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bobo5195 · 04-04-2006, 04:17 PM

water oddly enough is near as good as it gets.

I would suggest that for your loop the correlation with fluids goes something like

h is directly proportional to (beta/ viscosity^2)^n * k

maybe

h is directly proportional to (beta/ (viscosity*alpha))^n * k

where symbols are for fluids being their normal things
0.25<n<0.333

EDIT - had so many questions on natural convection of late that i may have to write an artical with a program for it. Had to do a beasty paper (Reached 8500, still could of added more) on it so i've read up.

So if you have a fluid plug the numbers and that is how it will perform relative to water. Should be easy to do for something like FC77 (flourinert). There are other realtions that i could post if your interested.

You could get hard number if you wish by pluging the numbers for your setup with a known liquid (near pure water) and then seeing what changing the numbers does.

04-04-2006, 04:17 PM	#36
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	Re: LS7Corvette's passive peltier setup water oddly enough is near as good as it gets. I would suggest that for your loop the correlation with fluids goes something like h is directly proportional to (beta/ viscosity^2)^n * k maybe h is directly proportional to (beta/ (viscosityalpha))^n k where symbols are for fluids being their normal things 0.25<n<0.333 EDIT - had so many questions on natural convection of late that i may have to write an artical with a program for it. Had to do a beasty paper (Reached 8500, still could of added more) on it so i've read up. So if you have a fluid plug the numbers and that is how it will perform relative to water. Should be easy to do for something like FC77 (flourinert). There are other realtions that i could post if your interested. You could get hard number if you wish by pluging the numbers for your setup with a known liquid (near pure water) and then seeing what changing the numbers does.