A 100kg/hr hot fluid is used to heat a cold fluid from 5°C to 72°C using a double pipe heat exchanger (DPHE). The hot fluid enters at 208°C and leaves the DPHE at 102°C. The Cp of hot fluid is 1.10 kcal/kg°C and the Cp of cold fluid 0.95 kcal/kg°C. a) Calculate the LMTD if the the flow is cocurrent in °C b) Calculate the LMTD if the the flow is countercurrent in °C c) Find the mass flow rate in kg/hr of cold fluid if the heat loss during the exchange is 10%. The LMTD is The LMTD is The mass flowrate of cold fluid is
A 100kg/hr hot fluid is used to heat a cold fluid from 5°C to 72°C using a double pipe heat exchanger (DPHE). The hot fluid enters at 208°C and leaves the DPHE at 102°C. The Cp of hot fluid is 1.10 kcal/kg°C and the Cp of cold fluid 0.95 kcal/kg°C. a) Calculate the LMTD if the the flow is cocurrent in °C b) Calculate the LMTD if the the flow is countercurrent in °C c) Find the mass flow rate in kg/hr of cold fluid if the heat loss during the exchange is 10%. The LMTD is The LMTD is The mass flowrate of cold fluid is
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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Transcribed Image Text:A 100kg/hr hot fluid is used to heat a cold fluid from 5°C to 72°C using a double pipe heat exchanger (DPHE). The hot fluid enters at 208°C
and leaves the DPHE at 102°C. The Cp of hot fluid is 1.10 kcal/kg°C and the Cp of cold fluid 0.95 kcal/kg°C.
a) Calculate the LMTD if the the flow is cocurrent in °C
b) Calculate the LMTD if the the flow is countercurrent in °C
c) Find the mass flow rate in kg/hr of cold fluid if the heat loss during the exchange is 10%.
The LMTD is
The LMTD is
The mass flowrate of cold fluid is
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