15.41- Applications of Thermodynamics: Heat Pumps and Refrigerators Part A What is the best coefficient of performance f

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15 41 Applications Of Thermodynamics Heat Pumps And Refrigerators Part A What Is The Best Coefficient Of Performance F 1 (33.4 KiB) Viewed 52 times

15.41- Applications of Thermodynamics: Heat Pumps and Refrigerators Part A What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 48.0°C and a cold reservoir temperature of -8.0°C. < 5.73 You are correct. Your receipt no. is 164-9370 Previous Tries Part B How much heat transfer occurs into the warm environment if 5.76x107 3 of work (16.0 kW-h) is put into it? 3.30×108 J You are correct. Your receipt no. is 164-93346 Previous Tries Part C If the cost of this work input is 12.1 cents/kW-h, how much does its cost (in $) if operated using electric power? (You do not need to enter any units.): $ 1.94 You are correct. Your receipt no. is 164-79450 Previous Tries Part D How does the cost (in $) compare with the direct heat transfer achieved by burning natural gas at a cost of 72.0 cents per therm? (A therm is a common unit of energy for natural gas and equals 1.055x108 J.) (You do not need to enter any units.) $ 0.393 Submit Answer Incorrect. Tries 4/10 Previous Tries