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A double pipe heat exchanger is used to cool a 15000 lb/hr air from 175°F to 75°F. Air enters on the annular space of the tube while the water enters counter-currently on the inner pipe at 50°F and should exit at 6200 lb/hr. Determine the LMTD, the heat dissipated, the exit temperature of water, and the area needed if U=340 W/m2-K of the heat exchanger. Cp,air = 0.25 btu/lb F, Cp,.water = 1.00 btu/lb - F %3D

A double pipe heat exchanger is used to cool a 15000 lb/hr air from 175°F to 75°F. Air enters on the annular space of the tube while the water enters counter-currently on the inner pipe at 50°F and should exit at 6200 lb/hr. Determine the LMTD, the heat dissipated, the exit temperature of water, and the area needed if U=340 W/m2-K of the heat exchanger. Cp,air = 0.25 btu/lb F, Cp,.water = 1.00 btu/lb - F %3D

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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A double pipe heat exchanger is used to cool a 15000 lb/hr air from 175°F to 75°F. Air enters on the annular space ok the tube while the water enters counter-currently on the inner pipe at 50°F and should exit at 6200 lb/hr. Determine the LMTD, the heat dissipated, the exit temperature of water, and the area needed if U=340 W/m2-K of the heat exchanger. Cp.air = 0.25 btu/lb F, Cp,water = 1.00 btu/lb F
Transcribed Image Text:A double pipe heat exchanger is used to cool a 15000 lb/hr air from 175°F to 75°F. Air enters on the annular space ok the tube while the water enters counter-currently on the inner pipe at 50°F and should exit at 6200 lb/hr. Determine the LMTD, the heat dissipated, the exit temperature of water, and the area needed if U=340 W/m2-K of the heat exchanger. Cp.air = 0.25 btu/lb F, Cp,water = 1.00 btu/lb F
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