A heat pump which operates on the vapor-compression cycle uses R-134a as the working fluid. Refrigerant enters the compressor at 20 lbf/in2,10oF and is compressed adiabatically to 200 lbf/in2, 180oF. Saturated liquid enters the expansion valve at 200 lbf/in2, 100oF and exits at 20 lbf/in2. The atmosphere temperature is 20oF.
(a) Perform an energy inventory on a rate (Btu/min) basis for the entire cycle complete with an energy flow diagram. Determine,
(b) The energetic efficiency.
(c) COP of the system.
(d) Identify the device with the highest rate of energy destruction.