friendly and widely available, while disadvantages include containing energy in a diluted form and requiring expensive collection methods. Solar energy and different solar technologies like photovoltaic cells and solar thermal collectors are explained in detail.
Improvements in efficiency of solar parabolic troughIOSR Journals
Solar energy is primary source of all type of energy which is present in nature i.e. all the energy
derived from it. So, direct utilization of solar energy into useful energy is important. There are so many solar
thermal equipments in which concentrating type collector heated the fluid up to 100 to 4000C. It is employed for
a variety of applications such as power generation, industrial steam generation and hot water production.
Parabolic trough collector is preferred for steam generation because high temperatures can achieve.
Cylindrical parabolic trough type collector consists of selective concentrator and a receiver tube. The
selective cover system prevents the heat loss (convective and radiative) from the receiver tube and improves the
performance of solar parabolic trough. Also evacuated chamber is created to reduce the loss of heat and reduce
the corrosion of concentrator surface. Tracking system is embedded in the solar parabolic trough for tracking
the sun energy movement.
This report presents the evaluation of solar insolation in terms of monthly average hourly global
radiation in Patna on 10th April, 2013. On the basis of this solar energy flux, comparative study of the
instantaneous efficiency of solar parabolic trough is done. Here four different types of cover system are
mathematically analyzed. (i) Single glass cover on receiver (ii) Double glass cover on receiver (iii) Single glass
cover on aperture (iv)Double glass cover on aperture. This report contains many graphs to illustrate the effect
on instantaneous efficiency on variation of primary parameter. With the help of MATLAB R201a software
mathematical calculation is obtained.
DESIGN AND FABRICATION OF ADVANCED SOLAR WATER HEATERIRJET Journal
This document describes the design and fabrication of an advanced solar water heater. The proposed system uses a double exposure system with mirrors to reflect sunlight onto both sides of an aluminum flat plate solar collector, increasing the heating rate of water in the tubes. An evacuated flat plate collector is used for its high efficiency. A tracking system orients the collector to follow the sun's motion and further reflect sunlight, improving overall performance. The design aims to heat water faster and more efficiently than conventional solar water heaters through these enhanced collection and exposure methods. Testing showed the maximum water temperature reached 72°C, demonstrating effectiveness of the double exposure system and vacuum insulation for solar water heating.
Solar furnaces use an array of mirrors to concentrate sunlight and produce extremely high temperatures. They have existed since the 18th century but were first developed as a furnace in the 1940s in France. There are two main types - direct and heliostat - and they work by using plane and parabolic mirrors to focus sunlight at a focal point. Solar furnaces can be used for applications like generating steam power, cooking, drying foods, and melting metals. In Africa they have potential uses for cooking, agriculture, industry, and reducing environmental impacts. However, widespread commercial use of solar furnaces has been limited by their high costs and requirement for large spaces.
HEAT ENERGY COLLECTION VIA PARABOLIC SOLAR REFLECTORSRitesh Toppo
This document describes the development of a solar parabolic dish collector prototype for rural areas in India that lack access to electricity. The prototype uses a polished aluminum parabolic dish to concentrate solar radiation to a focal point, where the thermal energy can be used for cooking or other applications. The document discusses the design of the prototype, including a CAD model, and selection of appropriate materials for the reflector and other components, such as aluminum, fiberglass, and diamond-shaped glass. The goal is to provide a low-cost solar energy solution for heating and cooking needs in off-grid rural communities.
IRJET- Ameliorate the Performance of PV Module by Inventing Heat Dissipat...IRJET Journal
This document describes a study that aimed to develop a passive heat dissipation system to improve the performance of photovoltaic (PV) modules. PV module efficiency decreases with higher temperatures, as heat absorbed from solar irradiation is not easily dissipated. The researchers designed a system using aluminum heat sinks attached to the back of a PV module with thermal grease. Testing showed that with the heat dissipation system in place, the module's average power output increased by 2.96% over two days of testing compared to without the system, demonstrating that it successfully reduced the module temperature and improved efficiency as intended.
The document analyzes the performance of a dual axis parabolic solar trough collector using various reflecting materials, including acrylic mirror sheet, aluminum sheet, and silver foil. An experimental setup is used to collect temperature and efficiency data over time as water is circulated through the collector. The results show that silver foil achieved the highest maximum hourly efficiency of 48.04%, followed by acrylic mirror sheet at 44.47% and aluminum sheet at 42.82%.
Solar furnaces use arrays of mirrors to concentrate sunlight and produce extremely high temperatures, as high as 3500°C. They have been experimented with since the 1770s but the first modern solar furnace was built in France in 1949. Solar furnaces use plane and parabolic mirrors - plane mirrors direct sunlight to parabolic mirrors which focus the beams. They can be used for industrial processes like metalworking but have limitations due to their size and placement requirements. Further research may help improve the technology and lower costs.
This document discusses renewable and non-renewable energy sources. The main renewable energy sources mentioned are solar, wind, tidal, geothermal, wave, and ocean thermal energy. Non-renewable sources listed are coal, petroleum, natural gas, and nuclear fuel. The need for renewable resources is discussed due to the increasing demand for fossil fuels and their harmful emissions. Advantages of renewable sources include being environmentally friendly and widely available, while disadvantages include containing energy in a diluted form and requiring expensive collection methods. Solar energy and different solar technologies like photovoltaic cells and solar thermal collectors are explained in detail.
Improvements in efficiency of solar parabolic troughIOSR Journals
Solar energy is primary source of all type of energy which is present in nature i.e. all the energy
derived from it. So, direct utilization of solar energy into useful energy is important. There are so many solar
thermal equipments in which concentrating type collector heated the fluid up to 100 to 4000C. It is employed for
a variety of applications such as power generation, industrial steam generation and hot water production.
Parabolic trough collector is preferred for steam generation because high temperatures can achieve.
Cylindrical parabolic trough type collector consists of selective concentrator and a receiver tube. The
selective cover system prevents the heat loss (convective and radiative) from the receiver tube and improves the
performance of solar parabolic trough. Also evacuated chamber is created to reduce the loss of heat and reduce
the corrosion of concentrator surface. Tracking system is embedded in the solar parabolic trough for tracking
the sun energy movement.
This report presents the evaluation of solar insolation in terms of monthly average hourly global
radiation in Patna on 10th April, 2013. On the basis of this solar energy flux, comparative study of the
instantaneous efficiency of solar parabolic trough is done. Here four different types of cover system are
mathematically analyzed. (i) Single glass cover on receiver (ii) Double glass cover on receiver (iii) Single glass
cover on aperture (iv)Double glass cover on aperture. This report contains many graphs to illustrate the effect
on instantaneous efficiency on variation of primary parameter. With the help of MATLAB R201a software
mathematical calculation is obtained.
DESIGN AND FABRICATION OF ADVANCED SOLAR WATER HEATERIRJET Journal
This document describes the design and fabrication of an advanced solar water heater. The proposed system uses a double exposure system with mirrors to reflect sunlight onto both sides of an aluminum flat plate solar collector, increasing the heating rate of water in the tubes. An evacuated flat plate collector is used for its high efficiency. A tracking system orients the collector to follow the sun's motion and further reflect sunlight, improving overall performance. The design aims to heat water faster and more efficiently than conventional solar water heaters through these enhanced collection and exposure methods. Testing showed the maximum water temperature reached 72°C, demonstrating effectiveness of the double exposure system and vacuum insulation for solar water heating.
Solar furnaces use an array of mirrors to concentrate sunlight and produce extremely high temperatures. They have existed since the 18th century but were first developed as a furnace in the 1940s in France. There are two main types - direct and heliostat - and they work by using plane and parabolic mirrors to focus sunlight at a focal point. Solar furnaces can be used for applications like generating steam power, cooking, drying foods, and melting metals. In Africa they have potential uses for cooking, agriculture, industry, and reducing environmental impacts. However, widespread commercial use of solar furnaces has been limited by their high costs and requirement for large spaces.
HEAT ENERGY COLLECTION VIA PARABOLIC SOLAR REFLECTORSRitesh Toppo
This document describes the development of a solar parabolic dish collector prototype for rural areas in India that lack access to electricity. The prototype uses a polished aluminum parabolic dish to concentrate solar radiation to a focal point, where the thermal energy can be used for cooking or other applications. The document discusses the design of the prototype, including a CAD model, and selection of appropriate materials for the reflector and other components, such as aluminum, fiberglass, and diamond-shaped glass. The goal is to provide a low-cost solar energy solution for heating and cooking needs in off-grid rural communities.
IRJET- Ameliorate the Performance of PV Module by Inventing Heat Dissipat...IRJET Journal
This document describes a study that aimed to develop a passive heat dissipation system to improve the performance of photovoltaic (PV) modules. PV module efficiency decreases with higher temperatures, as heat absorbed from solar irradiation is not easily dissipated. The researchers designed a system using aluminum heat sinks attached to the back of a PV module with thermal grease. Testing showed that with the heat dissipation system in place, the module's average power output increased by 2.96% over two days of testing compared to without the system, demonstrating that it successfully reduced the module temperature and improved efficiency as intended.
The document analyzes the performance of a dual axis parabolic solar trough collector using various reflecting materials, including acrylic mirror sheet, aluminum sheet, and silver foil. An experimental setup is used to collect temperature and efficiency data over time as water is circulated through the collector. The results show that silver foil achieved the highest maximum hourly efficiency of 48.04%, followed by acrylic mirror sheet at 44.47% and aluminum sheet at 42.82%.
Modified solar collector annexed with residential solar cookerIAEME Publication
This document summarizes a study on modifying a residential solar cooker by adding vacuum tubes filled with phase change materials (PCM) to enable nighttime cooking. The system uses a parabolic collector to concentrate sunlight into vacuum tubes containing PCM and copper coils. Heat is transferred to a cooker jacket through insulated pipes. A pump circulates water to cook food at temperatures up to 150°C. PCM stores excess heat for nighttime cooking. Calculations determine the required PCM mass is 57kg, which can be filled in two 124mm diameter vacuum tubes holding 40kg total, with the remaining 17kg stored in an insulated box. This modified solar cooker aims to reduce reliance on fuels like LPG for cooking.
IRJET- Analysing Efficiency of Solar Collector using ETC Absorber TubeIRJET Journal
The document analyzes the efficiency of a solar collector using an evacuated tube (ETC) absorber. It describes testing a parabolic trough solar collector initially and then with different absorbers to enhance performance. Testing was conducted at KIET, Ghaziabad from morning to evening. Results found that efficiency increased by around 8% when using an ETC tube compared to other absorbers. The highest temperature difference of 23.3°C was achieved with the ETC tube at an air flow rate of 28.5 kg/hr. Overall, the efficiency of an ordinary collector was 9-21% during the day, which increased to 10-23.4% when using an ETC absorber tube.
concentrated solar power technology - cspSANTHOSHRAJ60
1) The document discusses various concentrated solar power technologies including parabolic trough systems, power tower systems, dish Stirling systems, and Fresnel collectors. It provides details on how each technology works and examples of projects in India.
2) Global CSP markets are dominated by Spain and the US, but costs are decreasing and markets are expanding. India has some CSP projects but significant potential for growth.
3) The document outlines environmental impacts of CSP including water use and effects on wildlife, and discusses future technologies like solar chimneys and solar ponds. It also mentions potential future technologies like microwave transmitting satellites.
STUDY OF SOLAR THERMAL CAVITY RECEIVER FOR PARABOLIC CONCENTRATING COLLECTOR ijiert bestjournal
Energy is one of the building blocks of the country . The growth of the country has been fueled by chea p,abundant energy resources. Solar energy is a form of renewable ener gy which is available abundantly and collected unre servedly. The parabolic concentrator reflects the direct incident solar rad iation onto a receiver mounted above the dish at it s focal point. The conversion of concentrated solar radiation to heat takes place in receiver. The heat transfer characteristics of the receiver changes during the rotation of the receiver which affects thermal performance. The working temperature may also influence the ther mal performance and overall efficiency of the system. Thermal as well as optica l losses affect the performance of a solar paraboli c dish-cavity receiver system. The thermal losses of a solar cavity receiver include c onvective and radiative losses to the air in the ca vity and conductive heat loss through the insulation used behind the helical tube surface. Convective and radiative heat losses form the major constituents of the thermal losses. The convection heat loss from cavit y receiver in parabolic dish solar thermal power sy stem can significantly reduce the efficiency and consequently the cost effectiveness of the system. It is important to assess this heat loss and subsequently improve the thermal performance of the receiver.
Fabrication, Designing & Performance Analysis of Solar Parabolic TroughIJERA Editor
A parabolic trough solar collector uses a parabolic cylinder to reflect and concentrate sun radiations towards a receiver tube located at the focus line of the parabolic cylinder. The receiver absorbs the incoming radiations and transforms them into thermal energy, the latter being transported and collected by a fluid medium circulating within the receiver tube.This method of concentrated solar collection has the advantage of high efficiency and low cost, and can be used either for thermal energy collection, for generating electricity or for both, This paper focused on the fabrication and designing of solar parabolic trough, The designing of trough is depend upon the following parameters : Aperture of the concentrator , Inner diameter of absorber tube, Outer diameter of absorber tube, Inner diameter of glass tube, Outer diameter of glass tube, Length of parabolic trough, Concentration ratio, Collector aperture area, Specular reflectivity of concentrator, Glass cover transitivity for solar radiation, Absorber tube emissivity/emissivity, Intercept factor, Emissivity of absorber tube surface and Emissivity of glass. The performance analysis will be based on the Experimental data collection and calculations with reference to: Thermal performance calculations, Overall loss coefficient and heat correlations. Heat transfer coefficient on the inside surface of the absorber tube and Heat transfer coefficient between the absorber tube and the Cover.
IRJET - Advance Hybrid Solar Energy Saver Heater with Electrical BackupIRJET Journal
1) The document discusses an advance hybrid solar energy saver heater that uses both solar and electrical power sources to heat water.
2) It provides hot water using solar energy captured by a collector and stored in an insulated tank, with an electric heating element as backup for rainy or cloudy days.
3) The system uses a thermostat to automatically turn the electric heating element on when water temperature drops below 50°C, heating it to 75-85°C and then turning off to save energy.
It is possible to consider that adsorption systems can be alternative to reduce the CO2 emissions and electricity demand when they driven by waste heat or solar energy. Although, for a broader utilization the researches should continue aiming for improvements in heat transfer,reductions of new adsorbent compounds with enhanced adsorption capacity and improved heat and mass transfer properties.
This document compares an Indian innovation, the solar cooker, to a foreign innovation, the induction cooker. It provides background on each type of cooker, including how they work, their history, advantages, and disadvantages. The solar cooker uses sunlight to cook and heat food, while the induction cooker uses electromagnetic induction to directly heat cookware on the stove. The document concludes by comparing and contrasting the key aspects of both cooking methods.
The document summarizes concentrated solar power (CSP) technology. It discusses four main CSP designs - parabolic troughs, tower systems, linear troughs, and parabolic dishes. Parabolic troughs are the most common currently, making up over 90% of installed CSP generation capacity. Tower systems are expected to become more widely used. Molten salt is highlighted as an important development, allowing CSP plants to operate at higher temperatures and efficiencies while enabling thermal energy storage for electricity generation after sunset or when solar irradiance is low.
Studying & Evaluating the Performance of Solar Box Cookers (Untracked)ijceronline
This document summarizes a study evaluating the performance of an untracked solar box cooker. The study tested a homemade solar box cooker with three different water quantities (1.5kg, 1kg, and 0.5kg) to determine the effect on temperature rise. Testing found that cooking temperature increased with higher solar intensity and decreased with higher water mass. The highest standardized cooking power of 650W was achieved with 1.5kg of water. In conclusion, higher water mass resulted in higher cooking performance but lower temperature, so an adequate mass is preferred for efficiency.
This document discusses the components and design of a green building in India. It provides details of the electrical load calculation and sizing of the solar PV system to power the building. The building would use a 3KW solar PV system with a 2.5KVA inverter to meet its 4KW peak load. It also includes specifications for the solar water heater, solar air heater, and solar cooker to utilize solar energy for heating and cooking needs. The methodology section outlines the research approach, including literature reviews, data collection from construction projects, and identifying new green building techniques.
CONCENTRATED SOLAR THERMAL POWER GENERATIONKrishan Yadav
Concentrated solar thermal power generation uses mirrors to collect and concentrate sunlight to produce steam and drive turbines to generate electricity. It has several advantages over photovoltaic solar generation including the ability to store thermal energy for generating electricity when the sun is not shining. The document discusses the history and development of concentrated solar thermal technology. It describes the basic working principle and four main types - parabolic trough, power tower, solar dish, and Fresnel reflectors. Advantages include no fuel costs and ability to generate power 24/7 with thermal storage, while disadvantages are high initial costs and large land requirements. The current global installed capacity is around 4.8 GW with India's first plant coming online in 2013 with a planned
Energy being a crucial input in the process of social, economical and industrial development, plays a vital role
in our daily lives. The present trends show a continuous increase in the energy demands, with a
simultaneous reduction in the available conventional energy resources. Hence, there is an urgent need to
come up with energy efficient alternatives, such as developing devices that employ renewable energy
resources. Sol Aura is one such product that holds the potential to replace conventional heaters that employ
electrical energy. Sol Aura utilizes solar energy for the required energy conversion and thus, increase the
temperature of indoor areas. The paper presents the product design and the related mathematical computations.
Future scope and the advantages have also been covered within the scope of the paper.
PERFORMANCE STUDY OF A PHASE CHANGE MATERIAL ASSISTED SOLAR STILLIAEME Publication
A Solar still is a simple device, which is used to produce drinking water using energy of sun. Its low productivity is of great concern. Lauric acid is used as energy storage medium in the solar still to produce drinking water in the off sunshine hours. To examine the effects of use of PCM in the solar still for same total daily solar intensity on energy and exergy efficiency, experiments were carried out on two similar double slope solar still at Allahabad (250 28ꞌN, 810 54ꞌE) U.P. India. PCM is used in one of the still for the purpose of comparison with conventional still. It is observed that the exergy efficiency increases by 40% when lauric acid is used as energy storage medium in the solar still.
This document provides an overview of solar energy, including its history, current applications, and future potential. It discusses how solar energy works and the two key components (collectors and storage). Applications mentioned include solar thermal technologies for water and space heating, electricity production, cooking, process heat, and desalination. The document also reviews various energy storage methods and the development, deployment, and economics of solar power over history.
Solar energy is a renewable resource that comes from the sun. It can be used to generate electricity through methods like photovoltaics or concentrated solar power, or to heat and cool buildings. While solar energy has many benefits, its widespread adoption faces challenges related to intermittent availability, storage, and the large land and material resources required. Future prospects include new concentrating and luminescent solar technologies as well as potentially placing solar arrays in space to collect energy unaffected by Earth's conditions.
A Review on Different Techniques Employed for Enhancing Performance of Solar ...IRJET Journal
The document discusses several studies that investigated methods for improving the efficiency of solar panels. It summarizes the following key points:
1) One study found that using simple mirror techniques, like flat reflectors, to focus more sunlight onto solar panels can enhance their performance by increasing energy output.
2) Other research concluded that maintaining optimal temperatures is important for solar panel efficiency, and that incorporating basic cooling systems can improve energy generation.
3) Additional experiments determined that combining reflectors with cooling achieved even better efficiency gains than with just reflectors or cooling alone. Placement of two mirrors at a 60 degree angle provided the best results.
Abstract:
Concentrated Solar Power (CSP) technology is one of the most promising candidate for mitigating the future energy crisis. The extracted power from CSP technology is very clean, reliable and environmental friendly. An overview of CSP technologies like Parabolic Trough, Solar Tower, Parabolic Dish, Linear Fresnel technology have been described in this paper. Comparison among these technologies has been illustrated in this work. For extenuating the present power crisis in Bangladesh CSP technology has great opportunities, since the average Direct Normal Irradiance (DNI) in Bangladesh is 4-6.5 KWh/m 2 which is suitable for all types of CSP technology. Suitable locations for different CSP plants in Bangladesh are also proposed on the basis of efficiency, required area and amount of DNI received.
DOI: 10.1109/ECACE.2017.7913020
IRJET- Optimisation of Solar Collector’s Efficiency using Copper TubeIRJET Journal
1. The document discusses optimizing the efficiency of a solar collector by using a copper tube filled with pebbles as the absorber.
2. Test results showed using the copper tube with pebbles increased maximum air temperature by about 20°C and collector efficiency by about 6% compared to using a plain copper tube.
3. Convection losses were reduced and heat transfer rate increased significantly when using the copper tube filled with pebbles absorber configuration.
The document is a work report submitted by Vishal Chandrashekhar, a Junior Research Fellow at the Indian Institute of Science in Bangalore, summarizing the projects he worked on during his tenure from August 2013 to May 2014. It describes four key projects: 1) Developing a partial solar power system for train coaches to reduce fuel consumption, which has been successfully implemented on some train prototypes. 2) Maintaining a rooftop solar tracker to study efficiency compared to fixed panels and developing a wind-aware tracking algorithm. 3) Fabricating an experimental solar-powered refrigeration system using adsorption technology. 4) Installing a concentrated photovoltaic system atop a building to generate more power from less silicon.
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
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Modified solar collector annexed with residential solar cookerIAEME Publication
This document summarizes a study on modifying a residential solar cooker by adding vacuum tubes filled with phase change materials (PCM) to enable nighttime cooking. The system uses a parabolic collector to concentrate sunlight into vacuum tubes containing PCM and copper coils. Heat is transferred to a cooker jacket through insulated pipes. A pump circulates water to cook food at temperatures up to 150°C. PCM stores excess heat for nighttime cooking. Calculations determine the required PCM mass is 57kg, which can be filled in two 124mm diameter vacuum tubes holding 40kg total, with the remaining 17kg stored in an insulated box. This modified solar cooker aims to reduce reliance on fuels like LPG for cooking.
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The document analyzes the efficiency of a solar collector using an evacuated tube (ETC) absorber. It describes testing a parabolic trough solar collector initially and then with different absorbers to enhance performance. Testing was conducted at KIET, Ghaziabad from morning to evening. Results found that efficiency increased by around 8% when using an ETC tube compared to other absorbers. The highest temperature difference of 23.3°C was achieved with the ETC tube at an air flow rate of 28.5 kg/hr. Overall, the efficiency of an ordinary collector was 9-21% during the day, which increased to 10-23.4% when using an ETC absorber tube.
concentrated solar power technology - cspSANTHOSHRAJ60
1) The document discusses various concentrated solar power technologies including parabolic trough systems, power tower systems, dish Stirling systems, and Fresnel collectors. It provides details on how each technology works and examples of projects in India.
2) Global CSP markets are dominated by Spain and the US, but costs are decreasing and markets are expanding. India has some CSP projects but significant potential for growth.
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STUDY OF SOLAR THERMAL CAVITY RECEIVER FOR PARABOLIC CONCENTRATING COLLECTOR ijiert bestjournal
Energy is one of the building blocks of the country . The growth of the country has been fueled by chea p,abundant energy resources. Solar energy is a form of renewable ener gy which is available abundantly and collected unre servedly. The parabolic concentrator reflects the direct incident solar rad iation onto a receiver mounted above the dish at it s focal point. The conversion of concentrated solar radiation to heat takes place in receiver. The heat transfer characteristics of the receiver changes during the rotation of the receiver which affects thermal performance. The working temperature may also influence the ther mal performance and overall efficiency of the system. Thermal as well as optica l losses affect the performance of a solar paraboli c dish-cavity receiver system. The thermal losses of a solar cavity receiver include c onvective and radiative losses to the air in the ca vity and conductive heat loss through the insulation used behind the helical tube surface. Convective and radiative heat losses form the major constituents of the thermal losses. The convection heat loss from cavit y receiver in parabolic dish solar thermal power sy stem can significantly reduce the efficiency and consequently the cost effectiveness of the system. It is important to assess this heat loss and subsequently improve the thermal performance of the receiver.
Fabrication, Designing & Performance Analysis of Solar Parabolic TroughIJERA Editor
A parabolic trough solar collector uses a parabolic cylinder to reflect and concentrate sun radiations towards a receiver tube located at the focus line of the parabolic cylinder. The receiver absorbs the incoming radiations and transforms them into thermal energy, the latter being transported and collected by a fluid medium circulating within the receiver tube.This method of concentrated solar collection has the advantage of high efficiency and low cost, and can be used either for thermal energy collection, for generating electricity or for both, This paper focused on the fabrication and designing of solar parabolic trough, The designing of trough is depend upon the following parameters : Aperture of the concentrator , Inner diameter of absorber tube, Outer diameter of absorber tube, Inner diameter of glass tube, Outer diameter of glass tube, Length of parabolic trough, Concentration ratio, Collector aperture area, Specular reflectivity of concentrator, Glass cover transitivity for solar radiation, Absorber tube emissivity/emissivity, Intercept factor, Emissivity of absorber tube surface and Emissivity of glass. The performance analysis will be based on the Experimental data collection and calculations with reference to: Thermal performance calculations, Overall loss coefficient and heat correlations. Heat transfer coefficient on the inside surface of the absorber tube and Heat transfer coefficient between the absorber tube and the Cover.
IRJET - Advance Hybrid Solar Energy Saver Heater with Electrical BackupIRJET Journal
1) The document discusses an advance hybrid solar energy saver heater that uses both solar and electrical power sources to heat water.
2) It provides hot water using solar energy captured by a collector and stored in an insulated tank, with an electric heating element as backup for rainy or cloudy days.
3) The system uses a thermostat to automatically turn the electric heating element on when water temperature drops below 50°C, heating it to 75-85°C and then turning off to save energy.
It is possible to consider that adsorption systems can be alternative to reduce the CO2 emissions and electricity demand when they driven by waste heat or solar energy. Although, for a broader utilization the researches should continue aiming for improvements in heat transfer,reductions of new adsorbent compounds with enhanced adsorption capacity and improved heat and mass transfer properties.
This document compares an Indian innovation, the solar cooker, to a foreign innovation, the induction cooker. It provides background on each type of cooker, including how they work, their history, advantages, and disadvantages. The solar cooker uses sunlight to cook and heat food, while the induction cooker uses electromagnetic induction to directly heat cookware on the stove. The document concludes by comparing and contrasting the key aspects of both cooking methods.
The document summarizes concentrated solar power (CSP) technology. It discusses four main CSP designs - parabolic troughs, tower systems, linear troughs, and parabolic dishes. Parabolic troughs are the most common currently, making up over 90% of installed CSP generation capacity. Tower systems are expected to become more widely used. Molten salt is highlighted as an important development, allowing CSP plants to operate at higher temperatures and efficiencies while enabling thermal energy storage for electricity generation after sunset or when solar irradiance is low.
Studying & Evaluating the Performance of Solar Box Cookers (Untracked)ijceronline
This document summarizes a study evaluating the performance of an untracked solar box cooker. The study tested a homemade solar box cooker with three different water quantities (1.5kg, 1kg, and 0.5kg) to determine the effect on temperature rise. Testing found that cooking temperature increased with higher solar intensity and decreased with higher water mass. The highest standardized cooking power of 650W was achieved with 1.5kg of water. In conclusion, higher water mass resulted in higher cooking performance but lower temperature, so an adequate mass is preferred for efficiency.
This document discusses the components and design of a green building in India. It provides details of the electrical load calculation and sizing of the solar PV system to power the building. The building would use a 3KW solar PV system with a 2.5KVA inverter to meet its 4KW peak load. It also includes specifications for the solar water heater, solar air heater, and solar cooker to utilize solar energy for heating and cooking needs. The methodology section outlines the research approach, including literature reviews, data collection from construction projects, and identifying new green building techniques.
CONCENTRATED SOLAR THERMAL POWER GENERATIONKrishan Yadav
Concentrated solar thermal power generation uses mirrors to collect and concentrate sunlight to produce steam and drive turbines to generate electricity. It has several advantages over photovoltaic solar generation including the ability to store thermal energy for generating electricity when the sun is not shining. The document discusses the history and development of concentrated solar thermal technology. It describes the basic working principle and four main types - parabolic trough, power tower, solar dish, and Fresnel reflectors. Advantages include no fuel costs and ability to generate power 24/7 with thermal storage, while disadvantages are high initial costs and large land requirements. The current global installed capacity is around 4.8 GW with India's first plant coming online in 2013 with a planned
Energy being a crucial input in the process of social, economical and industrial development, plays a vital role
in our daily lives. The present trends show a continuous increase in the energy demands, with a
simultaneous reduction in the available conventional energy resources. Hence, there is an urgent need to
come up with energy efficient alternatives, such as developing devices that employ renewable energy
resources. Sol Aura is one such product that holds the potential to replace conventional heaters that employ
electrical energy. Sol Aura utilizes solar energy for the required energy conversion and thus, increase the
temperature of indoor areas. The paper presents the product design and the related mathematical computations.
Future scope and the advantages have also been covered within the scope of the paper.
PERFORMANCE STUDY OF A PHASE CHANGE MATERIAL ASSISTED SOLAR STILLIAEME Publication
A Solar still is a simple device, which is used to produce drinking water using energy of sun. Its low productivity is of great concern. Lauric acid is used as energy storage medium in the solar still to produce drinking water in the off sunshine hours. To examine the effects of use of PCM in the solar still for same total daily solar intensity on energy and exergy efficiency, experiments were carried out on two similar double slope solar still at Allahabad (250 28ꞌN, 810 54ꞌE) U.P. India. PCM is used in one of the still for the purpose of comparison with conventional still. It is observed that the exergy efficiency increases by 40% when lauric acid is used as energy storage medium in the solar still.
This document provides an overview of solar energy, including its history, current applications, and future potential. It discusses how solar energy works and the two key components (collectors and storage). Applications mentioned include solar thermal technologies for water and space heating, electricity production, cooking, process heat, and desalination. The document also reviews various energy storage methods and the development, deployment, and economics of solar power over history.
Solar energy is a renewable resource that comes from the sun. It can be used to generate electricity through methods like photovoltaics or concentrated solar power, or to heat and cool buildings. While solar energy has many benefits, its widespread adoption faces challenges related to intermittent availability, storage, and the large land and material resources required. Future prospects include new concentrating and luminescent solar technologies as well as potentially placing solar arrays in space to collect energy unaffected by Earth's conditions.
A Review on Different Techniques Employed for Enhancing Performance of Solar ...IRJET Journal
The document discusses several studies that investigated methods for improving the efficiency of solar panels. It summarizes the following key points:
1) One study found that using simple mirror techniques, like flat reflectors, to focus more sunlight onto solar panels can enhance their performance by increasing energy output.
2) Other research concluded that maintaining optimal temperatures is important for solar panel efficiency, and that incorporating basic cooling systems can improve energy generation.
3) Additional experiments determined that combining reflectors with cooling achieved even better efficiency gains than with just reflectors or cooling alone. Placement of two mirrors at a 60 degree angle provided the best results.
Abstract:
Concentrated Solar Power (CSP) technology is one of the most promising candidate for mitigating the future energy crisis. The extracted power from CSP technology is very clean, reliable and environmental friendly. An overview of CSP technologies like Parabolic Trough, Solar Tower, Parabolic Dish, Linear Fresnel technology have been described in this paper. Comparison among these technologies has been illustrated in this work. For extenuating the present power crisis in Bangladesh CSP technology has great opportunities, since the average Direct Normal Irradiance (DNI) in Bangladesh is 4-6.5 KWh/m 2 which is suitable for all types of CSP technology. Suitable locations for different CSP plants in Bangladesh are also proposed on the basis of efficiency, required area and amount of DNI received.
DOI: 10.1109/ECACE.2017.7913020
IRJET- Optimisation of Solar Collector’s Efficiency using Copper TubeIRJET Journal
1. The document discusses optimizing the efficiency of a solar collector by using a copper tube filled with pebbles as the absorber.
2. Test results showed using the copper tube with pebbles increased maximum air temperature by about 20°C and collector efficiency by about 6% compared to using a plain copper tube.
3. Convection losses were reduced and heat transfer rate increased significantly when using the copper tube filled with pebbles absorber configuration.
The document is a work report submitted by Vishal Chandrashekhar, a Junior Research Fellow at the Indian Institute of Science in Bangalore, summarizing the projects he worked on during his tenure from August 2013 to May 2014. It describes four key projects: 1) Developing a partial solar power system for train coaches to reduce fuel consumption, which has been successfully implemented on some train prototypes. 2) Maintaining a rooftop solar tracker to study efficiency compared to fixed panels and developing a wind-aware tracking algorithm. 3) Fabricating an experimental solar-powered refrigeration system using adsorption technology. 4) Installing a concentrated photovoltaic system atop a building to generate more power from less silicon.
Similar to Review Solar Powered Furnace Cremation Process (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.
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.
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEMHODECEDSIET
Time Division Multiplexing (TDM) is a method of transmitting multiple signals over a single communication channel by dividing the signal into many segments, each having a very short duration of time. These time slots are then allocated to different data streams, allowing multiple signals to share the same transmission medium efficiently. TDM is widely used in telecommunications and data communication systems.
### How TDM Works
1. **Time Slots Allocation**: The core principle of TDM is to assign distinct time slots to each signal. During each time slot, the respective signal is transmitted, and then the process repeats cyclically. For example, if there are four signals to be transmitted, the TDM cycle will divide time into four slots, each assigned to one signal.
2. **Synchronization**: Synchronization is crucial in TDM systems to ensure that the signals are correctly aligned with their respective time slots. Both the transmitter and receiver must be synchronized to avoid any overlap or loss of data. This synchronization is typically maintained by a clock signal that ensures time slots are accurately aligned.
3. **Frame Structure**: TDM data is organized into frames, where each frame consists of a set of time slots. Each frame is repeated at regular intervals, ensuring continuous transmission of data streams. The frame structure helps in managing the data streams and maintaining the synchronization between the transmitter and receiver.
4. **Multiplexer and Demultiplexer**: At the transmitting end, a multiplexer combines multiple input signals into a single composite signal by assigning each signal to a specific time slot. At the receiving end, a demultiplexer separates the composite signal back into individual signals based on their respective time slots.
### Types of TDM
1. **Synchronous TDM**: In synchronous TDM, time slots are pre-assigned to each signal, regardless of whether the signal has data to transmit or not. This can lead to inefficiencies if some time slots remain empty due to the absence of data.
2. **Asynchronous TDM (or Statistical TDM)**: Asynchronous TDM addresses the inefficiencies of synchronous TDM by allocating time slots dynamically based on the presence of data. Time slots are assigned only when there is data to transmit, which optimizes the use of the communication channel.
### Applications of TDM
- **Telecommunications**: TDM is extensively used in telecommunication systems, such as in T1 and E1 lines, where multiple telephone calls are transmitted over a single line by assigning each call to a specific time slot.
- **Digital Audio and Video Broadcasting**: TDM is used in broadcasting systems to transmit multiple audio or video streams over a single channel, ensuring efficient use of bandwidth.
- **Computer Networks**: TDM is used in network protocols and systems to manage the transmission of data from multiple sources over a single network medium.
### Advantages of TDM
- **Efficient Use of Bandwidth**: TDM all
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
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.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
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
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
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.