Team RCC's Heavyweight Bullfrog. Goto page Previous1, 2, 3
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maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
Not using water , but a non electrical conductive, no corrosion promoting liquid.
For weight. Take a 10 kg fine finned piece of ali, and you still get about half of the heat transfer/sink capacity of our 1 liter liquid heatsink.
Thu Aug 18, 2016 7:47 pm
Spockie-Tech Site Admin
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
Mm, fluoronert or similair ?
You could immerse the whole ESC if you made the case fluid tight.. wirexs would be a pain though. And for intermittent duty equip like robot ESC's you dont need the constant radiating ability, just a 5 minute heat absorption capability.. as Im sure you know. Interesting. _________________ Great minds discuss ideas. Average minds discuss events. Small minds discuss people
Thu Aug 18, 2016 9:47 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
I think Mario is using the liquid heatsink to warm up the gas system, not cool down an ESC. It would be interesting to see if the system could do both things - attach a CPU cooler to the ESC and copper coils around the drive motors, then dump all the excess heat into the buffer tank or the ram. Very Heath Robinson, but fun _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Thu Aug 18, 2016 9:56 pm
maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
The liquid heatsink does 1 thing. Getting heat in the CO2 running to the buffertank, to avoid more chiil down and powerloss.
Fri Aug 19, 2016 12:36 am
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
I wouldn't want to run CO2 near the ESC's that sudden chill down would cause you lots of problems (+80C then -20C cycles may be bad). A block of wax or something with a ~30C melting point would perhaps put a bunch of heat of formation into the buffer without trying *too* hard, some heat pipes might be needed though _________________ Mechanical engineers build weapons, civil engineers build targets
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