PDA

View Full Version : a bong and the peltier. a NEW idea. (?)


maha_x
08-23-01, 02:22 AM
I was just thinking that if the bong waterfall effect can dissolve all the excess heat and bit more from the water, then could a Peltier be used to cool the water? Because of the waterfall, it would be like cooling still water with the Peltier. No external strains. If the water system was then isolated into some styrox etc. the ambient temp wouldnt strain the pelt either.

Anyone tried this out?

cjtune
08-23-01, 04:54 AM
The key disadvantage to using water chillers is that the larger the surface of water exposed to the ambient (simply by just having a large reservoir, or in your case, a waterfall), is that heat will creep back *in* to the WC setup.

I think you are suggesting to pre-cool the water before it reaches the pelt by means of evaporative cooling. That would be a good idea but keep in mind that the pelt is releasing its own waste heat as well as the waste heat of the CPU in the vicinity (CPU heat plus peltier heat) so try to direct the hot air away from the 'waterfall'.

Try it out and keep us informed! I could very well be the better water chiller solution but beware of condensation all the way from the pelt to the waterblock.

maha_x
08-24-01, 03:16 AM
Actually I came to think about this because the pelt I have is only 43W. So I tought if I could remove the 70W of my CPU with BONG and add that 43W of cooling ontop. This should (theoretically) result in 113W of cooling. This has the ambient heat with all the surface of the reservoir coming in, so Id put the reservoir into some styrox (is it even that in English?).

It'll take some time as I have to design and build the BONG. I have the reservoir and the pump and the block.

The reservoir is constructed of a foot tall ~4-5inch wide stainless steel tube. It has its top open and bottom welded close. So I could put the Pelt against the bottom, and the pelt&reservoir could stand on a large heatsink w/ fan. I cant work a hole to the reservoir, so I tought Id just put a fan on top of it blowing in, and build an exit route for the air out of some cardboard (or something watertight :) ).

Anyways, Ill post the results as soon as I have something to show.