A Pitched Roof with Forced Ventilation to Limit
Solar Gains by Enrico Caffagni, Antonio Libbra, Alberto Muscio* and Luca Tarozzi in Advancements in Civil Engineering & Technology
- Stack ventilation is a passive cooling strategy that relies on warm air rising and being replaced by cooler ambient air. It creates natural air currents with warm air evacuating through a high point and cooler outdoor air entering at a lower level.
- For the system to function properly, the indoor-outdoor air temperature difference needs to be at least 1.7 degrees Celsius. A greater temperature difference provides more effective air circulation and cooling.
- Increasing the height of a stack or using solar energy to heat the air in the stack can both increase the temperature difference between entering and exiting air.
Green Building:Energy Efficient Air-Conditioningjvitek
This powerpoint illustrates the research done on the passive cooling methods of earth tube systems and solar chimneys in Florida\'s sub-tropical climate.
The document discusses Earth Air Tunnels (EAT), a passive cooling system that uses the constant underground temperature to cool buildings. EAT works by pumping air through underground pipes/tunnels 4 meters deep, where the temperature remains stable year-round. Key factors that affect EAT performance include pipe design parameters, soil properties, air velocity, and system operation as open or closed loop. EAT provides both cooling and heating, is low cost to operate, and can be used for various building types from homes to hospitals. However, EAT requires significant space and has a high initial installation cost.
Does_My_Building_Envelope_Really_Need_a_RetrofitKyle Taylor
This document summarizes a study conducted on an existing single-family home in South Carolina to evaluate the impact of air sealing the building envelope on energy usage. The key points are:
- Initial blower door tests found the building envelope was relatively tight, but duct leakage contributed significantly to whole-house air infiltration.
- Air sealing areas around the building envelope had no measurable impact on whole-house air infiltration in post-retrofit tests.
- Analysis of energy bills before and after the retrofit showed no decrease in energy consumption, indicating the envelope modifications were ineffective at reducing energy usage.
- The results suggest that while the building envelope was relatively airtight, duct leakage was a more significant
This document provides an overview of thermal insulation in buildings. It discusses heat transfer mechanisms like conduction, convection, and radiation. It defines key terms like U-value and R-value and describes different types of thermal insulation materials. Benefits of insulation like reduced energy consumption and increased comfort are outlined. The significance of insulation for Saudi Arabian buildings given the hot climate is also reviewed. Finally, efforts by the Saudi government to promote energy efficiency and green building practices are briefly mentioned.
Natural Ventilation and Hydronic Cooling in Humid Climatesaiahouston
This document provides an overview of natural ventilation and hydronic cooling systems in humid climates like the Gulf Coast. It discusses human thermal comfort, natural ventilation approaches and benefits, mixed-mode ventilation, hydronic cooling system types like chilled beams, and design considerations for controlling humidity and moisture. The key advantages of these systems are energy savings when conditions allow for natural ventilation and more effective heat transfer through water-based systems. Controls integration and addressing humidity are important challenges.
This document provides a summary of a lecture on heat transfer in buildings and climatic design. It covers several topics:
1. Methods of heat transfer including conduction, convection, and radiation.
2. Factors that affect thermal comfort including air temperature, relative humidity, air velocity, and clothing insulation.
3. The concept of microclimate and how indoor microclimate impacts user comfort and health.
4. Guidelines for designing buildings for thermal comfort including typical environmental variables like dry bulb temperature, relative humidity, and air velocity.
The document summarizes research on the use of earth air tunnels and wind towers as passive solar techniques. Key findings include:
- Earth air tunnels circulate air through underground pipes to take advantage of the stable temperature 4 meters below ground for cooling in summer and heating in winter. Testing showed the technique can reduce ambient temperatures by up to 14 degrees Celsius.
- Wind towers circulate air through tall shafts to cool air entering buildings at night and provide downward airflow of cooled air during the day.
- Experimental testing of an earth air tunnel system over multiple months found maximum temperature reductions of 33% in spring and minimum reductions of 15% in summer.
- Stack ventilation is a passive cooling strategy that relies on warm air rising and being replaced by cooler ambient air. It creates natural air currents with warm air evacuating through a high point and cooler outdoor air entering at a lower level.
- For the system to function properly, the indoor-outdoor air temperature difference needs to be at least 1.7 degrees Celsius. A greater temperature difference provides more effective air circulation and cooling.
- Increasing the height of a stack or using solar energy to heat the air in the stack can both increase the temperature difference between entering and exiting air.
Green Building:Energy Efficient Air-Conditioningjvitek
This powerpoint illustrates the research done on the passive cooling methods of earth tube systems and solar chimneys in Florida\'s sub-tropical climate.
The document discusses Earth Air Tunnels (EAT), a passive cooling system that uses the constant underground temperature to cool buildings. EAT works by pumping air through underground pipes/tunnels 4 meters deep, where the temperature remains stable year-round. Key factors that affect EAT performance include pipe design parameters, soil properties, air velocity, and system operation as open or closed loop. EAT provides both cooling and heating, is low cost to operate, and can be used for various building types from homes to hospitals. However, EAT requires significant space and has a high initial installation cost.
Does_My_Building_Envelope_Really_Need_a_RetrofitKyle Taylor
This document summarizes a study conducted on an existing single-family home in South Carolina to evaluate the impact of air sealing the building envelope on energy usage. The key points are:
- Initial blower door tests found the building envelope was relatively tight, but duct leakage contributed significantly to whole-house air infiltration.
- Air sealing areas around the building envelope had no measurable impact on whole-house air infiltration in post-retrofit tests.
- Analysis of energy bills before and after the retrofit showed no decrease in energy consumption, indicating the envelope modifications were ineffective at reducing energy usage.
- The results suggest that while the building envelope was relatively airtight, duct leakage was a more significant
This document provides an overview of thermal insulation in buildings. It discusses heat transfer mechanisms like conduction, convection, and radiation. It defines key terms like U-value and R-value and describes different types of thermal insulation materials. Benefits of insulation like reduced energy consumption and increased comfort are outlined. The significance of insulation for Saudi Arabian buildings given the hot climate is also reviewed. Finally, efforts by the Saudi government to promote energy efficiency and green building practices are briefly mentioned.
Natural Ventilation and Hydronic Cooling in Humid Climatesaiahouston
This document provides an overview of natural ventilation and hydronic cooling systems in humid climates like the Gulf Coast. It discusses human thermal comfort, natural ventilation approaches and benefits, mixed-mode ventilation, hydronic cooling system types like chilled beams, and design considerations for controlling humidity and moisture. The key advantages of these systems are energy savings when conditions allow for natural ventilation and more effective heat transfer through water-based systems. Controls integration and addressing humidity are important challenges.
This document provides a summary of a lecture on heat transfer in buildings and climatic design. It covers several topics:
1. Methods of heat transfer including conduction, convection, and radiation.
2. Factors that affect thermal comfort including air temperature, relative humidity, air velocity, and clothing insulation.
3. The concept of microclimate and how indoor microclimate impacts user comfort and health.
4. Guidelines for designing buildings for thermal comfort including typical environmental variables like dry bulb temperature, relative humidity, and air velocity.
The document summarizes research on the use of earth air tunnels and wind towers as passive solar techniques. Key findings include:
- Earth air tunnels circulate air through underground pipes to take advantage of the stable temperature 4 meters below ground for cooling in summer and heating in winter. Testing showed the technique can reduce ambient temperatures by up to 14 degrees Celsius.
- Wind towers circulate air through tall shafts to cool air entering buildings at night and provide downward airflow of cooled air during the day.
- Experimental testing of an earth air tunnel system over multiple months found maximum temperature reductions of 33% in spring and minimum reductions of 15% in summer.
Natural ventilation utilizes differences in air pressure, temperature and wind to ventilate buildings without mechanical systems. There are several types of natural ventilation including stack ventilation, wind towers and courtyard effects. Stack ventilation uses temperature differences to draw warm air out of tall rooms or structures. Wind towers cool incoming air through evaporation before distributing it inside. Courtyards create rising warm air that is replaced by cooler air entering at lower levels. Proper building orientation, openings, cross ventilation and tall structures can optimize natural airflow. While it provides free ventilation, natural ventilation has less control over air quality than mechanical systems.
Underfloor heating and cooling uses conduction, radiation, and convection to achieve indoor climate control through thermal comfort. It has a long history dating back thousands of years. Modern systems use either electric heating elements or hydronic piping systems to heat the floor. Hydronic systems circulate heated water through pipes, while electric systems use flexible heating cables or mats. Underfloor heating provides thermal comfort, improves indoor air quality, and can enhance energy efficiency when used in high-performance buildings with renewable energy sources like geothermal or solar thermal.
This document proposes a radiant cooling system for a building project utilizing an underfloor cooling system embedded in screed below flooring and a Thermally Active Building System installed in ceilings. Both systems would connect to earth piles for geothermal energy use. Controls would manage supply temperature according to dew point to prevent condensation. Two reference projects are described that achieved energy class A+ ratings using similar radiant cooling systems coupled with geothermal energy - a 750m2 villa in Greece and the 4500m2 American University of Beirut student center project utilizing seawater cooling.
Building ventilation involves introducing outdoor air into indoor spaces to provide fresh air and remove stale, polluted air. It can occur through natural means using wind and buoyancy, mechanical means using fans and blowers, or a hybrid approach. The key purposes of ventilation are to dilute indoor pollutants, replenish oxygen, regulate temperature, and improve occupant comfort. Effective ventilation considers the rate of outdoor air introduced, overall airflow directions from clean to dirty zones, and efficient air distribution throughout the space.
This topic explains the importance of ventilation in a building. Identification on types of ventilation and air conditioning system, methods of installation of air conditioning system and its components.
Natural ventilation relies on wind and temperature differences to flow fresh air through a building without mechanical systems. It is best suited for open plan layouts and areas with minimal noise pollution. The benefits include energy savings, reduced environmental impact, and robustness. To be effective, natural ventilation must be planned early in the design process with a team approach to meet the client's objectives. Equations are provided to calculate airflow based on factors like opening area, wind velocity, and indoor/outdoor temperature difference. Considerations like inlet/outlet placement and sizing are also discussed.
This document discusses energy efficient ventilation systems. It covers various passive ventilation techniques that can reduce energy consumption compared to mechanical ventilation. These include natural ventilation, cross ventilation, earth air tunnels, and passive cooling and heating methods. The document also reviews literature on ventilation and surveys energy usage for ventilation in homes. The conclusion is that passive ventilation techniques are important for natural ventilation and can significantly reduce energy usage while increasing air circulation, making buildings more eco-friendly.
Lecture 8 heating ventilation & air-conditioningBekark
This document discusses heating, ventilation, and air conditioning (HVAC) systems. It begins by explaining how HVAC principles influence architectural design. It then provides descriptions of common HVAC components and systems, including air handlers, makeup air units, rooftop units, fan coil units, constant air volume systems, and variable air volume systems. The document also discusses heating systems such as fireplaces, stoves, heat pumps, solar heating, and portable units. It covers ventilation methods and factors like indoor air quality. Finally, it addresses HVAC energy efficiency considerations for heating, air conditioning, and thermodynamics.
Example of natural air ventilation using CFD modellingStephane Meteodyn
Urbawind is a CFD software dedicated to quantify the natural air ventilation of buildings.
Such tool is useful to design green buildings where wind is used to improve the indoor thermal comfort with cross ventilation.
Objective is to determine project improvements from indoor thermal comfort and energy saving points of view.
For example, for a site study of natural air ventilation induced by wind in urban places, you can obtain:
– Mapping of wind speed and pressure
– Assess the natural air ventilation thanks to the computation of the air exchange rate
– Optimise the positions of openings according to the micro climatology
go to : http://meteodyn.com/en/logiciels/cfd-wind-pedestrian-comfort-safety-urbawind-software/#modules-tab
Taking a basic office design and making recommendations to reduce energy consumption, lower the carbon footprint and provide passive means of ventilating and cooling the building together with improving natural light while reducing solar gains
This document discusses heating and cooling load calculations for buildings. It covers calculating heating loads by estimating transmission heat losses through walls, infiltration, and ductwork. Cooling load calculations are more complex as they consider time-varying outdoor conditions and internal heat gains. Methods for calculating cooling loads include using the Cooling Load Temperature Difference (CLTD) method for walls and roofs and considering solar heat gain factors for windows. The assumptions behind design cooling loads and calculating people loads are also outlined.
The document discusses different types of windows used in buildings. It describes windows for habitable rooms, kitchens, and toilets with their typical sizes. It discusses controlling windows based on rain, wind speed, and outside temperature. Different types of windows are described like top hung, casement, sliding sash, and fixed lights. Windows serve purposes like natural light, weather exclusion, security, insulation, and privacy. The document also discusses stack ventilation and using clerestory windows to admit daylight.
Earth Air Tunnels utilize the constant underground temperature to provide buildings with air conditioning. The tunnels work best for large buildings by allowing air pumped through to attain the cooler earth temperature. Variables like tunnel length, depth, diameter, and air/earth temperature differences determine effectiveness. Earth Air Tunnels have been successfully used at TERI retreat in Delhi to maintain living quarters between 20-30°C year-round.
Natural ventilation and air movement could-be considered under the heading of 'structural controls’ as it does not rely on any form of energy supply or mechanical installation, but due to its importance for human comfort, it deserves a separate section.
This document discusses ventilation and air movement in buildings. It covers natural ventilation strategies like wind patterns, opening positions and sizes, and stack effect. Cross ventilation and the venturi effect are explained as ways to induce air flow. Maintaining indoor air quality by supplying fresh air and removing pollutants requires careful ventilation design considering factors like wind direction, constrictions to increase speed, and opening placement and size. Various techniques are presented, like wind scoops, jets and tunnels, to study air movement and optimize ventilation performance in buildings.
The document discusses various methods of air movement in buildings, including the effects of wind, turbulence, ventilation needs, and different techniques like cross-ventilation, the venturi effect, stack effect, solar chimneys, fans, and courtyards. Air movement in buildings is caused by wind pressure, the stack effect, and combustion/ventilation, and pairing a large outlet with a small inlet can increase incoming wind speed. Building structures can redirect winds to enable cross-ventilation, while fans, courtyards, and effects like the stack effect and solar chimneys also facilitate air flow. Ventilation is important for removing odors and providing fresh air as well as heating and cooling buildings.
Journal of energy buildings m carlsson_finalAmiran Bokhua
The document discusses a proposed retrofit strategy for high-rise residential buildings involving compartmentalizing apartment units and installing decentralized heat recovery ventilators in each unit. A case study building in Vancouver, Canada underwent an energy model simulation to analyze the impact of this proposed retrofit. The simulation found the proposed retrofit reduced annual space heating energy by 49% and associated greenhouse gas emissions by 70%. When combined with a previous enclosure retrofit, space heating energy was reduced by 78% and greenhouse gas emissions by 83%. The proposed retrofit would also improve indoor air quality through more effective ventilation distribution compared to the existing corridor pressurization system.
This document summarizes an article from the journal Energy and Buildings. The article presents a model of a heating, ventilation and air conditioning (HVAC) system that includes both physical and empirical submodels. A pre-cooling coil is added to the HVAC system to help control humidity more efficiently. The hybrid model uses principles of thermodynamics and mass conservation to model different subsystems, while also employing an empirical residential load factor method to account for variations in thermal inertia. The full model is verified using theoretical and numerical methods.
This document provides information on radiant cooling systems and principles from Uponor. It begins with an overview of Uponor's solutions for indoor climate and thermal comfort. It then discusses the principles and benefits of radiant cooling systems, including increased thermal comfort, reduced cooling demand through higher operative temperatures, and more efficient energy transfer compared to air-based systems. The document categorizes and provides examples of Uponor's radiant cooling products and system types for floors, walls, ceilings, and thermally active building systems. It concludes with examples of radiant cooling projects completed worldwide.
The document summarizes the experimental study of a solar air heater. A solar air heater was designed, fabricated and tested under forced convection mode in Allahabad, India. The air heater's performance was evaluated at different air mass flow rates between 0.023-0.046 kg/s. A maximum efficiency of 85% was achieved at the lowest mass flow rate of 0.023 kg/s. Outlet air temperature was highest for the lowest mass flow rate, with a maximum temperature gain of 28% observed. The study found that the fabricated solar air heater was simple to build with locally available materials and was able to effectively heat air for potential applications.
Computational fluid dynamic analysis of solar chimney designIRJET Journal
This document summarizes a computational fluid dynamics (CFD) analysis of an inclined solar chimney design both with and without geothermal mechanisms. The CFD analysis was conducted using ANSYS CFX to investigate typical room temperature, air flow rate, and radiation level for different designs. It was found that the design with geothermal mechanism 3 had the lowest average room temperature around 299K, while the generic design without a geothermal mechanism had the highest average room temperature of around 309.69K. Additionally, the mass flow rate decreased with the inclusion of a geothermal process. The geothermal design 2 extracted the most heat from the room compared to the other designs.
This document summarizes a study on modeling heat and moisture transfer in buildings using the Residential Load Factor (RLF) method. The RLF method is an empirical method that calculates cooling and heating loads based on indoor and outdoor temperatures. It was developed from thousands of residential heat balance simulations. The study develops a building model with four submodels representing: 1) conditioned indoor air space, 2) opaque exterior surfaces, 3) transparent fenestration surfaces, and 4) slab floors. Heat and moisture transfer through these components is modeled using conservation of energy and mass equations that are linearized for analysis. The model uses the RLF method to relate indoor temperature and humidity to outdoor conditions and determine optimal indoor conditions.
Natural ventilation utilizes differences in air pressure, temperature and wind to ventilate buildings without mechanical systems. There are several types of natural ventilation including stack ventilation, wind towers and courtyard effects. Stack ventilation uses temperature differences to draw warm air out of tall rooms or structures. Wind towers cool incoming air through evaporation before distributing it inside. Courtyards create rising warm air that is replaced by cooler air entering at lower levels. Proper building orientation, openings, cross ventilation and tall structures can optimize natural airflow. While it provides free ventilation, natural ventilation has less control over air quality than mechanical systems.
Underfloor heating and cooling uses conduction, radiation, and convection to achieve indoor climate control through thermal comfort. It has a long history dating back thousands of years. Modern systems use either electric heating elements or hydronic piping systems to heat the floor. Hydronic systems circulate heated water through pipes, while electric systems use flexible heating cables or mats. Underfloor heating provides thermal comfort, improves indoor air quality, and can enhance energy efficiency when used in high-performance buildings with renewable energy sources like geothermal or solar thermal.
This document proposes a radiant cooling system for a building project utilizing an underfloor cooling system embedded in screed below flooring and a Thermally Active Building System installed in ceilings. Both systems would connect to earth piles for geothermal energy use. Controls would manage supply temperature according to dew point to prevent condensation. Two reference projects are described that achieved energy class A+ ratings using similar radiant cooling systems coupled with geothermal energy - a 750m2 villa in Greece and the 4500m2 American University of Beirut student center project utilizing seawater cooling.
Building ventilation involves introducing outdoor air into indoor spaces to provide fresh air and remove stale, polluted air. It can occur through natural means using wind and buoyancy, mechanical means using fans and blowers, or a hybrid approach. The key purposes of ventilation are to dilute indoor pollutants, replenish oxygen, regulate temperature, and improve occupant comfort. Effective ventilation considers the rate of outdoor air introduced, overall airflow directions from clean to dirty zones, and efficient air distribution throughout the space.
This topic explains the importance of ventilation in a building. Identification on types of ventilation and air conditioning system, methods of installation of air conditioning system and its components.
Natural ventilation relies on wind and temperature differences to flow fresh air through a building without mechanical systems. It is best suited for open plan layouts and areas with minimal noise pollution. The benefits include energy savings, reduced environmental impact, and robustness. To be effective, natural ventilation must be planned early in the design process with a team approach to meet the client's objectives. Equations are provided to calculate airflow based on factors like opening area, wind velocity, and indoor/outdoor temperature difference. Considerations like inlet/outlet placement and sizing are also discussed.
This document discusses energy efficient ventilation systems. It covers various passive ventilation techniques that can reduce energy consumption compared to mechanical ventilation. These include natural ventilation, cross ventilation, earth air tunnels, and passive cooling and heating methods. The document also reviews literature on ventilation and surveys energy usage for ventilation in homes. The conclusion is that passive ventilation techniques are important for natural ventilation and can significantly reduce energy usage while increasing air circulation, making buildings more eco-friendly.
Lecture 8 heating ventilation & air-conditioningBekark
This document discusses heating, ventilation, and air conditioning (HVAC) systems. It begins by explaining how HVAC principles influence architectural design. It then provides descriptions of common HVAC components and systems, including air handlers, makeup air units, rooftop units, fan coil units, constant air volume systems, and variable air volume systems. The document also discusses heating systems such as fireplaces, stoves, heat pumps, solar heating, and portable units. It covers ventilation methods and factors like indoor air quality. Finally, it addresses HVAC energy efficiency considerations for heating, air conditioning, and thermodynamics.
Example of natural air ventilation using CFD modellingStephane Meteodyn
Urbawind is a CFD software dedicated to quantify the natural air ventilation of buildings.
Such tool is useful to design green buildings where wind is used to improve the indoor thermal comfort with cross ventilation.
Objective is to determine project improvements from indoor thermal comfort and energy saving points of view.
For example, for a site study of natural air ventilation induced by wind in urban places, you can obtain:
– Mapping of wind speed and pressure
– Assess the natural air ventilation thanks to the computation of the air exchange rate
– Optimise the positions of openings according to the micro climatology
go to : http://meteodyn.com/en/logiciels/cfd-wind-pedestrian-comfort-safety-urbawind-software/#modules-tab
Taking a basic office design and making recommendations to reduce energy consumption, lower the carbon footprint and provide passive means of ventilating and cooling the building together with improving natural light while reducing solar gains
This document discusses heating and cooling load calculations for buildings. It covers calculating heating loads by estimating transmission heat losses through walls, infiltration, and ductwork. Cooling load calculations are more complex as they consider time-varying outdoor conditions and internal heat gains. Methods for calculating cooling loads include using the Cooling Load Temperature Difference (CLTD) method for walls and roofs and considering solar heat gain factors for windows. The assumptions behind design cooling loads and calculating people loads are also outlined.
The document discusses different types of windows used in buildings. It describes windows for habitable rooms, kitchens, and toilets with their typical sizes. It discusses controlling windows based on rain, wind speed, and outside temperature. Different types of windows are described like top hung, casement, sliding sash, and fixed lights. Windows serve purposes like natural light, weather exclusion, security, insulation, and privacy. The document also discusses stack ventilation and using clerestory windows to admit daylight.
Earth Air Tunnels utilize the constant underground temperature to provide buildings with air conditioning. The tunnels work best for large buildings by allowing air pumped through to attain the cooler earth temperature. Variables like tunnel length, depth, diameter, and air/earth temperature differences determine effectiveness. Earth Air Tunnels have been successfully used at TERI retreat in Delhi to maintain living quarters between 20-30°C year-round.
Natural ventilation and air movement could-be considered under the heading of 'structural controls’ as it does not rely on any form of energy supply or mechanical installation, but due to its importance for human comfort, it deserves a separate section.
This document discusses ventilation and air movement in buildings. It covers natural ventilation strategies like wind patterns, opening positions and sizes, and stack effect. Cross ventilation and the venturi effect are explained as ways to induce air flow. Maintaining indoor air quality by supplying fresh air and removing pollutants requires careful ventilation design considering factors like wind direction, constrictions to increase speed, and opening placement and size. Various techniques are presented, like wind scoops, jets and tunnels, to study air movement and optimize ventilation performance in buildings.
The document discusses various methods of air movement in buildings, including the effects of wind, turbulence, ventilation needs, and different techniques like cross-ventilation, the venturi effect, stack effect, solar chimneys, fans, and courtyards. Air movement in buildings is caused by wind pressure, the stack effect, and combustion/ventilation, and pairing a large outlet with a small inlet can increase incoming wind speed. Building structures can redirect winds to enable cross-ventilation, while fans, courtyards, and effects like the stack effect and solar chimneys also facilitate air flow. Ventilation is important for removing odors and providing fresh air as well as heating and cooling buildings.
Journal of energy buildings m carlsson_finalAmiran Bokhua
The document discusses a proposed retrofit strategy for high-rise residential buildings involving compartmentalizing apartment units and installing decentralized heat recovery ventilators in each unit. A case study building in Vancouver, Canada underwent an energy model simulation to analyze the impact of this proposed retrofit. The simulation found the proposed retrofit reduced annual space heating energy by 49% and associated greenhouse gas emissions by 70%. When combined with a previous enclosure retrofit, space heating energy was reduced by 78% and greenhouse gas emissions by 83%. The proposed retrofit would also improve indoor air quality through more effective ventilation distribution compared to the existing corridor pressurization system.
This document summarizes an article from the journal Energy and Buildings. The article presents a model of a heating, ventilation and air conditioning (HVAC) system that includes both physical and empirical submodels. A pre-cooling coil is added to the HVAC system to help control humidity more efficiently. The hybrid model uses principles of thermodynamics and mass conservation to model different subsystems, while also employing an empirical residential load factor method to account for variations in thermal inertia. The full model is verified using theoretical and numerical methods.
This document provides information on radiant cooling systems and principles from Uponor. It begins with an overview of Uponor's solutions for indoor climate and thermal comfort. It then discusses the principles and benefits of radiant cooling systems, including increased thermal comfort, reduced cooling demand through higher operative temperatures, and more efficient energy transfer compared to air-based systems. The document categorizes and provides examples of Uponor's radiant cooling products and system types for floors, walls, ceilings, and thermally active building systems. It concludes with examples of radiant cooling projects completed worldwide.
The document summarizes the experimental study of a solar air heater. A solar air heater was designed, fabricated and tested under forced convection mode in Allahabad, India. The air heater's performance was evaluated at different air mass flow rates between 0.023-0.046 kg/s. A maximum efficiency of 85% was achieved at the lowest mass flow rate of 0.023 kg/s. Outlet air temperature was highest for the lowest mass flow rate, with a maximum temperature gain of 28% observed. The study found that the fabricated solar air heater was simple to build with locally available materials and was able to effectively heat air for potential applications.
Computational fluid dynamic analysis of solar chimney designIRJET Journal
This document summarizes a computational fluid dynamics (CFD) analysis of an inclined solar chimney design both with and without geothermal mechanisms. The CFD analysis was conducted using ANSYS CFX to investigate typical room temperature, air flow rate, and radiation level for different designs. It was found that the design with geothermal mechanism 3 had the lowest average room temperature around 299K, while the generic design without a geothermal mechanism had the highest average room temperature of around 309.69K. Additionally, the mass flow rate decreased with the inclusion of a geothermal process. The geothermal design 2 extracted the most heat from the room compared to the other designs.
This document summarizes a study on modeling heat and moisture transfer in buildings using the Residential Load Factor (RLF) method. The RLF method is an empirical method that calculates cooling and heating loads based on indoor and outdoor temperatures. It was developed from thousands of residential heat balance simulations. The study develops a building model with four submodels representing: 1) conditioned indoor air space, 2) opaque exterior surfaces, 3) transparent fenestration surfaces, and 4) slab floors. Heat and moisture transfer through these components is modeled using conservation of energy and mass equations that are linearized for analysis. The model uses the RLF method to relate indoor temperature and humidity to outdoor conditions and determine optimal indoor conditions.
drainage capabilities and heat loss of different inverted roof assembliesAmiran Bokhua
The document summarizes research conducted to evaluate the drainage capabilities and heat loss of different inverted roof assemblies. Tests were performed using a calibrated hot box to simulate winter temperature conditions. Various inverted roof assemblies were tested that included different drainage layer configurations, insulation orientations, and gaps between insulation boards. Test results showed that the majority of rainwater drained at the membrane level regardless of assembly configuration. Introducing gaps between insulation boards increased drainage rates. Assembly configuration was also found to impact the overall effective thermal performance, with increased heat loss observed when the drainage layer was removed and insulation was in direct contact with the roof membrane.
This document discusses the design of an HVAC system for a multiplex building. It begins with an introduction to air conditioning and controlling indoor air properties. It then discusses components of summer, winter, and year-round air conditioning systems. The document provides calculations to determine the cooling load of a sample classroom and design considerations for ductwork. It emphasizes the importance of HVAC system maintenance for health, efficiency, longevity, and reducing emergency repairs.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
The document discusses a study that assessed the performance of window films in reducing solar heat gain in buildings in Kurdistan, Iraq. A test wooden cabinet was constructed and measurements were taken over 9 hours both with and without a window film installed. Results showed that the window film reduced maximum indoor temperatures by 10°C and blocked 50-97% of solar radiation depending on weather conditions. Calculations estimated that applying the window film reduced the solar heat gain of the cabinet by 477.15 Watts, with the largest reduction due to decreased light transmission through the windows. The study demonstrates that window films can effectively support environmental protection by lowering energy use for cooling in hot climates like Kurdistan.
The document compares the thermal performance of Madras terrace roofing and concrete roofing (RCC) in the warm, humid climate of Coimbatore, India. An experiment was conducted on a residence with both roof types over 3 weeks in summer. Outdoor and indoor temperatures and humidity were recorded every 2 hours. Results showed RCC roofing gained more heat than Madras terrace roofing during the day. Peak indoor temperatures under RCC roofing were often 2-3°C higher. Therefore, Madras terrace roofing provided better thermal comfort for occupants in this climate compared to RCC roofing.
Nowadays the concept of Net ZEB is well-known
and widespread in the scientific community. The European
Union has set ambitious targets for 2020 and even more
ambitious for 2050. In order to reduce the domestic GHG
emissions by 80-95%, compared to 1990 levels- till 2050, the
building sector has to do its part and to pass through a deep
restructure. Therefore, it is grown the interest in design and
technical solutions for achieving a zero or nearly zero energy
building. This paper investigate several construction technologies
and system of energy production that can be adopted to build an
“enhanced saving” (parsimonious) building, which can strive for
the objective of NetZEB. Moreover the economic analysis of the
feasibility of the NZEB target has been developed.
This report analyzes installing ceiling fans in three offices of a building in Turkey to reduce cooling loads. It estimates that each fan provides 312W of sensible cooling and 382W of latent cooling per room, reducing the total cooling load by 956W per fan during occupied hours. For the three fans, this is a daily cooling reduction of 31.55kW. The estimated annual energy savings is $1,157, with a payback period of 1.55 years given installation costs of $1,797. While the heat transfer models have inaccuracies, ceiling fans could provide beneficial reduction in cooling loads through increased air movement and occupant comfort at higher temperatures.
International Journal of Computational Engineering Research(IJCER) ijceronline
nternational Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Proper ventilation in one of the primary requirements of any domestic or commercial buildings. The conventional method employs usage of air conditioning or air cooling systems which requires high power consumption. The solar driven ventilation systems can be used in buildings which doesn’t require any external power. The current research reviews various researches conducted in improving system of passive ventilation along use of phase change material as energy storage system. Passive design of buildings does not use the electrical and mechanical systems in providing comfortable indoor environment. Prem Shankar Sahu | Praveen Kumar | Ajay Singh Paikra "Review on Solar Chimney Ventilation" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-4 , June 2021, URL: https://www.ijtsrd.compapers/ijtsrd42427.pdf Paper URL: https://www.ijtsrd.comengineering/mechanical-engineering/42427/review-on-solar-chimney-ventilation/prem-shankar-sahu
The document discusses several methods to reduce operational energy in buildings, including:
1. Using energy efficient building envelopes with high insulation to control air, water, and heat flow. This includes roofs, walls, foundations, and thermal barriers.
2. Considering the solar heat gain coefficient and U-values of facade materials like windows to reduce unwanted solar heat gain and heat loss.
3. Implementing efficient lighting technologies, energy efficient appliances, renewable energy sources, and energy monitoring systems to reduce overall energy usage.
The present work shows the importance of using thermal insulation for new building walls. To decrease cooling and heating load, so the electric power consumption for air-conditioning equipment drop to more than 50% of that without insulation. The experimental work includes building of two models of (1X1X1) m width, length and height located at (32.5 latitude) kut city, Iraq. The model is set to be each wall faced south, east, north and west direction exactly. The models built from brick (24cm), thermo-stone (20cm) and sandwich panel (5cm). Another type of insulation material were tested and compared with normal brick wall is styropor. The heat gain was calculated for all the above insulations compared with brick model. The results showed that the best model in energy saving is the sandwich panel model with about 70% energy save, while the thermo-stone model gives 33% and outside styropor 54.28%.
The document describes the working principles of solar updraft towers, which use solar heating to create an updraft that spins turbines to generate electricity. Solar updraft towers consist of a large glass roof that heats the air below it, creating an updraft that is channeled up a tall, cylindrical tower and drives turbines at the base. The towers can operate 24 hours a day using thermal storage and produce electricity on a large scale. Previous prototypes demonstrated the viability of the technology and further optimization is possible.
Theoretical study of heat transfer through a sun space filled with a porous m...Ahmed Al-Sammarraie
This document presents a theoretical study of heat transfer through a sun space filled with either a porous medium (glass balls) or air. The study developed mathematical models to describe the heat transfer based on energy balances of the glass layer, storage wall surfaces, and wall layer. The models were one-dimensional and assumed constant properties. The results showed that using a porous medium enhanced both the heat transferred to and stored in the storage wall, with increases of 19.7% for outside wall temperature and 20.3% for inside wall temperature, compared to using air.
Solar thermal walls (Trombe ,water and trans walls)srikanth reddy
Thermal storage walls like Trombe walls, water walls, and trans walls can passively heat buildings using solar energy. Trombe walls consist of a south-facing glass wall separated from a thick concrete wall by an air gap. During the day, solar radiation passes through the glass and heats the concrete wall. This stored heat is then radiated into the building. Trans walls use a semi-transparent absorber sandwiched between two water columns for rapid heat transfer and direct gain, while reducing heat loss. Different wall designs provide heating benefits like load leveling or daytime heating, depending on the application. Components like wall thickness, vent size, and overhangs influence heat transfer and storage. Advancements
This document summarizes the design, fabrication, and performance study of a solar air collector for room heating in Bangladesh. The collector was designed to be 1.23 square meters in size and heat a 1.365 cubic meter room. Data on inlet and outlet air temperatures were collected to calculate heat gain and collector efficiency. The maximum collector efficiency reached 32.79% when the inlet temperature was 35°C and outlet was 45°C. Graphs show efficiency and temperature differences over time on three days, with the maximum temperature difference reaching 10°C at 1:30PM and efficiency peaking then as well. The solar air collector provided effective room heating for 8 hours per day.
Cfd simulation of telecommunications cabinetmahdi Mokrane
This document discusses simulations of cooling a telecommunications cabinet prototype using computational fluid dynamics (CFD). It presents the following key points:
1) A CFD model was created using GAMBIT meshing software to simulate air flow and heat transfer within a telecommunications cabinet measuring 0.65x0.65x0.30 m containing a heating element.
2) Simulations were run with and without ventilation openings, showing ventilation is needed to maintain safe temperature levels inside the closed cabinet.
3) Forced convection cooling via an air inlet and outlets was able to maintain air temperatures of 309-311K, an improvement of 8-10K over the natural convection scenario without openings.
A REVIEW ON ENERGY EFFICIENT BUILDINGS - USING PHASE CHANGE MATERIALS, GREEN ...IRJET Journal
This document reviews the use of various strategies to create more energy efficient buildings, including phase change materials (PCMs), green roofs, and heat reflective coatings. It summarizes several studies that have found incorporating PCMs into building materials like walls and roofs can significantly reduce temperature fluctuations and energy consumption for heating and cooling by absorbing and releasing thermal energy during phase changes. Green roofs are also highlighted as providing thermal benefits by keeping roof and indoor temperatures lower compared to bare roofs. Coatings that reflect infrared and sunlight are discussed as another method to decrease energy usage. The document then examines two specific studies in more depth, one analyzing the effects of different PCM variants installed in walls and roofs in Kuwait
This document discusses advancements in solar thermal walls, including zigzag Trombe walls, fluidized Trombe walls, Trombe walls with phase-change materials, composite Trombe walls, and photovoltaic Trombe walls. Zigzag Trombe walls reduce heat gain and glare using an inward V-shape. Fluidized Trombe walls improve heat transfer through a fluidized bed. Trombe walls with phase-change materials store more latent heat in a smaller space. Composite Trombe walls control heating rates and provide high insulation. Photovoltaic Trombe walls increase electrical efficiency by removing heat from photovoltaic panels.
Similar to A Pitched Roof with Forced Ventilation to Limit Solar Gains_Crimson Publishers (20)
1) The document analyzes the efficiency of freight electric locomotives in different operating modes. It found that efficiency is much lower when locomotives operate at partial load, such as pulling empty trains.
2) It developed a Discrete-Adaptive Control system to increase efficiency by regulating the number of traction motors used based on tractive power needs. Computer simulations showed this approach could reduce energy consumption by 13%.
3) The control system aims to maximize locomotive efficiency by distributing tractive effort to an optimal quantity of traction motors and switching off redundant motors. When additional power is needed, more motors are used.
Good daylighting and shading design in urban outdoors not only provides a comfortable luminous environment, but also delivers energy savings and
comfortable environments for surroundings, particularly in the hot arid climate. Yet, it can lead to a reduction in the daylight availability leading to visual
discomfort. According to the Illuminating Engineering Society of North America (IESNA, 2000, 2011), it is essential that daylight effects be considered in
any space where daylight is admitted, even if it is not exploited as a light source, in order to reduce the need for artificial lighting. Therefore, an analysis
of solar access and shading is necessary for to assure visual comfort underneath the shading tents. This paper attempts to investigate seven different
shading scenarios addressing the solar radiation access underneath, in compliance with ANSI/ASHRAE/IESNA Standard 90.1-2007 recommendations,
by employing DIVA, which is an integration of Radiance and DAYSIM with thermal load simulation using Energy Plus within [1].
Magnesium carbonate trihydrate, nesquehonite, is proposed as a precursor for the production of a construction material similar to plasterboard,
in a unique carbon capture and utilisation process [1]. The hardening process is thought to follow a similar mechanism to gypsum in the manufacture
of plasterboard, where the hardening is produced in the recrystallization of gypsum crystals. However, nesquehonite [2], during hardening,
converts into hydromagnesite, releasing CO2
and H2
O during the transformation. In this work, samples of nesquehonite were hardened by forcing
their conversion into hydromagnesite in enclosed cubes [3]. The influence of the curing temperature (50 ℃-80 ℃) and time (0-72 hours) on the
compressive strength has been studied and correlated to the conversion of nesquehonite into hydromagnesite [4]. Compressive strength values up
to 6MPa are easily achievable in the studied conditions and it was observed that at higher temperatures time has a detrimental effect on the strength.
The probable overpressure within the cubes, generated by released CO2
and water at the higher temperatures, is thought to be the main cause for
the loss of strength [5].
Road rage is a deeply rooted social problem and has become a
common phenomenon among road users. Over 85% of New South
Wales (NSW) drivers interviewed reported of being a victim of various forms of road rage while this figure is even higher in Brisbane
with 95% [1]. Nine out of ten US drivers believe aggressive drivers
pose a threat to their personal safety while 78% of the drivers report of engaging in aggressive driving at least once in 2014 AAAFTS
[2]. The fact that road rage and aggressive driving is rated above
drink driving as the biggest safety concern reveals the seriousness
of the issue. Road rage can be defined as any hostile act conducted
by a road user towards another road user on the roadway, including
parking lots. These acts involve extreme forms of aggression like
physically assaulting road users (both driver/passenger), vehicles
or both. Road rage has become an easy medium to express anger,
frustration, and the annoyance of everyday conflicts and disagreements on situations arising both on and off the roadway due to
power, ease of escape, anonymity, and protection associated with
vehicles.
Urban transport exchange hubs play a key role as an integral part of the transport networks by facilitating relations between public transport modes but also have a function in the city urban planning and in-service facilities [1]. Time savings, urban integration, better use of waiting times and improved operating models are some of the expected benefits of developing efficient city-hubs [2,3]. However, although interchanges are crucial for improving accessibility, there are still problems remaining such as seams or bottlenecks, which are mainly reported in the coordination between the different transport modes and the use of the information systems and management model. In order to examine a part of these problems, the three years (September 2012-February 2015) City-HUB consortium of nine European research institutes from nine countries belonging to the European conference of transport research institutes (ECTRI) project studied 27 multimodal interchanges [4].
Precipitation, evaporation and runoff patterns are changing, resulting in uncertainty about the security of water supply, the quality of drinking
water, flood management in urban environments and the long-term health of natural ecosystems. The particular aspects for China are described
where, with increasing urbanization, flooding has become a regular occurrence in response, China is developing “sponge cities” to attain resilience to
stormwater. This paper describes a novel technology with significant potential; the principle of the ‘double pipe technology’ which involves placement
of a perforated pipe below a stormwater pipe, encourages passage from the stormwater pipe down to a second pipe, a perforated pipe. This allows
temporary storage in the lower pipe and enhances exfiltration from the lower pipe to the underlying aquifer. A conceptual model of the double pipe
technology is provided, and the results show that the surcharge potential in the stormwater pipe is dramatically decreased. The lower pipe is able to
capture, store, and eventually infiltrate into the groundwater, storm water runoff where the exfiltrate water from the lower pipe 56% to 62% of the
total annual rainfall to be released to groundwater. This would truly enhance groundwater levels and decrease subsidence in areas where this is a major
concern (particularly related to coastal zone cities in China).
Feasibility Study on Small Scale Food Production Using Off-Grid Photovoltaic Water Pumping System in Coastal Dune by Kotaro Tagawa in Advancements in Civil Engineering & Technology
The Axes of Resilience: The Case of the Earthquakes of September 7 and 19, 2017 in Mexico by Joel F Audefroy* in Advancements in Civil Engineering & Technology
Sustainable New Towns and Transportation Planning; Reflection of A Case Study by Abdol Aziz Shahraki* in Advancements in Civil Engineering & Technology
Recovery Period of Fluvial Sediment Transport after a Major Earthquake by Guan-Wei Lin* and Hsien-Li Kuo in Advancements in Civil Engineering & Technology
Experimental Calculation of the Damping Ratio In Buildings Hosting Permanent GPS Stations During the Recent Italian Earthquakes by Marco Gatti* in Open Journal of Civil Engineering
The Influence of Concrete Roads on Safety and Energy Saving in Tunnels by Stefan Krispel, Gerald Maier* and Martin Peyerl in Advancements in Civil Engineering & Technology
The Effects of Engineering Education and Government Policy in Driving Innovation among Engineering Graduates in Nigeria by Olawale Oshokoya* in Advancements in Civil Engineering & Technology
Inter Terminal Transport in Port Areas around
the Globe by Qu Hu, Francesco, Corman and Bart Wiegmans* in Advancements in Civil Engineering & Technology
Stabilising Earth Brick with Palm Kernel Oil Residue for Construction of Low Cost Housing by Yalley PP* and Badu E in Advancements in Civil Engineering & Technology
This document compares the LEED and Estidama/Pearl rating systems for sustainable building in the United Arab Emirates. It finds that while LEED is more flexible, the Pearl rating system more closely involves assessors and ensures projects meet sustainability goals through design, construction, and post-occupancy certification. The Pearl system also has higher standards, requiring things like water budgeting and energy analysis not mandated in LEED. It concludes the Pearl rating system better serves sustainability in UAE's construction industry and environment.
More from Advancements in Civil Engineering & Technology (ACET) (20)
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
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.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
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.
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.
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.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
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