Alarge refrigeration plant is to be maintained at −15◦c, and it requires refrigeration at a rate of 100 kw. the condenser of the plant is to be cooled by liquid water, which experiences a temperature rise of 8◦c as it flows over the coils of the condenser. assume that the plant operates on a vapor-compression refrigeration cycle with r-134a as the working fluid. the refrigerant enters the compressor as saturated vapor at 120 kpa and is compressed to 700 kpa. the refrigerant exits the condenser as saturated liquid. the compressor isentropic efficiency is 85%. consider cooling water as an incompressible substance with constant specific heat. determine: a. mass flow rate of refrigerant [kg/s] b. power input to the compressor [kw] c. coefficient of performance d. mass flow rate of cooling water [kg/s]