Forum: Geothermal & Heat Pumps
05-31-15, 03:04 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
12-09-13, 07:39 PM
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Replies: 1,943
Views: 4,653,421
How big is the A/C unit you're planning to...
How big is the A/C unit you're planning to modify? At some point like 1.5x-2x the rating, it gets to the point of diminishing returns. It certainly won't hurt except for making the unit bigger and...
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Forum: Geothermal & Heat Pumps
12-09-13, 05:27 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
12-08-13, 12:50 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
12-08-13, 11:29 AM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
12-02-13, 02:01 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
12-01-13, 10:27 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
10-27-10, 09:00 AM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
10-26-10, 10:02 PM
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Replies: 1,943
Views: 4,653,421
Once defrost is over, the heat pump will then...
Once defrost is over, the heat pump will then have to run a little longer, but it would still be more efficient than using heat strips. You can wire a relay to drop the fan speed to low so the cool...
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Forum: Geothermal & Heat Pumps
10-25-10, 11:02 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
01-03-10, 11:34 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
01-03-10, 11:29 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
01-03-10, 04:18 PM
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Replies: 1,943
Views: 4,653,421
It's also possible to use copper tubing in PEX...
It's also possible to use copper tubing in PEX tubing or coils of copper tubing in a piece of PVC pipe. In the case of the PVC pipe, design it to swirl the water for better heat transfer and make at...
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Forum: Geothermal & Heat Pumps
12-18-09, 12:56 PM
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Replies: 1,943
Views: 4,653,421
Except for the "HVAC girl" I talked about...
Except for the "HVAC girl" I talked about previously, HVAC engineers tend to be hostile to amateurs. They often claim stuff about safety, but that is a very weak argument since automotive repair is...
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Forum: Geothermal & Heat Pumps
10-31-09, 09:29 AM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
10-30-09, 11:35 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
10-09-09, 02:44 PM
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Replies: 1,943
Views: 4,653,421
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Forum: Geothermal & Heat Pumps
09-22-09, 06:33 PM
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Replies: 1,943
Views: 4,653,421
Vacuum on the Cheap - Refrigeration Compressors...
Vacuum on the Cheap - Refrigeration Compressors (http://www.belljar.net/refrig.htm)
So it looks like it is possible to build a good vacuum pump from refrigeration compressors. Just get two and not...
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Forum: Geothermal & Heat Pumps
09-18-09, 07:32 PM
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Replies: 1,943
Views: 4,653,421
I actually used an incandescent lamp to warm...
I actually used an incandescent lamp to warm various parts of the plumbing during the second and third vacuum pull. I actually have a sight glass with moisture indicator, which indicated that it was...
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Forum: Geothermal & Heat Pumps
09-07-09, 07:26 PM
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Replies: 1,943
Views: 4,653,421
Sam's Laser FAQ - Vacuum Technology for...
Sam's Laser FAQ - Vacuum Technology for Home-Built Gas Lasers (http://repairfaq.org/sam/lasercva.htm#cvacvs5)
I don't have a gauge that can precisely measure the vacuum level, but it pulls as low as...
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Forum: Geothermal & Heat Pumps
09-06-09, 09:34 PM
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Replies: 1,943
Views: 4,653,421
I'll share my experience with refrigeration...
I'll share my experience with refrigeration relating to a research project I did about refrigerating CPUs for higher performance.
Before doing anything else, research. It is very important if you...
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