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Phase outside (unheated)

post #1 of 20
Thread Starter 
Does anyone keep their phase coolers in a separate unheated garage or shed? I was just wondering if gets too cold, is there anything I would have to worry about?
I would say at worst it gets to 19f in the winter, or about -7 Celsius.
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post #2 of 20
should be fine A/C units hang out of peoples windows year round and they are basically the same thing.
post #3 of 20
Thread Starter 
Quote:
Originally Posted by redhat_ownage View Post
should be fine A/C units hang out of peoples windows year round and they are basically the same thing.
That's what I was figuring, but they probably don't turn them on when it's below freezing .
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post #4 of 20
if you gonna be cooling a computer with it at 19F ambients then i suggest you turn off the condenser fan till it warms up a little.
im not sure what would happen if the freon freezes in the tubes, but i doubt it would.
post #5 of 20
Good news everybody! I am in the middle of doing this exact experiment.

I built a phase change unit with a 10ft long suction line. It has a 1hp rotary compressor and an oversized 2' x 1' x 6" condenser. I built it several months ago in the middle of winter. I have been using it inside to keep my room warm. In a few weeks, when heat isn't needed anymore, the unit will go outside.

The two main challenges of making an outdoor phase change unit is building a weatherproof enclosure and regulating the condenser temperature. My enclosure is a furniture grade wooden case with multiple coats of marine grade varnish. The condenser is cooled by a 1500 cfm blower with thermostat. If everything goes as planned, this phase change unit should be able to run in all weather at any temperature.

I'll post back here with results and pictures once everything is set up outside.

Edit: Also, getting the condenser too cold causes the freon to decrease volume so much that there isn't enough freon for the compressor to compress into liquid. This can be solved by adding more freon-- however, once the weather warms up the freon will expand and overpressurize the system.
Edited by sparkplug188 - 3/16/11 at 12:56am
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post #6 of 20
Are you talking about the one I built for you?
It should be fine but make sure its kept dry so it wont rust and also avoid a lot of heat in the summer.

Why are you storing it?
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post #7 of 20
Thread Starter 
I plan to use it, just in an unheated area.

So I should be able to turn it on when it's cold just fine?
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post #8 of 20
yes cold wont be an issue but summer heat will be.
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post #9 of 20
Thread Starter 
How much heat? It doesn't get very hot here.
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post #10 of 20
It was tuned for 75 to 80 for inside the house use. I am not sure but I would suspect temps warmer than 80 will cost some in performance and dont bench it when the temp is over 95.
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