As part of a bioreactor cooling system, 100 kg/h of refrigerant 134A is evaporated in a heat exchanger. Before the exchanger, the refrigerant is throttled from 0.925 MPa and 17 C down to 0.16 MPa in a throttling valve. The outlet of the valve is evaporated using a refrigerant stream R1150 (pure ethylene), which enters the shell of the exchanger at the rate of 760 kg/h, 35 C and 0.5 MPa, and is cooled at the outlet to 18 C. Consider R1150 as an ideal gas of variable Cp with temperature. a) Mark the phase(s) present in current 2: compressed liquid saturated liquid saturated vapor superheated vapor b) the amount of heat transferred by the R1150: kW c) The temperature of stream 5: C d) The entropy generation rate in the exchanger: kW/K PLEASE ANSWERS, RESULTS, NO ONLY EXPLANATION PLEASE