What is the best coefficient of performance for a refrigerator that cools an environment at –R, °C and has heat transfer to reservoir at 150.0°C? (b) How much work in joules must be done for a heat transfer of 4186 kJ from the cold environment? (c) What is the cost of doing this if the work costs 0.1 Rs per 3.60 x 10° J (a kilowatt-hour)? (d) How many kJ of heat transfer occurs into the warm environment? where, R, is last two digits of registration no. (e.g. for registration no. 11603309 take R, as 9 °C

What is the best coefficient of performance for a refrigerator that cools an environment at –R, °C and has heat transfer to reservoir at 150.0°C? (b) How much work in joules must be done for a heat transfer of 4186 kJ from the cold environment? (c) What is the cost of doing this if the work costs 0.1 Rs per 3.60 x 10° J (a kilowatt-hour)? (d) How many kJ of heat transfer occurs into the warm environment? where, R, is last two digits of registration no. (e.g. for registration no. 11603309 take R, as 9 °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 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

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