A solution with a boiling point rise of 10 K is obtained with a thermocompression system operating under atmospheric pressure. (The specific heat of the superheated solvent vapor is 1.926 kJ/kg K.)

a) What is the compressor outlet pressure required to create a temperature difference of 15 K?

b) Since the compressor operates isentropically with 75% efficiency, find the amount of enthalpy that must be added to each kg of solvent vapor.