Cooling and leaks; was: removing parts from PCBs ?JUNK MAIL? 4
Dwight K. Elvey
dwight.elvey at amd.com
Mon Nov 21 19:37:50 CST 2005
>From: "Doc Shipley" <doc at mdrconsult.com>
>Chuck Guzis wrote:
>> On 11/21/2005 at 12:55 PM Eric J Korpela wrote:
>>>The drawbacks of this system are that you need to prime it, and that a bad
>>>enough leak will disrupt the coolant flow, so you need to monitor the flow
>>>rate or have a decent thermal shutdown mechanism. You need that in case of
>>>pump failure, anyway.
>> Why not simply use a standard sump pump? Most such pumps can push a 15 or
>> 20 foot head and don't need to be primed.
> I think that putting the computer higher than the pump can push is
>the point. If the computer's on the low-pressure side of the circuit,
>(the pump is *pulling* water through instead of *pushing* ) it would
Not actually pulling. It would still be pushing but the
top part of the system would be siphoning. This means it has
negative pressure relative to the air.
>take a very large leak to get the system wet. It'll pull air into the
>water lines, instead of pushing water out into the electronics.
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