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Temperature
Temperature

... Now cup your hands around the bottle and observe what happens. Explain your observations. 3. Thermal Expansion of liquids Hold the beaker in your hands. Explain what you observe. 4. Thermal Expansion of solids - bimetallic strip Heat the strip using the hairdryer or hot air gun. What happens to the ...
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... Figure 3 Drying rates in the rising rate, constant rate, and diffusion regimes of film drying coating in order to evaporate the solvent, the efficiency of convection dryers is often characterized in terms of the heat transfer coefficient as it measures the ability of the dryer to supply energy for a ...
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... reasonable value of isentropic efficiency to each component. In this way a pump and expander that are well designed for an application can be modeled without the need to specify and account for their design or geometry. However, the methods of accounting for heat transfer irreversibility in the heat ...
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... There are a number of different applications that could use heat pipes or loop heat pipes (LHPs) in the intermediate temperature range of 450 to 725 K (170 to 450°C), including space nuclear power system radiators, fuel cells, and high temperature electronics cooling. Historically, water has been us ...
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... Problem solving in Thermodynamics, fluid mechanics and heat transfer require values of fluid properties, such as air, water, refrigerants, carbon dioxide, etc. The properties of substances are presented as tables. This is due to the complex thermodynamics property relations of substances and usually ...
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... Schumann’s model. Laybourn [3] predicted the heat transfer rates of cold storage tank during charging and discharging for building cooling applications with rectangular capsules using the concept of thermal resistance, which comprised of the convective resistance, wall resistance and ice layer resis ...
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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.
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