Forum: Geothermal & Heat Pumps
11-13-14, 11:46 PM
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Replies: 37
Views: 32,374
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Forum: Geothermal & Heat Pumps
11-09-14, 04:15 PM
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Replies: 37
Views: 32,374
Except components for such a small system are...
Except components for such a small system are nearly non existent. Compressor heat pump stuff is often available for less than scrap price. Also the ammonia needed is highly poisonous so that doesn't...
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Forum: Geothermal & Heat Pumps
11-09-14, 08:34 AM
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Replies: 37
Views: 32,374
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Forum: Geothermal & Heat Pumps
11-08-14, 11:23 PM
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Replies: 37
Views: 32,374
Anybody ever build a natural gas heat pump?
So I've been thinking lately...
What if you take an automotive style A/C compressor, and drive it with a natural gas powered engine? Then, capture the waste heat from the engine.
From what I...
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Forum: Geothermal & Heat Pumps
11-08-14, 06:10 AM
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Replies: 6
Views: 6,558
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Forum: Geothermal & Heat Pumps
11-06-14, 12:15 AM
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Replies: 34
Views: 29,110
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Forum: Geothermal & Heat Pumps
11-03-14, 11:44 PM
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Replies: 34
Views: 29,110
Turning a window unit into a mini split?
I have an office I am trying to build an approximately 10k BTU heat pump for. I've been wanting to do a simple backwards air conditioner, but I'm running into more problems than I would like in my...
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Forum: Geothermal & Heat Pumps
11-02-14, 06:46 PM
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Replies: 31
Views: 22,559
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Forum: Geothermal & Heat Pumps
11-01-14, 04:01 AM
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Replies: 31
Views: 22,559
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Forum: Geothermal & Heat Pumps
10-31-14, 03:00 PM
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Replies: 31
Views: 22,559
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Forum: Geothermal & Heat Pumps
10-31-14, 06:46 AM
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Replies: 31
Views: 22,559
Looks like it's definitely an air flow thing. I...
Looks like it's definitely an air flow thing. I pointed a desk fan at the evaporator and it ran for several hours in similar temperatures and never froze up. Still going to hook up a frost sensor......
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Forum: Geothermal & Heat Pumps
10-30-14, 11:20 PM
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Replies: 11
Views: 10,023
I'm no expert, but...
Yep. I did...
I'm no expert, but...
Yep. I did something very basic like this several years ago with a window unit. Basically pumped pool water over the condenser and caught some of it to go back into the...
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Forum: Geothermal & Heat Pumps
10-29-14, 12:57 AM
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Replies: 13
Views: 13,631
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Forum: Geothermal & Heat Pumps
10-29-14, 12:55 AM
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Replies: 9
Views: 10,881
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Forum: Geothermal & Heat Pumps
10-28-14, 04:27 AM
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Replies: 9
Views: 10,881
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Forum: Geothermal & Heat Pumps
10-26-14, 06:20 PM
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Replies: 31
Views: 22,559
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Forum: Geothermal & Heat Pumps
10-26-14, 01:00 AM
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Replies: 31
Views: 22,559
Reverse air conditioner freeze up problem
I'm experimenting with a 5000 BTU window air conditioner to heat a small work room in my shop. The "outside" part is in the bigger area of my shop where it was 57 degrees. I put the temperature...
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Forum: Geothermal & Heat Pumps
10-25-14, 07:25 AM
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Replies: 10
Views: 10,075
That does not mean that an intelligent, non...
That does not mean that an intelligent, non electrician person can not safely and correctly do electrical work, but some electricians will lead you to believe that. The fact is it is perfectly legal,...
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Forum: Energy Storage
10-25-14, 02:08 AM
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Replies: 5
Views: 15,356
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Forum: Geothermal & Heat Pumps
10-24-14, 09:44 PM
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Replies: 10
Views: 10,075
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Forum: Geothermal & Heat Pumps
09-23-14, 03:26 AM
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Replies: 22
Views: 14,081
How about this, where does the heat from the...
How about this, where does the heat from the compressor motor end up going? I never thought about that before, but my 8000BTU unit uses around 800 watts. That's 2700 BTU! Is all (most) of that heat...
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Forum: Geothermal & Heat Pumps
09-22-14, 04:12 PM
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Replies: 3
Views: 4,572
Seems like some misinformation here.
...
Seems like some misinformation here.
Even a big diesel generator is lucky to make 12 kilowatts from a gallon of diesel fuel. If diesel cost $6 like they say, that's 50 cents/kilowatt hour.
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Forum: Geothermal & Heat Pumps
09-22-14, 03:55 PM
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Replies: 22
Views: 14,081
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Forum: Geothermal & Heat Pumps
09-21-14, 11:39 PM
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Replies: 22
Views: 14,081
I read something about purging with nitrogen...
I read something about purging with nitrogen after brazing joints. Is this completely necessary?
I'm going to find a bigger/better A/C unit while they are plentiful. Mine also needs a new fan...
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Forum: Geothermal & Heat Pumps
09-21-14, 03:26 AM
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Replies: 22
Views: 14,081
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