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A reversible heat engine operates between two reservoirs: one at T 395.0°C and another at 1) a. Te 150°C. It goes through a cycle consisting of an adiabatic compression during which it ab- sorbs 125.0J of heat energy, followed by an isothermal expansion at Th, followed by an adiabatic expansion, followed by an isothermal compression at Te. The output of the engine is used to run a reversible refrigerator operating between the same two reservoirs, that has a cycle consisting of an adiabatic expansion, followed by an isothermal expansion at Te, followed by an adiabatic com- pression, followed by an isothermal compression at Th The output of the engine is used to run the refrigerator. b. с. d. е. f. a) How much work is done in compressing the refrigerant? b) How much heat is released by the engine to the cold reservoir? c) How much heat is released by the refrigerator to the hot reservoir?

A reversible heat engine operates between two reservoirs: one at T 395.0°C and another at 1) a. Te 150°C. It goes through a cycle consisting of an adiabatic compression during which it ab- sorbs 125.0J of heat energy, followed by an isothermal expansion at Th, followed by an adiabatic expansion, followed by an isothermal compression at Te. The output of the engine is used to run a reversible refrigerator operating between the same two reservoirs, that has a cycle consisting of an adiabatic expansion, followed by an isothermal expansion at Te, followed by an adiabatic com- pression, followed by an isothermal compression at Th The output of the engine is used to run the refrigerator. b. с. d. е. f. a) How much work is done in compressing the refrigerant? b) How much heat is released by the engine to the cold reservoir? c) How much heat is released by the refrigerator to the hot reservoir?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A reversible heat engine operates between two reservoirs: one at T = 395.0°C and another at 1) a. T 150°C. It goes through a cycle consisting of an adiabatic compression during which it ab- sorbs 125.0J of heat energy, followed by an isothermal expansion at Th, followed by an adiabatic expansion, followed by an isothermal compression at Te. The output of the engine is used to run a reversible refrigerator operating between the same two reservoirs, that has a cycle consisting of an adiabatic expansion, followed by an isothermal expansion at Te, followed by an adiabatic com- pression, followed by an isothermal compression at Th. The output of the engine is used to run the refrigerator. b. с. d. е. f. a) How much work is done in compressing the refrigerant? b) How much heat is released by the engine to the cold reservoir? c) How much heat is released by the refrigerator to the hot reservoir? d) What is the coefficient of performance of the refrigerator? e) What is the total change in entropy of the universe in running this system? f) Suppose the ambient temperature is 20.0°C, and the hot reservoir consists of a spherical tank with a radius of 4.00 m, that acts as an ideal emitter of radiation. If all the radiant energy emitted by the tank could be captured, what is the average amount of work that could be done each second?
Transcribed Image Text:A reversible heat engine operates between two reservoirs: one at T = 395.0°C and another at 1) a. T 150°C. It goes through a cycle consisting of an adiabatic compression during which it ab- sorbs 125.0J of heat energy, followed by an isothermal expansion at Th, followed by an adiabatic expansion, followed by an isothermal compression at Te. The output of the engine is used to run a reversible refrigerator operating between the same two reservoirs, that has a cycle consisting of an adiabatic expansion, followed by an isothermal expansion at Te, followed by an adiabatic com- pression, followed by an isothermal compression at Th. The output of the engine is used to run the refrigerator. b. с. d. е. f. a) How much work is done in compressing the refrigerant? b) How much heat is released by the engine to the cold reservoir? c) How much heat is released by the refrigerator to the hot reservoir? d) What is the coefficient of performance of the refrigerator? e) What is the total change in entropy of the universe in running this system? f) Suppose the ambient temperature is 20.0°C, and the hot reservoir consists of a spherical tank with a radius of 4.00 m, that acts as an ideal emitter of radiation. If all the radiant energy emitted by the tank could be captured, what is the average amount of work that could be done each second?
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