Forum: Geothermal & Heat Pumps
06-19-12, 02:40 AM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
03-23-12, 10:59 AM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
03-23-12, 10:45 AM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
03-23-12, 07:38 AM
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Replies: 1,943
Views: 3,656,026
True, but that would be screwing up your...
True, but that would be screwing up your reputation. I was talking about the loads of companies that has a good reputation, and keeps it by delivering good quality systems. They do consider...
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Forum: Geothermal & Heat Pumps
03-13-12, 04:56 AM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
03-11-12, 08:47 AM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
03-09-12, 02:59 PM
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Replies: 1,943
Views: 3,656,026
Arduino code
Hi all
Sorry for the wait. I have only had an hour today, so I did not get to make it very nice or anything, but this should work. Tell me what you want in addition to this. If you do understand a...
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Forum: Geothermal & Heat Pumps
02-28-12, 04:11 AM
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Replies: 1,943
Views: 3,656,026
AC, that should be easy enough to do. Sparkfun...
AC, that should be easy enough to do. Sparkfun carries some current measurement devices, but what kind of pressure sensors would you use? Any other ideas?
Regarding SSR and electro-mechanical. The...
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Forum: Geothermal & Heat Pumps
02-27-12, 11:25 AM
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Replies: 1,943
Views: 3,656,026
Hi guys.
I have been very busy for a long...
Hi guys.
I have been very busy for a long time now. Regarding Arduino stuff, I said earlier that I could help out if someone needed it. I have yet to receive any questions, but still AC said that...
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Forum: Geothermal & Heat Pumps
12-23-11, 03:03 PM
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Replies: 1,943
Views: 3,656,026
Got the last pieces I need today, so not yet....
Got the last pieces I need today, so not yet. Currently running with a hot water heater. It is cold, but just around freezing, not like last year, when we had 20C below (40F?) for a month already.
...
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Forum: Geothermal & Heat Pumps
12-23-11, 02:34 AM
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Replies: 1,943
Views: 3,656,026
You are quite right. Parallel is better. The...
You are quite right. Parallel is better. The reason is simply that you avoid having possibly a full HX freeze up. The first one will always be colder than the second one. This is the same problem as...
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Forum: Geothermal & Heat Pumps
11-03-11, 01:25 PM
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Replies: 1,943
Views: 3,656,026
Hi.
I did a re-check, and the e-mail I have...
Hi.
I did a re-check, and the e-mail I have used is hralehx@gmail.com. Unsure what I posted earlier, but this e-mail address is a gmail address, so it being very slow to respond as undeliverable...
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Forum: Geothermal & Heat Pumps
11-03-11, 05:35 AM
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Replies: 1,943
Views: 3,656,026
From what I can see from the drawing, this...
From what I can see from the drawing, this geocoloumn will not be very efficient. The volume of dirt it is in close connection to is not very large compared to the size of the unit, and the way they...
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Forum: Geothermal & Heat Pumps
08-25-11, 03:03 PM
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Replies: 1,943
Views: 3,656,026
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Forum: Geothermal & Heat Pumps
08-22-11, 05:09 PM
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Replies: 1,943
Views: 3,656,026
Hi all.
Back with good news. That B3-32 unit...
Hi all.
Back with good news. That B3-32 unit is pretty much exactly what I ordered from this chinese factory. They take small orders, produce to specs (I did spec everything, from number of plates...
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Forum: Geothermal & Heat Pumps
08-01-11, 01:37 PM
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Replies: 1,943
Views: 3,656,026
@randen
Good to hear that theory fits with...
@randen
Good to hear that theory fits with the actual world =)
I would _strongly_ suggest one small thing. If you do not intend to have lower temperature indoors than the temperature in the loop,...
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Forum: Geothermal & Heat Pumps
07-31-11, 03:33 PM
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Replies: 1,943
Views: 3,656,026
After extensive searching, and finally through...
After extensive searching, and finally through some people I know, I have found a Chinese company that makes heat exchangers. Compared to dudadiesel, these guys can deliver a b3-32a 20 plate to a...
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Forum: Geothermal & Heat Pumps
07-30-11, 02:25 AM
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Replies: 1,943
Views: 3,656,026
Thank you AC.
For my part I know noone...
Thank you AC.
For my part I know noone directly affected, but several of my friends where really close to the blast, but naturally, in such a small country like ours (city of Oslo is 600k people,...
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Forum: Geothermal & Heat Pumps
07-28-11, 07:48 AM
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Replies: 1,943
Views: 3,656,026
@randen
You might know this already, but I...
@randen
You might know this already, but I will explain anyway in case someone reads this post. The reason for your high humidity is the temperature you get from your ground loop. I will try to...
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Forum: Geothermal & Heat Pumps
07-28-11, 07:18 AM
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Replies: 1,943
Views: 3,656,026
Regardig MAPP gas
Hi.
As MAPP is a trademark, not ever sold in Norway, and even the MAPP producer has closed down production, I had to get creative. I got in touch with one of our two large gas suppliers, and due...
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Forum: Geothermal & Heat Pumps
07-25-11, 03:47 PM
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Replies: 1,943
Views: 3,656,026
@Drake
That is given that the ground loop...
@Drake
That is given that the ground loop returns a high temperature, like at Randens place. Here the temperature would be maybe 13-14C in the summer, and for a deep well you would get about 7C....
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Forum: Geothermal & Heat Pumps
07-07-11, 06:55 PM
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Replies: 1,943
Views: 3,656,026
Allright, so I finally got my hands on a unit...
Allright, so I finally got my hands on a unit that I believe I can use. It is a R404a unit that has been used for a cold room in a bakery that went bankrupt. From what I can see from wikipedia, this...
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Forum: Geothermal & Heat Pumps
07-07-11, 04:01 PM
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Replies: 1,943
Views: 3,656,026
I suggest that you get a sheet of metal,...
I suggest that you get a sheet of metal, preferably aluminium, and solder zig-zag copper tubes to it, spaced about 30cm between. The aluminium sheet will spread the heat. I guess you only need a U...
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Forum: Geothermal & Heat Pumps
07-03-11, 06:08 PM
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Replies: 1,943
Views: 3,656,026
When designing a heat pump/AC, your goal is to...
When designing a heat pump/AC, your goal is to make a unit that will sell as much as possible. When the output doubles, so should the efficiency of the heat exchanger, in this example it goes from 9...
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Forum: Geothermal & Heat Pumps
07-03-11, 04:04 AM
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Replies: 1,943
Views: 3,656,026
That will work, but consider plate heat...
That will work, but consider plate heat exchangers instead of buffer tank on the cold side. That will give you a significant COP boost. Also, run in parallel to the heat pumps so that you don't get...
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