Answer Happy

10:03 15.41 - Applications of Thermodynamics: Heat Pumps and Refrigerators LTE Part A What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 46.0°C and a cold reservoir temperature of -6.0°C. Submit Answer Tries 0/10 Part B How much heat transfer occurs into the warm environment if 6.48x 107 J of work (18.0 kW-h) is put into it? Submit Answer Tries 0/10 Part C If the cost of this work input is 10.7 cents/kW-h, how much does its cost (in $) if operated using electric power? (You do not need to enter any units.) Submit Answer Tries 0/10 Part D How does the cost (in $) compare with the direct heat transfer achieved by burning natural gas at a cost of 58.0 cents per therm? (A therm is a common unit of energy for natural gas and equals 1.055×108 J.) (You do not need to enter any units.) Submit Answer Tries 0/10