A Carnot heat engine obtains 3000 kJ heat from a high-temperature reservoir at 850 °C. It rejects the waste heat to a low-temperature reservoir at 75 °C. The work produced by the Carnot heat engine is used to power up a reversible refrigerator that removes heat at a refrigerated space maintained at -10 °C. The heat removed is discarded in the same low-temperature reservoir as that of the Carnot heat engine. Determine the following: | at (a) The total heat rejection to the reservoir at 75 °C (b) The total heat rejection if the actual efficiency of the heat engine and COP of the refrigerator is 35% of the maximum possible values
A Carnot heat engine obtains 3000 kJ heat from a high-temperature reservoir at 850 °C. It rejects the waste heat to a low-temperature reservoir at 75 °C. The work produced by the Carnot heat engine is used to power up a reversible refrigerator that removes heat at a refrigerated space maintained at -10 °C. The heat removed is discarded in the same low-temperature reservoir as that of the Carnot heat engine. Determine the following: | at (a) The total heat rejection to the reservoir at 75 °C (b) The total heat rejection if the actual efficiency of the heat engine and COP of the refrigerator is 35% of the maximum possible values
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:A Carnot heat engine obtains 3000 kJ heat from a high-temperature reservoir at 850 °C. It rejects
the waste heat to a low-temperature reservoir at 75 °C. The work produced by the Carnot heat
engine is used to power up a reversible refrigerator that removes heat at a refrigerated space
maintained at -10 °C. The heat removed is discarded in the same low-temperature reservoir as that
of the Carnot heat engine. Determine the following:
(a) The total heat rejection to the reservoir at 75 °C
(b) The total heat rejection if the actual efficiency of the heat engine and COP of the
refrigerator is 35% of the maximum possible values
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