HIGH PERFORMANCE COMMMERCIAL BUILDINGS
... External shading devices should be designed according to the orientation of façade. For instance on North orientation minimum or no shading is required. On South orientation external shades should be designed after studying the sun path. Shading devices on South orientation could be permanent in na ...
... External shading devices should be designed according to the orientation of façade. For instance on North orientation minimum or no shading is required. On South orientation external shades should be designed after studying the sun path. Shading devices on South orientation could be permanent in na ...
Full-Text PDF
... Basically they are substances capable of storing or releasing energy as latent heat. Because the amount of latent heat absorbed or released is much larger than the sensible heat, the application of PCMs in buildings has significant potential to reduce energy consumption [1]. However, because each PC ...
... Basically they are substances capable of storing or releasing energy as latent heat. Because the amount of latent heat absorbed or released is much larger than the sensible heat, the application of PCMs in buildings has significant potential to reduce energy consumption [1]. However, because each PC ...
11 Infrared heating
... The basic characteristics of infrared radiation are the high heat transfer capacity, heat penetration directly into the product, fast regulation response and good possibilities for process control. These qualities indicate that infrared radiation should be an ideal source of energy for heating purpo ...
... The basic characteristics of infrared radiation are the high heat transfer capacity, heat penetration directly into the product, fast regulation response and good possibilities for process control. These qualities indicate that infrared radiation should be an ideal source of energy for heating purpo ...
here - BYU Department of Mechanical Engineering
... equivalent to the two-tank plant. However, this similarity was contingent on sliding-pressure operation in the power block, which is necessary to accommodate molten salt exiting the thermocline tank below the hot temperature limit. Comparison of the various thermocline tank simulations in the litera ...
... equivalent to the two-tank plant. However, this similarity was contingent on sliding-pressure operation in the power block, which is necessary to accommodate molten salt exiting the thermocline tank below the hot temperature limit. Comparison of the various thermocline tank simulations in the litera ...
Lowering Water Temperature in Hydronic Heating
... This requirement is often overlooked when selecting a boiler, and it is simply “expected” to achieve perhaps 95 percent efficiency, regardless of the distribution system to which it is connected. Low water temperature distribution systems are also necessary for an air-to-water heat pump to achieve g ...
... This requirement is often overlooked when selecting a boiler, and it is simply “expected” to achieve perhaps 95 percent efficiency, regardless of the distribution system to which it is connected. Low water temperature distribution systems are also necessary for an air-to-water heat pump to achieve g ...
Mantle Lithosphere Heat Flow Page 1 of 43 In
... found to produce reproducible results under a variety of different confining pressures and stack configurations. As many of the experimental runs above 500oC resulted in fractured standards in the stack, we are only confident in the results from these runs as semi-quantitative. However, within indiv ...
... found to produce reproducible results under a variety of different confining pressures and stack configurations. As many of the experimental runs above 500oC resulted in fractured standards in the stack, we are only confident in the results from these runs as semi-quantitative. However, within indiv ...
Parabolic Trough Technology
... Until today these plants still continue in operation. The constructional and operational experience with these plants pushed the parabolic trough technology a considerable step forward and provided the basics for further technologic developments and project planning. A further expansion of the insta ...
... Until today these plants still continue in operation. The constructional and operational experience with these plants pushed the parabolic trough technology a considerable step forward and provided the basics for further technologic developments and project planning. A further expansion of the insta ...
Influence of natural convection in a porous medium when producing
... BHE is producing heat, the borehole is filled with fluid having a temperature that is lower than the surrounding porous medium. The cooler borehole triggers convection currents in the subsurface as a horizontal temperature gradient always causes fluid motion [Vadasz et al., 1993]. A problem similar to ...
... BHE is producing heat, the borehole is filled with fluid having a temperature that is lower than the surrounding porous medium. The cooler borehole triggers convection currents in the subsurface as a horizontal temperature gradient always causes fluid motion [Vadasz et al., 1993]. A problem similar to ...
UCON™ Heat Transfer Fluid 50-HB-260-Y3
... UCON™ Heat Transfer Fluid 50-HB-260-Y3 has low volatility (does not evaporate easily). Because it is water soluble at room temperature, this product will tend to remain in water with minimal tendency to bind to soil, sediment, or suspended solids. UCON Heat Transfer Fluid 50-HB-260-Y3 is unlikely to ...
... UCON™ Heat Transfer Fluid 50-HB-260-Y3 has low volatility (does not evaporate easily). Because it is water soluble at room temperature, this product will tend to remain in water with minimal tendency to bind to soil, sediment, or suspended solids. UCON Heat Transfer Fluid 50-HB-260-Y3 is unlikely to ...
Analytical solutions of the steady or unsteady heat conduction
... due to its ubiquity. Today the energy efficiency requirements are becoming more and more demanding. This motivates engineers to continuously improve the efficiency of heat transfer processes. For such analysis nowadays, the common and the popular practice to infer the temperature field is now commer ...
... due to its ubiquity. Today the energy efficiency requirements are becoming more and more demanding. This motivates engineers to continuously improve the efficiency of heat transfer processes. For such analysis nowadays, the common and the popular practice to infer the temperature field is now commer ...
energyplus: new capabilities in a whole-building energy
... under support from the US government was released in April 2001. EnergyPlus is based on the most popular features and capabilities of BLAST and DOE-2 but is a completely new program written in Fortran 90. New features include variable time steps, user-configurable modular systems, an integrated heat ...
... under support from the US government was released in April 2001. EnergyPlus is based on the most popular features and capabilities of BLAST and DOE-2 but is a completely new program written in Fortran 90. New features include variable time steps, user-configurable modular systems, an integrated heat ...
HIGH PERFORMANCE COMMMERCIAL BUILDINGS
... laboratory-IDPO, Hyd showing proper use of should vary from one climate to another. Since these solar passive design features (source: buildings can also function independent of mechanical Mindpspace architects) systems, in case of power failure they are still well lit by natural daylight and therma ...
... laboratory-IDPO, Hyd showing proper use of should vary from one climate to another. Since these solar passive design features (source: buildings can also function independent of mechanical Mindpspace architects) systems, in case of power failure they are still well lit by natural daylight and therma ...
Seasonal thermal energy storage with heat pumps and low
... fossil fuels together with environmental aspects, renewable energies could be an important alternative solution as energy sources. There are several renewable technologies available in the market that refine renewable energies, e.g. biofuels, wind turbine, photovoltaic (PV), solar thermal collector, ...
... fossil fuels together with environmental aspects, renewable energies could be an important alternative solution as energy sources. There are several renewable technologies available in the market that refine renewable energies, e.g. biofuels, wind turbine, photovoltaic (PV), solar thermal collector, ...
Presentation
... 38) An ideal monoatomic gas is compressed (No heat being added or removed in the process) so that its volume is halved. The ratio of the new pressure to the original pressure is ...
... 38) An ideal monoatomic gas is compressed (No heat being added or removed in the process) so that its volume is halved. The ratio of the new pressure to the original pressure is ...
Full-Text PDF
... modules and the ideal thickness of heat distribution plates that gave the maximum generation per unit area. It has become clear that as the conversion efficiency of TEG material has increased so has the attention being paid to studies and applications involving combinations of TEG modules and waste ...
... modules and the ideal thickness of heat distribution plates that gave the maximum generation per unit area. It has become clear that as the conversion efficiency of TEG material has increased so has the attention being paid to studies and applications involving combinations of TEG modules and waste ...
Solar Passive design: SOLAR PASSIVE DESIGN FEATURES FOR HOT & DRY CLIMATE
... Proper landscaping reduced direct sun from striking and heating up building surfaces. It is the best way to provide a buffer for heat, sun, noise, traffic, and airflow or for diverting airflow or exchanging heat in a solar-passive design. It prevents reflected light carrying heat into a building fro ...
... Proper landscaping reduced direct sun from striking and heating up building surfaces. It is the best way to provide a buffer for heat, sun, noise, traffic, and airflow or for diverting airflow or exchanging heat in a solar-passive design. It prevents reflected light carrying heat into a building fro ...
Natural Convection and Entropy Generation in Nanofluid Filled
... numerical model can reproduce the essential features of the process. The magnetic field effect on convective heat transfer were studied extensively recently since it may found imporatnst applciation areas such as coolers of nuclear reactors, purification of molten metals, MEMs and many others [12,13 ...
... numerical model can reproduce the essential features of the process. The magnetic field effect on convective heat transfer were studied extensively recently since it may found imporatnst applciation areas such as coolers of nuclear reactors, purification of molten metals, MEMs and many others [12,13 ...
The Greenhouse Effect - mc
... Additional temperature moderation is provided by the water cycle ... provided the temperature is appropriate for solid-liquid-gas phase changes. (In other words, this would not work if it was too hot [all gas] or too cold [all ice]). Deserts tend to get much hotter and much colder than other areas w ...
... Additional temperature moderation is provided by the water cycle ... provided the temperature is appropriate for solid-liquid-gas phase changes. (In other words, this would not work if it was too hot [all gas] or too cold [all ice]). Deserts tend to get much hotter and much colder than other areas w ...
Recent advances in thermoregulation (Review)
... regulation of core temperature humans can survive in the most inhospitable of places and can challenge their thermoregulatory capacity in the most extreme ways. Humans participate in the Marathon Des Sables (a 251 km endurance running challenge in the Sahara desert, a place where day time temperatur ...
... regulation of core temperature humans can survive in the most inhospitable of places and can challenge their thermoregulatory capacity in the most extreme ways. Humans participate in the Marathon Des Sables (a 251 km endurance running challenge in the Sahara desert, a place where day time temperatur ...
Chapter 5 Thermochemistry
... When 4.00 g of methylhydrazine is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00°C to 39.50°C. In a separate experiment the heat capacity of the calorimeter is measured to be 7.794 kJ/°C. What is the heat of reaction for the combustion of a mole of CH6N2 in ...
... When 4.00 g of methylhydrazine is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25.00°C to 39.50°C. In a separate experiment the heat capacity of the calorimeter is measured to be 7.794 kJ/°C. What is the heat of reaction for the combustion of a mole of CH6N2 in ...
Cogeneration
Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Trigeneration or combined cooling, heat and power (CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector. Cogeneration is a thermodynamically efficient use of fuel. In separate production of electricity, some energy must be discarded as waste heat, but in cogeneration this thermal energy is put to use. All thermal power plants emit heat during electricity generation, which can be released into the natural environment through cooling towers, flue gas, or by other means. In contrast, CHP captures some or all of the by-product for heating, either very close to the plant, or—especially in Scandinavia and Eastern Europe—as hot water for district heating with temperatures ranging from approximately 80 to 130 °C. This is also called combined heat and power district heating (CHPDH). Small CHP plants are an example of decentralized energy. By-product heat at moderate temperatures (100–180 °C, 212–356 °F) can also be used in absorption refrigerators for cooling.The supply of high-temperature heat first drives a gas or steam turbine-powered generator and the resulting low-temperature waste heat is then used for water or space heating as described in cogeneration. At smaller scales (typically below 1 MW) a gas engine or diesel engine may be used. Trigeneration differs from cogeneration in that the waste heat is used for both heating and cooling, typically in an absorption refrigerator. CCHP systems can attain higher overall efficiencies than cogeneration or traditional power plants. In the United States, the application of trigeneration in buildings is called building cooling, heating and power (BCHP). Heating and cooling output may operate concurrently or alternately depending on need and system construction.Cogeneration was practiced in some of the earliest installations of electrical generation. Before central stations distributed power, industries generating their own power used exhaust steam for process heating. Large office and apartment buildings, hotels and stores commonly generated their own power and used waste steam for building heat. Due to the high cost of early purchased power, these CHP operations continued for many years after utility electricity became available.