A heat pump which operates on the ideal vapor-compression cycle with R- 134a is used to transfer heat at a rate of 20 kW to a space maintained at 50oC from outside atmosphere at 0oC. A temperature difference of 5oC is maintained for effective heat exchange between the refrigerant and its surroundings at the evaporator. The atmospheric conditions are 100 kPa and 0oC.
(a) Perform an energy inventory on a rate (kW) basis for the entire cycle complete with an energy flow diagram. Determine
(b) The power consumption rate
(c) The energetic efficiency
(d) The COP of the system.