1. A Carnot refrigeration cycle operates in a room in which the temperature is 20 °C. It is required to transfer heat from the cold space at the rate of 5 kW in order to maintain its temperature at -30 °C. What power motor is required to operate this refrigerator. 2. Calculate the thermal efficiency of a Carnot cycle heat engine operating between 500 °C and 40 °C.
1. A Carnot refrigeration cycle operates in a room in which the temperature is 20 °C. It is required to transfer heat from the cold space at the rate of 5 kW in order to maintain its temperature at -30 °C. What power motor is required to operate this refrigerator. 2. Calculate the thermal efficiency of a Carnot cycle heat engine operating between 500 °C and 40 °C.
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter45: Domestic Refrigerators And Freezers
Section: Chapter Questions
Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...
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