A heat pump (see Problem 5.49) should upgrade 5 MW of heat at 85?C to heat delivered at 150?C. For a reversible heat pump, what are the fluxes of entropy into and out of the heat pump?
Problem 5.49
A large heat pump should upgrade 4 MW of heat at 65?C to be delivered as heat at 145?C. What is the minimum amount of work (power) input that will drive this?