Design and Fabrication of Desiccant Wheel Dehumidifier
... 1) A thermal wheel consists of a circular honeycomb matrix of heat-absorbing material, which is slowly rotated within the supply and exhaust air streams of an air handling system. As the thermal wheel rotates heat is picked up from the exhaust air stream in one half of the rotation, and given up to ...
... 1) A thermal wheel consists of a circular honeycomb matrix of heat-absorbing material, which is slowly rotated within the supply and exhaust air streams of an air handling system. As the thermal wheel rotates heat is picked up from the exhaust air stream in one half of the rotation, and given up to ...
File
... For a process in a simple calorimeter, the system is the chemical reaction, and the surroundings are the water and the calorimeter, so: qreaction = - (qcalorimeter+ qH2O) ...
... For a process in a simple calorimeter, the system is the chemical reaction, and the surroundings are the water and the calorimeter, so: qreaction = - (qcalorimeter+ qH2O) ...
The Application of Thermal Imaging as a Nondestructive Test in
... Building structures commonly exhibit quality and performance problems caused during construction and maintenance that can impact energy performance and, in some cases, render them dangerous. Regardless of the building type involved, infrared imaging has been shown to provide details in building perf ...
... Building structures commonly exhibit quality and performance problems caused during construction and maintenance that can impact energy performance and, in some cases, render them dangerous. Regardless of the building type involved, infrared imaging has been shown to provide details in building perf ...
Computational fluid dynamics modelling of the air movement in an
... more accurate the predictions are, it is extremely difficult to create a mesh for complex geometry such as that of the ‘human being’. Such a domain would also increase the computational time. Therefore, as suggested by Deevy et al (2008) and Topp et al (2002), it is sufficient to approximate the sha ...
... more accurate the predictions are, it is extremely difficult to create a mesh for complex geometry such as that of the ‘human being’. Such a domain would also increase the computational time. Therefore, as suggested by Deevy et al (2008) and Topp et al (2002), it is sufficient to approximate the sha ...
1 Foundations of Pyrodynamics - Wiley-VCH
... where cv is the specific heat at constant volume and cp is the specific heat at constant pressure. Both specific heats represent conversion parameters between energy and temperature. Using Eqs. (1.3) and (1.5), one obtains the relationship cp − cv = Rg ...
... where cv is the specific heat at constant volume and cp is the specific heat at constant pressure. Both specific heats represent conversion parameters between energy and temperature. Using Eqs. (1.3) and (1.5), one obtains the relationship cp − cv = Rg ...
C060
... and bottom surface of the system (h=20 W/m2 °C), and then with no convection applied (h=0 W/m2 °C). Figure 6 shows the comparison of results obtained from the two simulations. ...
... and bottom surface of the system (h=20 W/m2 °C), and then with no convection applied (h=0 W/m2 °C). Figure 6 shows the comparison of results obtained from the two simulations. ...
C044
... 1984) showed that enhanced heat transfer performance could be achieved using heat exchangers incorporating very small channels for the working fluid to flow. They performed optimizations that showed 58 m (0.002 in) to be the ideal channel width for heat transfer with water as a working fluid. Channe ...
... 1984) showed that enhanced heat transfer performance could be achieved using heat exchangers incorporating very small channels for the working fluid to flow. They performed optimizations that showed 58 m (0.002 in) to be the ideal channel width for heat transfer with water as a working fluid. Channe ...
Lowering the sink temperature for a desert solar air
... the cover bottom and sink surface. The air gap provides cheap and excellent insulation properties to reduce heat conduction from cover to ground. Since gap height is small, and the hotter surface is the top one, convective effects (all natural) are negligible. After sunset and until next day sunrise ...
... the cover bottom and sink surface. The air gap provides cheap and excellent insulation properties to reduce heat conduction from cover to ground. Since gap height is small, and the hotter surface is the top one, convective effects (all natural) are negligible. After sunset and until next day sunrise ...
Design Objective 108-115096
... Subject mated samples to temperature of -40°C 96 hours or longer (Connector should soldered on the testing board. Cool down from ambient temperature to -40°C with speed 1 °C/minute , keep the temperature at -40°C or lower for 96 hours or longer, then temperature rise to 25°C with 1 °C/minute speed), ...
... Subject mated samples to temperature of -40°C 96 hours or longer (Connector should soldered on the testing board. Cool down from ambient temperature to -40°C with speed 1 °C/minute , keep the temperature at -40°C or lower for 96 hours or longer, then temperature rise to 25°C with 1 °C/minute speed), ...
U3 S1 L3 calorimetry
... thermometer, and a known amount of water (see Figure 17.1 on p.661 of MHR). ...
... thermometer, and a known amount of water (see Figure 17.1 on p.661 of MHR). ...
Dynamic insulation
Dynamic insulation is a form of insulation where cool outside air flowing through the thermal insulation in the envelope of a building will pick up heat from the insulation fibres. Buildings can be designed to exploit this to reduce the transmission heat loss (U-value) and to provide pre-warmed, draft free air to interior spaces. This is known as dynamic insulation since the U-value is no longer constant for a given wall or roof construction but varies with the speed of the air flowing through the insulation (climate adaptive building shell). Dynamic insulation is different from breathing walls. The positive aspects of dynamic insulation need to be weighed against the more conventional approach to building design which is to create an airtight envelope and provide appropriate ventilation using either natural ventilation or mechanical ventilation with heat recovery. The air-tight approach to building envelope design, unlike dynamic insulation, results in a building envelope that provides a consistent performance in terms of heat loss and risk of interstitial condensation that is independent of wind speed and direction. Under certain wind conditions a dynamically insulated building can have a higher heat transmission loss than an air-tight building with the same thickness of insulation.