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For obtaining high COP, the pressure range of compressor should be
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The boiling point of ammonia is
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Freon group of refrigerants are
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A thermostatic expansion valve in a refrigeration system
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In a refrigeration system, heat absorbed in comparison to heat rejected is
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Most thermostatic expansion valves are set for a superheat of
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The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.
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The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is
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The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate following h.p. per ton of refrigeration
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When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be
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