Question

The COP of a heat pump is 5 and the power required to drive it is 35 kW. (a) Evaluate the heat transfers from and to the working fluid

Answer 1

Answer:Given

Cop=5

Driving power/ work input=35kw

Cop of heat pump= heat rejected to higher temperature reservoir (Q1)/work input

5= Q1/35kw

Q1= 175KW

THEREFORE heat transferred from system is 175KJ/s

Q1=Q2+W Q2= heat taken from lower temperature reservoir

175-35=Q2

Q2= 140 KJ/s

Heat transferred to fluid is 140 kj/s

Explanation: