An ideal vapor-compression refrigeration cycle, with Ammonia as the working fluid, is modified to include a counterflow heat exchanger (sometimes called a suction line heat exchanger). The working fluid leaves the evaporator as a saturated vapor at 1.5 bar and is heated at a constant pressure to 10C before entering the compressor. The compressor is isentropic and compresses to 20 bar then the fluid enters the condenser where it is cooled at a constant pressure to 49C, 20bar. The liquid then passes through the heat exchanger, entering the expansion valve at 20 bar. If the mass flow rate of refrigerant is 10 kg/min, find: