Quote:
Originally posted by Phant0m51
Anybody ever see a cup of water in a vacuum? It boils, then freezes (if the pressure is pulled out fairly slow). Is there any way we could use vacuum's (not a Hoover, but a lack of matter in space) to cool our systems? Maybe put your radiater inside of an almost air-tight bubble and suck air out of it? I have no idea if this would work or not (probably not) but it's an idea. Theoretically you could have no fans in your case, just 2 pumps. 1 pump for the water, the other for sucking the air out of this 'bubble'.
I don't even know if it's possible to do, What do you guys think?
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I think it's a wacky idea.
Let's put aside the question of how you'd create the vacuum in the first place. Last I checked, vacuum pumps aren't cheap.
The system would need to be perfectly sealed, otherwise you'd have to have a pump to maintain the vacuum. I don't believe that our standard barbs and hose connections would do the job, but an o-ring gasket should be OK. Assuming that the tubing doesn't collapse, you'd have to deal with finding a pump whose housing is meant to handle a low pressure.
I believe that we tackled and calculated the benefit before, and it was not significant enough, and certainly didn't warrant the expense.
But you're talking about sealing the rad, not the loop.
In that case, the heat couldn't escape the radiator through convection anywhere near as effectively, which leaves the heat to escape by radiation. Radiated heat is the least efficient way of getting heat out of a system. If you work for NASA, you know the problems associated with it (radiated heat is the only way to cool a system, in space).
Keep at it:something will come
