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A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be
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The wet bulb temperature during sensible cooling of air
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For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
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In case of sensible cooling of air, the coil efficiency is given by
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The relative coefficient of performance is equal to
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Air refrigerator works on
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The emissivity of a polished silver body is _________ as compared to black body.
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An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by
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A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
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In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
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