View Full Version : Phase change project - need advice.

21-06-2010, 04:46 PM

I am currently using a phase change CPU cooling system.

My current compressor and condenser is good for about 250 watts.

I am upgrading CPU's to a setup that will require upwards of 500 watts of cooling (possibly more).

I also want to run a 220v-240v compressor for power consumption reasons.

I was thinking about this setup:

Danfoss SC12G
A new 17" x 16" condenser and 12v fan from a BMW e36.

I figure my condenser should be able to shed up to 1500 watts.

This compressor says r143a, but is there a better choice?

Am I on the right track?



21-06-2010, 10:13 PM
Correction if I may, the compressor is rated for R134a and -35C evaporating temperature.

Don't forget to keep the compressor in the inlet side of the condenser fan and to pipe up the oil cooling circuit.

03-07-2010, 07:54 AM
What cpu are you going to use that puts out 500w ?
Most peeps when building for 300w+ would be charging with r507 when using in a single stage. It runs at high pressure though, so care needs to be taken.

16-07-2010, 09:41 AM
your thinking is really great and thanks for your post

16-07-2010, 10:06 AM
Will you dump 1500W of heat inside your office? Dont you think a outdoor unit will be better.. at least for summer use?

21-08-2010, 06:02 AM
wow... what a thought, a separate condenser sitting outside, right next to the house AC, just for the computer.

21-08-2010, 06:03 AM
also, 134a is the only refrigerant you can get without an EPA license.