Question 3 (20 marks)

A Carnot cycle heat engine operating between 630 °C and 25 °C absorbs 1200 kJ of heat from

the high-temperature reservoir. The work produced is used to power another Carnot cycle heat

pump which transfers 1500 kJ of heat from 630 °C to a reservoir at a higher temperature TH.

a) Calculate the amount of work exchanged between the two cycles.

Calculate the temperature TH

b)

c)

Calculate the amount of heat that is transferred to the reservoir at Ti