A heat engine is assumed to operate on a Carnot cycle. It receives 900kJ heat from a high temperature reservoir at 550oC and rejects heat to a low temperature reservoir at 30oC. a. Calculate the thermal efficiency of the cycle. b. What is QH and QL? c. What is the net work produced by this cycle? d. Does this process violate Kelvin-Plank statement? Explain. e. An inventor claimed that he built a heat engine operating between the same reservoirs that give a thermal efficiency of 80%.Comments about his claim. f. Draw this process on a Ts diagram with proper labelling. g. If the cycle is reversed and operated as a heat pump, calculate its performance.
A heat engine is assumed to operate on a Carnot cycle. It receives 900kJ heat from a high temperature reservoir at 550oC and rejects heat to a low temperature reservoir at 30oC. a. Calculate the thermal efficiency of the cycle. b. What is QH and QL? c. What is the net work produced by this cycle? d. Does this process violate Kelvin-Plank statement? Explain. e. An inventor claimed that he built a heat engine operating between the same reservoirs that give a thermal efficiency of 80%.Comments about his claim. f. Draw this process on a Ts diagram with proper labelling. g. If the cycle is reversed and operated as a heat pump, calculate its performance.
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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Question
A heat engine is assumed to operate on a Carnot cycle. It receives 900kJ
heat from a high temperature reservoir at 550oC and rejects heat to a low
temperature reservoir at 30oC.
a. Calculate the thermal efficiency of the cycle.
b. What is QH and QL?
c. What is the net work produced by this cycle?
d. Does this process violate Kelvin-Plank statement? Explain.
e. An inventor claimed that he built a heat engine operating between the same reservoirs that give a thermal efficiency of 80%.Comments about his claim.
f. Draw this process on a Ts diagram with proper labelling.
g. If the cycle is reversed and operated as a heat pump, calculate its
performance.
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