Liquid cooling medium advice

[Radio Wrangler]

The key is to twiddle the design to use several trransistors in parallel with split resistors for current sharing. This way you spread the heat out well and components are kept in their comfort zones.

I presume you'll use something running in Class-B during the summer months?

David

[threeseven]

Originally Posted by dave cox

I think these are the tunnel type sinks mentioned by herald1360. Probably about as good as it gets for air cooled !!

dc

Thats standard avionics practice, also used in high power linear lab PSU's

[fetteler]

Originally Posted by Radio Wrangler

OK, time to take a sideways view:

Liquid cooling is valuable in high performance overclocked PCs because a lot of heat is dissipated in a small space... and it has to be small because you need to keep things close together at that speed.

As we don't have golden ears capable of over a GigaHertz, then we can spread things out a fair bit.

The water cooling would need to eventually dump the heat out in a radiator, so you need to have the radiating surface area to put the heat into the air anyway.

So you can cut out the middle man, the liquid, and spread your dissipation amongst a number of transistors on heatsinks, it's not going to be any bigger than the radiator you'd need, and it won't make life-threatening messes on the carpet.

Spreading the heat across a number of transistors will keep their junction temperature down and help reliability.

David

David, you are absolutely correct - could not have put it better - my thoughts exactly

Cheers,
Steve

[broadgage]

Water cooled heat sinks are widely available being used by those who modify computers for higher clock speeds.
If desired, even more heat may be removed by chilling the water to say 5 degrees, this being fairly easily achieved with a draught beer cooler.
By extending the pipes, the beer cooler may be put outdoors (under shelter from rain) thereby removing the heat from the room not just from the equipment.