Mechanical Engineering :: Heat Transfer,Refrigeration and Air Conditioning
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If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.
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The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles caused by some mechanical means, is known as
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When α is absorptivity, ρ is reflectivity and τ is transmittivity, then for a diathermanous body,
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When there is an addition of water vapour to the air of enclosed space, a gain in __________ is said to occur.
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The central air conditioning system has __________ overall efficiency as compared to individual systems.
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The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
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An ordinary passenger aircraft requires a cooling system of capacity.
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In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
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The thermal diffusivity for solids is generally less than those for liquids and gases.
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