Repeat Problem 11.67 for a case where an internal heat exchanger, with effectiveness of 70%, is placed between the outlet of the evaporator and the outlet of the condenser Problem...

Repeat Problem 11.67 for a case where an internal heat exchanger, with effectiveness of 70%, is placed between the outlet of the evaporator and the outlet of the condenser

Problem 11.67~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

An air conditioner of 4 kW capacity operates with R410a at the following conditions: The evaporation temperature is 5°C and the refrigerant leaves as saturated vapor. The condensation temperature is 50°C and the refrigerant leaves as saturated liquid. The condenser is cooled by outside air entering at 110 kPa and 35°C, and leaving at 102 kPa and 45°C. The isentropic efficiency of the compressor is 0.8 and its mechanical efficiency is 0.94.

a. Describe the cycle on a p–h diagram.

 b. Find the compressor power.

 c. Find the COP.

 d. Find the mass fl ow rate of the cooling water.