An ice-making machine operates in a Carnot cycle. It takes heat from water at 270 K and rejects heat to the room 300 K.  Suppose 300000 J of heat is extracted from the cold reservoir per cycle. 27. What is the thermal efficiency of this engine? 28.  How much heat is discarded to the room per cycle?

University Physics Volume 2
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Chapter4: The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 24P: An engine with an efficiency of 0.30 absorbs 500 J of heat per cycle. (a) How much work does it...
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An ice-making machine operates in a Carnot cycle. It takes heat from water at 270 K and rejects heat to the room 300 K.  Suppose 300000 J of heat is extracted from the cold reservoir per cycle.

27. What is the thermal efficiency of this engine?

28.  How much heat is discarded to the room per cycle?

For nos. 27-28. An ice-making machine operates in a Carnot cycle. It takes heat from water at 270 K and rejects heat to the room 300
K. Suppose 300000 J of heat is extracted from the cold reservoir per cycle.
27. What is the thermal efficiency of this engine?
28. How much heat is discarded to the room per cycle?
Transcribed Image Text:For nos. 27-28. An ice-making machine operates in a Carnot cycle. It takes heat from water at 270 K and rejects heat to the room 300 K. Suppose 300000 J of heat is extracted from the cold reservoir per cycle. 27. What is the thermal efficiency of this engine? 28. How much heat is discarded to the room per cycle?
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