Design and Fabrication of Desiccant Wheel Dehumidifier
... to bring a large volume of water in contact with moving air to allow evaporation to occur. A typical design, as shown in a 1945 patent, includes a water reservoir (usually with level controlled by a float valve), a pump to circulate water over the excelsior pads and a squirrel-cage fan to draw air t ...
... to bring a large volume of water in contact with moving air to allow evaporation to occur. A typical design, as shown in a 1945 patent, includes a water reservoir (usually with level controlled by a float valve), a pump to circulate water over the excelsior pads and a squirrel-cage fan to draw air t ...
Introduction
... Read Chapter 23 through. You may be somewhat acquainted with the first half or so of this chapter because the material is covered in CE212. The equation development of particular importance to us is on Pages 757 through 760. It is built around Figure 23-8(a). Thus, there is a temperature gradient in ...
... Read Chapter 23 through. You may be somewhat acquainted with the first half or so of this chapter because the material is covered in CE212. The equation development of particular importance to us is on Pages 757 through 760. It is built around Figure 23-8(a). Thus, there is a temperature gradient in ...
Aalborg Universitet Heiselberg, Per Kvols
... be fan-assisted or not. Regardless of the means of ventilation, occupants must not feel uncomfortable in the indoor environment. In Montreal, Canada, the outdoor air temperature is expected to show a diurnal temperature difference of at least 10 °C during the months of April to October [3]. These mo ...
... be fan-assisted or not. Regardless of the means of ventilation, occupants must not feel uncomfortable in the indoor environment. In Montreal, Canada, the outdoor air temperature is expected to show a diurnal temperature difference of at least 10 °C during the months of April to October [3]. These mo ...
MECHANICAL AND ELECTRICAL EQUIPMENTS
... quantity of makeup air. These simple devices often supplement the building’s main heating/cooling system, which deals primarily with heat gains/losses through the building skin. Even in hot, humid climates, indirect evaporative cooling can help lower the temperature of makeup air. ...
... quantity of makeup air. These simple devices often supplement the building’s main heating/cooling system, which deals primarily with heat gains/losses through the building skin. Even in hot, humid climates, indirect evaporative cooling can help lower the temperature of makeup air. ...
vii. bringing air to saturation
... a. As we ascend, there is less force pushing down, not only on us, but also on the bubbles. b. So the temperature at which saturation vapor pressure in the bubbles is able to stave off this external pressure pushing down is relatively lower. So therefore, this is why some food never cooks at higher ...
... a. As we ascend, there is less force pushing down, not only on us, but also on the bubbles. b. So the temperature at which saturation vapor pressure in the bubbles is able to stave off this external pressure pushing down is relatively lower. So therefore, this is why some food never cooks at higher ...
Optimum cooling solutions for power electronics, Robert Skuriat
... A very compact cooler producing a high heat transfer coefficient may require a large pump with filter and complex control system in order to operate, increased complexity e.g. spray cooling A cooler may produce a very high heat transfer coefficient at the expense of producing a high pressure drop or ...
... A very compact cooler producing a high heat transfer coefficient may require a large pump with filter and complex control system in order to operate, increased complexity e.g. spray cooling A cooler may produce a very high heat transfer coefficient at the expense of producing a high pressure drop or ...
Thermoregulation - Weber State University
... – Heat transferred as water is vaporized from respiratory passages and skin surfaces. – For each liter of water vaporized, 580 kcal transferred to the environment. – When sweat comes in contact with the skin, a cooling effect occurs as sweat evaporates. – The cooled skin serves to cool the blood. ...
... – Heat transferred as water is vaporized from respiratory passages and skin surfaces. – For each liter of water vaporized, 580 kcal transferred to the environment. – When sweat comes in contact with the skin, a cooling effect occurs as sweat evaporates. – The cooled skin serves to cool the blood. ...
Dry Cooling Technology in Chinese Thermal Power Plants
... air wet bulb temperature. This cooling system is more efficient, relatively cost effective to install and easy to operate. They are, however, becoming less attractive since they consume large amounts of water through evaporation and high blowdown rates. Dry cooling towers, on the other hand, cools t ...
... air wet bulb temperature. This cooling system is more efficient, relatively cost effective to install and easy to operate. They are, however, becoming less attractive since they consume large amounts of water through evaporation and high blowdown rates. Dry cooling towers, on the other hand, cools t ...
HEAT GAIN CALCULATIONS
... simply BTUs in the case of US units. • The same method is used (except you don't need to divide by 1000) for US units with the result being in BTUs rather than in kWh ...
... simply BTUs in the case of US units. • The same method is used (except you don't need to divide by 1000) for US units with the result being in BTUs rather than in kWh ...
June 2013
... speed is important as well. The the relative humidity tends to be at these times. The higher most efficient system can drop temperatures 20 degrees.” the temperature and the lower the relative humidity, the Freking says it is also important to monitor dewpoint because more need for cooling and the m ...
... speed is important as well. The the relative humidity tends to be at these times. The higher most efficient system can drop temperatures 20 degrees.” the temperature and the lower the relative humidity, the Freking says it is also important to monitor dewpoint because more need for cooling and the m ...
Passive House Standard Video Tutorial
... environmental conditions with minimal space heating or cooling demand. Passive House projects provide very high level of thermal comfort with whole-building even temperatures. The concept is based on minimising heat losses and maximising free-heat gains, thus enabling the use of simple (small) build ...
... environmental conditions with minimal space heating or cooling demand. Passive House projects provide very high level of thermal comfort with whole-building even temperatures. The concept is based on minimising heat losses and maximising free-heat gains, thus enabling the use of simple (small) build ...
numerical simulation of heat loaded aircraft engine turbine blade
... complexity of the design. This allows for better understanding processes that are taking place. Designing the internal cooling systems is very problematic mainly due to complex internal geometry and material properties, which are not available for general public. Accuracy and quality of obtained res ...
... complexity of the design. This allows for better understanding processes that are taking place. Designing the internal cooling systems is very problematic mainly due to complex internal geometry and material properties, which are not available for general public. Accuracy and quality of obtained res ...
contents - UET Mechanical 09
... heat without exhibiting any increase in temperature. A heat sink temperature rise of 5 to 15°C above ambient (or cooling fluid) is typical for many thermoelectric applications. Heat sink performance:- Qs= (Ts-Ta)/Q ...
... heat without exhibiting any increase in temperature. A heat sink temperature rise of 5 to 15°C above ambient (or cooling fluid) is typical for many thermoelectric applications. Heat sink performance:- Qs= (Ts-Ta)/Q ...
The Importance of Internal Heat Gains for Building Cooling Design
... situated on the west cost of Turkey (latitude 38°25 N, longitude 27°08 E), has a typical Mediterranean climate which is characterized as temperate-humid. The minimum average temperatures during winter vary between 6 and 8 °C. Monthly mean temperatures, however, during summer (May–October) are almost ...
... situated on the west cost of Turkey (latitude 38°25 N, longitude 27°08 E), has a typical Mediterranean climate which is characterized as temperate-humid. The minimum average temperatures during winter vary between 6 and 8 °C. Monthly mean temperatures, however, during summer (May–October) are almost ...
Simulation of intermittent transient cooling load characteristic in an academic
... radiation from internal heat sources will be trapped inside the zone. On the other hand, it will reduce heat gain from artificial lighting during daytime and release the heat buildup during daytime easily during nighttime [7,8,9,]. These results indicate that there is a trade-off between thermal com ...
... radiation from internal heat sources will be trapped inside the zone. On the other hand, it will reduce heat gain from artificial lighting during daytime and release the heat buildup during daytime easily during nighttime [7,8,9,]. These results indicate that there is a trade-off between thermal com ...
Chapter_03_Thermal_comfort_and_Heat_stess.pdf
... All terms in Eq. (3-38) have dimensions of energy per unit time, i.e. power. Each of these heat transfer terms is considered separately below. Conduction: Conduction heat transfer is by direct contact with solid surfaces, such as chairs, the floor, etc. Since the surface area in such contact is smal ...
... All terms in Eq. (3-38) have dimensions of energy per unit time, i.e. power. Each of these heat transfer terms is considered separately below. Conduction: Conduction heat transfer is by direct contact with solid surfaces, such as chairs, the floor, etc. Since the surface area in such contact is smal ...
MLHW_Baselining_meeting04
... N. Catalan: reports on some considerations about the possibility to build longer AS. She starts by summarizing the present fabrication procedure, she points out that the expected accuracy of machining is achieved, structures with a diameter size of 20 to 30 cm can be built, then the availability of ...
... N. Catalan: reports on some considerations about the possibility to build longer AS. She starts by summarizing the present fabrication procedure, she points out that the expected accuracy of machining is achieved, structures with a diameter size of 20 to 30 cm can be built, then the availability of ...
How Cooling Towers Function
... Because a secondary cooling system and heat exchanger(s) are needed to cool the closed system. higher capital and operating costs are disadvantages of this design. The fresh makeup to closed systems usually needs to be sodium zeolite softened or demineralized. Open Recirculating Cooling Towers As re ...
... Because a secondary cooling system and heat exchanger(s) are needed to cool the closed system. higher capital and operating costs are disadvantages of this design. The fresh makeup to closed systems usually needs to be sodium zeolite softened or demineralized. Open Recirculating Cooling Towers As re ...
ARCTIC Chills Turbine Power Loss
... counterparts. The wet surface air cooler (WSAC) was selected for the demonstration plant because of superior performance, but it does required 40 gpm of makeup water at design conditions. (For more information on WSACs, see “Wet Surface Air Coolers Minimize Water Use by Maximizing Heat Transfer Effi ...
... counterparts. The wet surface air cooler (WSAC) was selected for the demonstration plant because of superior performance, but it does required 40 gpm of makeup water at design conditions. (For more information on WSACs, see “Wet Surface Air Coolers Minimize Water Use by Maximizing Heat Transfer Effi ...
Energy efficiency in architecture
... However, in extreme climatic conditions, one cannot achieve comfortable indoor conditions by these design considerations only. There are certain tested and established concepts which, if applied to a design in such climatic conditions, are able to largely satisfy the thermal comfort criteria. These ...
... However, in extreme climatic conditions, one cannot achieve comfortable indoor conditions by these design considerations only. There are certain tested and established concepts which, if applied to a design in such climatic conditions, are able to largely satisfy the thermal comfort criteria. These ...
6.5 Heating and Cooling Systems
... As the refrigerant cools, it changes into a liquid. The liquid refrigerant then passes through an expansion valve, moving from a high-pressure area to a low-pressure area. At this point, the liquid refrigerant absorbs thermal energy from the surrounding air and evaporates back into a gas. The surrou ...
... As the refrigerant cools, it changes into a liquid. The liquid refrigerant then passes through an expansion valve, moving from a high-pressure area to a low-pressure area. At this point, the liquid refrigerant absorbs thermal energy from the surrounding air and evaporates back into a gas. The surrou ...
Thermoelectric Cooling A Closer Look.indd
... For these reasons, it is best to have a cooling component in place as part of your system. Before going into a detailed look at thermoelectric cooling, a few other technologies are briefly outlined below. Vapor-cycle air conditioners have their place but are a maintenance challenge when placed in ha ...
... For these reasons, it is best to have a cooling component in place as part of your system. Before going into a detailed look at thermoelectric cooling, a few other technologies are briefly outlined below. Vapor-cycle air conditioners have their place but are a maintenance challenge when placed in ha ...
Radiant Cooling: Thermally Active Floors
... temperature of 76°F (24°C), the maximum cooling capacity of a floor can be less than 10 Btu/ft2·h (31 W/m2·h). European comfort standards allow a maximum air temperature of 79°F (26°C), giving a minimum floor capacity of 13.5 Btu/ft2·h (42 W/m2·h).4 On the other hand, with 40 Btu/ft2·h (126 W/m2·h) ...
... temperature of 76°F (24°C), the maximum cooling capacity of a floor can be less than 10 Btu/ft2·h (31 W/m2·h). European comfort standards allow a maximum air temperature of 79°F (26°C), giving a minimum floor capacity of 13.5 Btu/ft2·h (42 W/m2·h).4 On the other hand, with 40 Btu/ft2·h (126 W/m2·h) ...
Evaporative cooler
Evaporative cooler temperature|dry-bulb]] temperature and wet-bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still take advantage of the evaporative cooling process without increasing humidity. Passive evaporative cooling strategies offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.