Quote:
|
Originally Posted by unregistered
wheeezzzt
Occam's razor
no LPorc, the math is there; go to a text on Heat Exchangers
|
Aside from my problems with integration, the math gives the answer at least as far as I have followed it However the math is a model used to predict behaviour. I can plug numbers into equations just as well as anyone else, I am looking for the concept behind the mathematical model. My forte is juggling concepts, not digits.
Actually, I think the integration is clouding my view. My math skills are quite rusty and I never did follow the subject very far post-Algebra. Instead of looking at it as ugly and painful math, I should look at it for what it represents.
Staring at the curves and thinking about it some more it is starting to make a little more sense. I hypothesize that a cross flow exchange is effectively a special case of parallel flow exchange. In our typical (or not so typical) single pass single thickness radiator with a relatively infinite supply of ambient air we've got an artificial case of cooling flow with a high specific heat, so we've just made clever use of what we have available. Each tube is essentially a parallel exchanger, and we have parallel flows in parallel, which still can't beat a counter flow in the same area of exchange.
Comments?