R-410a flows inside the tubes and evaporates at a constant

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Reference no: EM13624045

The cooling coil of a small air-conditioning system is to be designed for a heat-transfer rate of 48,000 Btu/hr from air at 14.7 psia and 90ºF, which flows steadily at a rate of 1500 ft3/min. The cooling coil is a finned-tube heat exchanger. The air flows over the finned surfaces, and heat transfer from the air causes the refrigerant inside the tubes to evaporate. R-410a flows inside the tubes and evaporates at a constant pressure of 40 psia from saturated liquid conditions to an exit temperature of 40ºF. Calculate the mass flow rate of liquid required and the exit temperature of the air.

Reference no: EM13624045

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