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An engine has an efficiency e,. The engine takes input heat of magnitude |Q| from a hot reservoir and delivers work of magnitude |W|. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e, and delivers work of magnitude |W|. The over- all efficiency of this two-engine device is the magnitude of the total work delivered (|W|| + |W2l) divided by the magnitude |QH| of the input heat. Find an expression for the overall efficiency e in terms of e, and e2.

An engine has an efficiency e,. The engine takes input heat of magnitude |Q| from a hot reservoir and delivers work of magnitude |W|. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e, and delivers work of magnitude |W|. The over- all efficiency of this two-engine device is the magnitude of the total work delivered (|W|| + |W2l) divided by the magnitude |QH| of the input heat. Find an expression for the overall efficiency e in terms of e, and e2.

Introduction to Chemical Engineering Thermodynamics
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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An engine has an efficiency e,. The engine takes input heat of magnitude |Q| from a hot reservoir and delivers work of magnitude |W|. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e, and delivers work of magnitude |W|. The over- all efficiency of this two-engine device is the magnitude of the total work delivered (|W|| + |W2l) divided by the magnitude |QH| of the input heat. Find an expression for the overall efficiency e in terms of e, and e2.
Transcribed Image Text:An engine has an efficiency e,. The engine takes input heat of magnitude |Q| from a hot reservoir and delivers work of magnitude |W|. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e, and delivers work of magnitude |W|. The over- all efficiency of this two-engine device is the magnitude of the total work delivered (|W|| + |W2l) divided by the magnitude |QH| of the input heat. Find an expression for the overall efficiency e in terms of e, and e2.
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