Evaporator material

[XC] gomeler · 02-09-2006, 06:50 PM

Are there any rules of sorts into the thickness of the base on an evaporator? I'm considering brazing 4 descending size copper end caps from 2" down to .5" diamter onto a 3/4" thick piece of copper. I was hoping that the thick copper base would help with idle to load temperature flucuations, but is 3/4" too thick? Otherwise I'm stuck with using some 1/8"-1/4" copper. Trying to do this build up correctly, first one had issues with flexline and terrible evap design.

jinu117 · 02-09-2006, 08:28 PM

1/4th... 3/4th is going to get you awful temp... (cold evap warm cpu)

[XC] gomeler · 02-09-2006, 08:54 PM

bummer, I thought it would have been a good idea, oh well. Would have made it easy to drill a plug in for a temp probe too. Back to using the end caps.

pocketbikeuk · 02-10-2006, 01:07 AM

Quote:

Originally Posted by gomeler

bummer, I thought it would have been a good idea, oh well. Would have made it easy to drill a plug in for a temp probe too. Back to using the end caps.

why not just grind down the 3/4 block or cut a section out the middle leaving about a 6m base in the centre? can easily be done with a drill press

SoddemFX · 02-10-2006, 03:40 AM

Adding 10mm of additional base thickness to a 40mm diameter copper evaporator will increase the temperature of the base by 4K at 200W. This is assuming even distribution of loads but it wont be far off...

Tom