Perry mentioned he wanted an introduction to thermodynamics
and I recommended Marks' Standard Handbook For Mechanical Engineers.
Unfortunately Marks is a good introduction to thermo theory it stops
short of what he really wants to know about heat exchangers.
The other book you need Perry is "Compact Heat Exchangers" by Kays and London.
Krieger Publishing Company. Not exactly elementary but it is the bible
on heat exchangers.
Paul Lamar
Does it discuss surface radiators at all? That is my interest at the moment.
Perry
Well it gets down to the nitty gritty were it discusses the heat transfer
from a metal plate to the air on a micro level. It also investigates boundary layer
build up. Fred Moreno also mentioned this a few years ago on here.
If you see a rad with fins that look like fig. e it has particularly low
aerodynamic drag and is particularly good from a heat transfer point of view.
Much lower drag than the more common louvered fins. This is due to the low boundary
layer build up on the surface of the fins. Only a few companies make them and
they are more expensive. Might be a good thing for you to try.
I also reread an SAE paper Honda wrote and they said the wall thickness
of the coolant tube was very important but it was hard to keep if from corroding
through. They were talking about tube wall thicknesses of .2 mm or about
.008 inches if my arithmetic is correct. O too thin :) Never work
for a 90 psi Mazda oil cooler.
BTW when are you leaving for OSH? Barny mentioned you were coming. I am
leaving tomorrow so the newsletter will be shut down for about a week.
Paul Lamar
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