Refrigerant 134a is the working fluid in a
Chapter 10, Problem 36P(choose chapter or problem)
Refrigerant 134a is the working fluid in a vapor compression heat pump that provides 35 kW to heat a dwelling on a day when the outside temperature is below freezing. Saturated vapor enters the compressor at 1.6 bar, and saturated liquid exits the condenser, which operates at 8 bar. Determine, for isentropic compression
(a) the refrigerant mass flow rate, in kg/s.
(b) the compressor power, in kW.
(c) the coefficient of performance.
Recalculate the quantities in parts (b) and (c) for an isentropic compressor efficiency of 75%.
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