If the heat exchanger is characterised by uniform overall heat transfer coefficient, using the LMTD method, determine: e) The maximum possible heat transfer rate. f) The heat exchanger effectiveness. g) The ratio of the heat transfer area under parallel flow to the heat transfer area under counter flow. Comment on the answer.
If the heat exchanger is characterised by uniform overall heat transfer coefficient, using the LMTD method, determine: e) The maximum possible heat transfer rate. f) The heat exchanger effectiveness. g) The ratio of the heat transfer area under parallel flow to the heat transfer area under counter flow. Comment on the answer.
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 10.12P
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Concept explainers
Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
Transcribed Image Text:You are then asked by your supervisor to design a concentric tube heat exchanger to operate under the
following conditions:
Cold Fluid
m = 0.125 kg/s
Cp 4200 J/kgK
T₁ = 40°C
To = 95°C
Hot Fluid:
m = 0.125 kg/s
Cp = 2100 J/kgK
T₁ = 210°C
If the heat exchanger is characterised by uniform overall heat transfer coefficient, using the LMTD
method, determine:
e) The maximum possible heat transfer rate.
f) The heat exchanger effectiveness.
g) The ratio of the heat transfer area under parallel flow to the heat transfer area under counter flow.
Comment on the answer.
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