Forum: Geothermal & Heat Pumps
06-04-15, 10:36 PM
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Replies: 220
Views: 141,411
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Forum: Geothermal & Heat Pumps
06-04-15, 06:50 AM
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Replies: 220
Views: 141,411
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Forum: Geothermal & Heat Pumps
06-03-15, 10:38 PM
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Replies: 220
Views: 141,411
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Forum: Geothermal & Heat Pumps
06-03-15, 10:14 PM
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Replies: 220
Views: 141,411
To be honest, unless the coil surrounding the...
To be honest, unless the coil surrounding the compressor is pretty much bonded to the shell it's doing almost nothing for you. Radiant heat from the shell will superheat the gas in the pipe which...
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Forum: Geothermal & Heat Pumps
06-03-15, 02:20 AM
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Replies: 220
Views: 141,411
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Forum: Geothermal & Heat Pumps
05-11-15, 02:21 AM
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Replies: 25
Views: 19,061
Most of you have seen these before.
...
Most of you have seen these before.
http://www.fnarfbargle.com/private/120310-HX3/IMG-20120310-00025.jpg
http://www.fnarfbargle.com/private/120310-HX3/IMG-20120310-00026.jpg...
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Forum: Geothermal & Heat Pumps
05-08-15, 03:07 AM
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Replies: 25
Views: 19,061
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Forum: Geothermal & Heat Pumps
05-06-15, 11:31 PM
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Replies: 25
Views: 19,061
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Forum: Geothermal & Heat Pumps
02-05-13, 07:58 PM
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Replies: 57
Views: 39,397
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Forum: Geothermal & Heat Pumps
01-30-13, 06:25 PM
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Replies: 57
Views: 48,721
I've used Randen's method before (do it...
I've used Randen's method before (do it outside!).
When I was looking for a very hard to find leak on my system, I ended up trawling the bubble blowing forums for the best bubble mixture. Plain...
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Forum: Geothermal & Heat Pumps
01-16-13, 06:37 AM
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Replies: 55
Views: 37,959
Coolpack is *brilliant*. Nothing more to say. ...
Coolpack is *brilliant*. Nothing more to say.
Most of my tinkering is done with the straight single stage DX simulation.
It allows me to plug in the numbers I know (or want) and it'll tell me the...
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Forum: Geothermal & Heat Pumps
01-09-13, 11:24 PM
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Replies: 55
Views: 37,959
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Forum: Geothermal & Heat Pumps
01-08-13, 04:45 AM
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Replies: 6
Views: 7,366
As an Australian, any sleight on the French is...
As an Australian, any sleight on the French is humorous you silly Kniggit. Why do you think I have this outraaaaaegous accent ?
Let's look at it this way. Calculate the volume of the evaporator...
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Forum: Geothermal & Heat Pumps
01-07-13, 05:17 PM
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Replies: 64
Views: 28,758
Not with propane it won't. You need propylene...
Not with propane it won't. You need propylene (the stuff in the yellow bottles). It has just enough extra oomph to allow you to braze. Personally I use either 15% silver rod for copper to copper or...
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Forum: Geothermal & Heat Pumps
12-20-12, 08:03 AM
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Replies: 55
Views: 37,959
Not that surprised. There's been a *lot* of...
Not that surprised. There's been a *lot* of interesting stuff cruise past recently. It's easy to fly under the radar.
I've had a number of people tell me I'm mad and it will never work. Not...
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Forum: Geothermal & Heat Pumps
03-20-12, 07:59 PM
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Replies: 55
Views: 37,959
Using handwaving generalities, a compressor is...
Using handwaving generalities, a compressor is driven by a synchronous motor. Within small tolerances, it rotates the same number of times per second. The power consumed is directly related to how...
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Forum: Geothermal & Heat Pumps
03-17-12, 09:18 PM
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Replies: 7
Views: 18,986
Yes. Don't do it.
Nylog is made from...
Yes. Don't do it.
Nylog is made from refrigeration oil. Blue is synthetic, Red is mineral. You have no idea what the carrier is for the Teflon goop, and what it might do when it contacts...
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Forum: Geothermal & Heat Pumps
03-09-12, 08:24 AM
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Replies: 1,943
Views: 4,854,413
Convenience rather than efficiency. Nobody...
Convenience rather than efficiency. Nobody condenses at temperatures low enough to really maximise efficiency.
Look at it this way. If your condenser needs to be about 5.5x the size of your...
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Forum: Geothermal & Heat Pumps
03-08-12, 07:24 AM
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Replies: 1,943
Views: 4,854,413
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Forum: Geothermal & Heat Pumps
03-01-12, 04:37 AM
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Replies: 1,943
Views: 4,854,413
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Forum: Geothermal & Heat Pumps
03-01-12, 02:38 AM
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Replies: 1,943
Views: 4,854,413
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Forum: Geothermal & Heat Pumps
02-19-12, 05:53 PM
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Replies: 40
Views: 42,356
R407C is a blend of three HFC refrigerants...
R407C is a blend of three HFC refrigerants designed to give it properties similar to R22. Given it's HFC the oil is likely to be POE.
HC's will work with POE oil, however it is mightily...
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Forum: Geothermal & Heat Pumps
02-17-12, 11:17 AM
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Replies: 40
Views: 42,356
If I had to offer extra advice, I'd re-iterate...
If I had to offer extra advice, I'd re-iterate point 2 about 4 times. Go down to the local safety shop and buy 2 pairs of safety glasses. Buy a tinted pair for in the sun work, and a clear pair for...
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Forum: Geothermal & Heat Pumps
02-17-12, 02:04 AM
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Replies: 40
Views: 42,356
You would do well to read the Manifesto....
You would do well to read the Manifesto. AC_Hacker goes into a great deal of gory detail about how these things work, and how you might modify them. It's a very long read from end to end, but I...
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Forum: Geothermal & Heat Pumps
02-16-12, 11:17 PM
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Replies: 40
Views: 42,356
A couple of things.
Propane is not a drop in...
A couple of things.
Propane is not a drop in for R134a. It has quite a bit higher pressure and finds weaknesses in systems quite quickly. A 60/40 mix of Propane/Iso-Butane gives about the same...
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