Refrigerant 134a is the working fluid in a vapor-compression heat pump that provides 30 kw to heat a dwelling on a day when the outside temperature is below freezing. saturated vapor enters the compressor at 2.1 bar, and saturated liquid exits the condenser, which operates at 8 bar. determine for an isentropic compressor efficiency of 85%: (a) the refrigerant mass flow rate, in kg/s.; (b) the magnitude of the compressor power, in kw; (c) the coefficient of performance. (