I'm having a little trouble in completing this problem. I would appreciate your answer if anyone knows how to solve it. Thanks An ideal refrigerator removes heat at a rate of 0.15kW from an interior temperature of 1 degree celsius. The exhaust from the refrigerator is 45 degrees celsius. How much electrical power is used. *Note that this is a refrigerator problem (reverse process from a carnot engine) I have found the efficiency using Th/Tc - 1 = .29 I do not know how to proceed after this.