(10 pts - 2pts each part) It is proposed to replace the cycle in problem 3 with a 2-stage cycle, shown below. R134a is still the refrigerant. Between the two ideal cycles is a heat exchanger that operates between the condenser of the lower T cycle and the evaporator of the higher T cycle. The hotter cycle operates between 7 bar and 3.5 bar, while the cooler cycle operates between 3.5 bar and 1.2 bar. If the flow rate of refrigerant in the hotter cycle is 0.5 mol//s, determine: vowe O valve _P=1,2 bar CONT P-3.5 bar Refrigerated QC slace, low T Evapl Pribar QH HighT Condenser reservoir evalerater Wez wel Compressor 2 Comoressor) a. The refrigerant flow rate of the cooler cycle b. The rate of heat removal from the refrigerated space c. The total power input required for the compressors d. The COP