Forum: Geothermal & Heat Pumps
04-01-14, 12:19 AM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
03-31-14, 11:23 AM
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Replies: 77
Views: 51,947
But you can see what I mean, that the top half...
But you can see what I mean, that the top half could be easily separated from the bottom half, and a DIY mini-split could be created.
It is odd that the condenser impeller would be so noisy. But...
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Forum: Geothermal & Heat Pumps
03-31-14, 12:54 AM
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Replies: 77
Views: 51,947
I'm amazed at how much use and value you have...
I'm amazed at how much use and value you have gotten out of your hack!
Now, I think that one of those portable heat pumps would be an interesting hack.
I have a 12,000 BTU one I got for free...
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Forum: Geothermal & Heat Pumps
12-13-13, 12:44 PM
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Replies: 77
Views: 51,947
[QUOTE=jeff5may;33921]Read this article...
...
[QUOTE=jeff5may;33921]Read this article...
OK, I did read your article. In every instance in that article, when they are describing how the system works, they are using the term "refrigerant"...
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Forum: Geothermal & Heat Pumps
12-12-13, 08:06 PM
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Replies: 77
Views: 51,947
Are you sure that you are using the correct...
Are you sure that you are using the correct terms?
My understanding is that a refrigerant is exploited for it's phase-change characteristics.
This from Wikipedia:
In your example, you are...
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Forum: Geothermal & Heat Pumps
12-12-13, 09:34 AM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
12-08-13, 01:29 AM
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Replies: 77
Views: 51,947
Sounds like a hybrid system would work well in...
Sounds like a hybrid system would work well in this situation, with a modest ground loop being used when the air temperature gets cold enough that the COP drops. Then, you could switch into GSHP mode...
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Forum: Geothermal & Heat Pumps
11-14-13, 05:16 PM
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Replies: 77
Views: 51,947
Doing a COP analysis for a water-in-water-out...
Doing a COP analysis for a water-in-water-out heat pump is pretty straight forward, since you can work with a known volume of water and measure the before & after difference. You can also work with...
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Forum: Geothermal & Heat Pumps
05-26-13, 12:03 PM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
01-22-13, 09:15 PM
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Replies: 77
Views: 51,947
Very smart patch.
I do hope you used some...
Very smart patch.
I do hope you used some kind of gas to purge the lines before you brazed... otherwise, you get copper oxide flakes inside your system which can clog your orifice.
Best,
-AC
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Forum: Geothermal & Heat Pumps
12-04-12, 05:36 PM
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Replies: 77
Views: 51,947
I have noticed that in the units I have...
I have noticed that in the units I have disemboweled, the tubing has rubber 'chunks' put on the tubing in specific locations, presumably to dampen vibrations.
You might look into that. When I...
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Forum: Geothermal & Heat Pumps
11-25-12, 06:41 PM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
11-19-12, 12:31 AM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
11-15-12, 10:48 AM
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Replies: 77
Views: 51,947
Great going.
Heat for Thanksgiving will...
Great going.
Heat for Thanksgiving will certainly be appreciated!
Yeah, turning a scrap air conditioner into an efficient heating machine is truly a win for the DIY team.
From the beginning...
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Forum: Geothermal & Heat Pumps
11-03-12, 06:35 PM
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Replies: 77
Views: 51,947
Hey, glad you're making progress.
I used a...
Hey, glad you're making progress.
I used a MAP gas turbo torch, no oxygen, Silphos... worked good for me.
Whatever tool that works for you is the right tool.
Sounds like you are gaining all...
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Forum: Geothermal & Heat Pumps
10-27-12, 11:25 PM
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Replies: 77
Views: 51,947
OK, I misunderstood the history of the failure,...
OK, I misunderstood the history of the failure, but I disagree with your explanation of the mode of failure.
I seriously doubt that a properly brazed joint would exhibit a pinhole leak, even under...
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Forum: Geothermal & Heat Pumps
10-27-12, 05:38 PM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
10-26-12, 04:08 PM
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Replies: 77
Views: 51,947
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Forum: Geothermal & Heat Pumps
10-25-12, 12:19 AM
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Replies: 77
Views: 51,947
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