removing parts from PCBs

[Chuck Guzis]

On 11/15/2005 at 3:36 PM woodelf wrote:


>So what is wrong with cheap water?  I guess - inert - says it all.

Well yes, but remember that Honeywell tinkered with direct water cooling a
bit back in the 70's.  I think they used a copper diaphragm between the
water and the chip to conduct heat.  I know they had problems with algae
growing in the tubing and that certain algicides had the problem of
corroding copper.  IIRC, this was an ECL implementation of an earlier
machine that didn't do much better than 1.5x the original in performance.
As a product, a disaster.

Here's a paper on direct immersion cooling:

http://www.electronics-cooling.com/Resources/EC_Articles/MAY96/may96_04.htm

Cheers,
Chuck