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An ideal gas that is heated at constant pressure enters the steady-flow heat exchanger at 343.15 K. This was heated by another stream of the same ideal gas which enters at 593.15 K into its final temperature of 463.15 K. Assume that the drop in the temperature of the second stream is the same as the rise in the temperature of the second stream. The flow rates of the two streams are the same, and no heat losses occur during the whole process. Assume that Cp = 7/2R.

An ideal gas that is heated at constant pressure enters the steady-flow heat exchanger at 343.15 K. This was heated by another stream of the same ideal gas which enters at 593.15 K into its final temperature of 463.15 K. Assume that the drop in the temperature of the second stream is the same as the rise in the temperature of the second stream. The flow rates of the two streams are the same, and no heat losses occur during the whole process. Assume that Cp = 7/2R.

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 ideal gas that is heated at constant pressure enters the steady-flow heat exchanger at 343.15 K. This was heated by another stream of the same ideal gas which enters at 593.15 K into its final temperature of 463.15 K. Assume that the drop in the temperature of the second stream is the same as the rise in the temperature of the second stream. The flow rates of the two streams are the same, and no heat losses occur during the whole process. Assume that Cp = 7/2R. • Calculate the molar entropy change for the two gas streams for countercurrent flow. • Calculate the AStotal for the whole process
Transcribed Image Text:An ideal gas that is heated at constant pressure enters the steady-flow heat exchanger at 343.15 K. This was heated by another stream of the same ideal gas which enters at 593.15 K into its final temperature of 463.15 K. Assume that the drop in the temperature of the second stream is the same as the rise in the temperature of the second stream. The flow rates of the two streams are the same, and no heat losses occur during the whole process. Assume that Cp = 7/2R. • Calculate the molar entropy change for the two gas streams for countercurrent flow. • Calculate the AStotal for the whole process
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