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Problem 1 A completely reversible heat engine operates with a source at 2000 R and a sink at 700 R. If the entropy of the sink increases by 15 Btu/R, how much will the entropy of the source decrease? How much heat, in Btu, is transferred from the source? Problem 2 Heat in the amount of 150 kJ is transferred directly from a hot reservoir at 1000 K to a cold reservoir at 500 K. Calculate the entropy change of the two reservoirs and determine if the increase of entropy principle is satisfied.

Problem 1 A completely reversible heat engine operates with a source at 2000 R and a sink at 700 R. If the entropy of the sink increases by 15 Btu/R, how much will the entropy of the source decrease? How much heat, in Btu, is transferred from the source? Problem 2 Heat in the amount of 150 kJ is transferred directly from a hot reservoir at 1000 K to a cold reservoir at 500 K. Calculate the entropy change of the two reservoirs and determine if the increase of entropy principle is satisfied.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Problem 1 A completely reversible heat engine operates with a source at 2000 R and a sink at 700 R. If the entropy of the sink increases by 15 Btu/R, how much will the entropy of the source decrease? How much heat, in Btu, is transferred from the source? Problem 2 Heat in the amount of 150 kJ is transferred directly from a hot reservoir at 1000 K to a cold reservoir at 500 K. Calculate the entropy change of the two reservoirs and determine if the increase of entropy principle is satisfied.
Transcribed Image Text:Problem 1 A completely reversible heat engine operates with a source at 2000 R and a sink at 700 R. If the entropy of the sink increases by 15 Btu/R, how much will the entropy of the source decrease? How much heat, in Btu, is transferred from the source? Problem 2 Heat in the amount of 150 kJ is transferred directly from a hot reservoir at 1000 K to a cold reservoir at 500 K. Calculate the entropy change of the two reservoirs and determine if the increase of entropy principle is satisfied.
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