Refrigerant 134a is the working fluid in a vapor-compression heat pump that provides 25 kW to heat a dwelling on a day w
Posted: Tue Apr 12, 2022 9:58 am
Refrigerant 134a is the working fluid in a vapor-compression
heat pump that provides 25 kW to heat a dwelling on a day
when the outside temperature is below freezing. Saturated vapor
enters the compressor at 2.6 bar, and saturated liquid
exits the condenser, which operates at 8 bar.
Determine for an isentropic compressor efficiency
of 75%:
(a) the refrigerant mass flow rate, in kg/s.
(b) the magnitude of the compressor power, in kW.
(c) the coefficient of performance.
heat pump that provides 25 kW to heat a dwelling on a day
when the outside temperature is below freezing. Saturated vapor
enters the compressor at 2.6 bar, and saturated liquid
exits the condenser, which operates at 8 bar.
Determine for an isentropic compressor efficiency
of 75%:
(a) the refrigerant mass flow rate, in kg/s.
(b) the magnitude of the compressor power, in kW.
(c) the coefficient of performance.