16th Edition

ISBN: 9781938168932

Author: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram

Publisher: OpenStax

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Chapter 15, Problem 55PE

A large electrical power station generates 1000 MW of electricity with an efficiency of 35.0%. (a) Calculate the heat transfer to the power station, Q_h, in one day. (b) How much heat transfer Q_c occurs to the environment in one day? (c) If the heat transfer in the cooling towers is from 35 .0 ° C water into the local air mass, which increases in temperature from 18 .0 ° C to 2 0.0 ° C , what is the total increase in entropy due to this heat transfer? (d) How much energy becomes unavailable to do work because of this increase in entropy, assuming an 18 .0 ° C lowest temperature? (Part of Q_ccould be utilized to operate heat engines or far simply heating the surroundings, but it rarely is.)

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Chapter 15, Problem 54PE

Chapter 15, Problem 56PE

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Chapter 15 Solutions

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