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Heat loss through pipes excel

by evol1
Tags: excel, heat, loss, pipes
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evol1
#1
Jun25-12, 11:27 AM
P: 2
Hi there,
I am trying to make a spreadsheet which calculates the heat loss through a pipe and also heat loss when insulated, I am using the resistive analogy to calculate this and I have it working, the only problem I am having is the heat transfer coefficient, how do I calculate this?

I know the pipe diameter, thickness, K value, temperatures inside and ambient and the insulation thickness, k value and diameters.

it is just for general use, to get an estimate and save time.
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Travis_King
#2
Jun25-12, 01:24 PM
P: 841
http://en.wikipedia.org/wiki/Heat_transfer_coefficient

See "heat transfer coefficient of pipe wall"
Your insulation should have a spec which indicates it's 'h'
evol1
#3
Jun25-12, 05:02 PM
P: 2
Brilliant, thanks Travis_king


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