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correction factor or CF (show the actual plotting of CF on temp-correction chart) b) true LMTD

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.46P

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Concept explainers

Basic Thermodynamic Processes

The word 'thermodynamics' can be divided into two words, 'thermo' and 'dynamics'. The word thermo deals with the heat and thermal phenomenon, whereas dynamics deals with forces or external agent that drives the heat flow or aids in the motion of heat.

Question

A 2 - shell pass & 4 - tube pass heat exchanger is designed to heat water from 40 C to 90 C flowing inside the tubes at a rate of 7.5 kg/sec while hot gases flowing in the shell at a rate of 10.42 kg/sec with temperature leaving the heat exchanger at 110 C. Consider the specific heat of water and gas of 4.2 kJ/kg K & 1.08 kJ/kg K, respectively. Determine:
a) correction factor or CF (show the actual plotting of CF on temp-correction chart)
b) true LMTD

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