19 Nov
1999
19 Nov
'99
2:33 a.m.
>> >> P.S.: When designing a new cooler
element/radiator, keep in mind that
>> >> silver is a way better thermal conductor than Al or Cu.
>It's a simple design, operating just on water,
and always around
>room temperature - and I pushed an K6-2 300 up to 500 MHz...
>(Of course copper would also be ok ... I just compared the price,
>and for less than 50 bucks difference I got a cool silver thingy :)
With a cooler that is chip/plate/water don't you
want to keep the "plate"
as thin as possible?
Jep, since phi = lambda*S*delta-T / delta . Just, I didn't use a
simple plate and only one waterlayer, but rather a system of pipes
(drilled holes) to have a) a better controll for the water flow and
b) enlarge the plate / water contact by three. As larger the
surface (S) as higher the possible thermal current (vulgo amount
of transported heat). I can't enlarge the chips surface, so S is
fixed between chip and 'plate', but I can enlarge S between 'plate'
and water.
The minimal thickness is defined by your tools and skills - I used
0.8 mm (~1/30 inch) as minimal thickness betreen one pipe and the
chip.
Gruss
H.
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Ich denke, also bin ich, also gut
HRK