Answered: Consider a Carnot cycle executed in a…

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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Question

Consider a Carnot cycle executed in a closed system with air as the working fluid. The
maximum pressure in the cycle is 800 kPa while the maximum temperature is 750 K. If
the entropy increase during the isothermal heat rejection process is 0.25 kJ/kg.K and the
net work output is 100 kJ/kg, determine (a) the minimum pressure in the cycle,(b) the
heat rejection from the cycle, and (c) the thermal efficiency of the cycle. (d) If an actual
heat engine cycle operates between the same temperature limits and produces 5200
kW of power for an air flow rate of 90 kg/s, determine the second law efficiency of this
cycle.

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