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Search: Posts Made By: Ko_deZ
Forum: Geothermal & Heat Pumps 06-19-12, 02:40 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
Although CO2 is in some situations are much more...

Although CO2 is in some situations are much more efficient than the alternatives, the very high pressure it demands seem to be a reason for people not using it much. 4400 psi is quite a lot, and both...
Forum: Geothermal & Heat Pumps 03-23-12, 10:59 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
No problem AC, I am trying have a look here now...

No problem AC, I am trying have a look here now and again in case of any questions or remarks. Hope you get all the issues dealt with.
Forum: Geothermal & Heat Pumps 03-23-12, 10:45 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
Then Vlad, we are in agreement, larger heat sinks...

Then Vlad, we are in agreement, larger heat sinks is always more efficient than small ones (given the right pressures). I must have misread your earlier posts.
Forum: Geothermal & Heat Pumps 03-23-12, 07:38 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 03-13-12, 04:56 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
Vlad, I think you are mistaking customers to be...

Vlad, I think you are mistaking customers to be properly intelligent and efficiency focused. That is not the case as any marketing person will tell you. A good design and good reputation of...
Forum: Geothermal & Heat Pumps 03-11-12, 08:47 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
I have never used the 1 wire temperature sensors,...

I have never used the 1 wire temperature sensors, so that is the main reason for not choosing those. Yeah, and the fact that I had all of these things around.

If you wish to change to 1 wire...
Forum: Geothermal & Heat Pumps 03-09-12, 02:59 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 02-28-12, 04:11 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 02-27-12, 11:25 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 12-23-11, 03:03 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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.
...
Forum: Geothermal & Heat Pumps 12-23-11, 02:34 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 11-03-11, 01:25 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 11-03-11, 05:35 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 08-25-11, 03:03 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
Allright guys. Having some issues with my camera,...

Allright guys. Having some issues with my camera, so no pictures of the HXs. I will provide contact details though:

www.hrale.com (http://www.hrale.com)
zhuojq@hrale.com <-- Ask for Jason. Say...
Forum: Geothermal & Heat Pumps 08-22-11, 05:09 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 08-01-11, 01:37 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
@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,...
Forum: Geothermal & Heat Pumps 07-31-11, 03:33 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 07-30-11, 02:25 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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,...
Forum: Geothermal & Heat Pumps 07-28-11, 07:48 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
@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...
Forum: Geothermal & Heat Pumps 07-28-11, 07:18 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 07-25-11, 03:47 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
@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....
Forum: Geothermal & Heat Pumps 07-07-11, 06:55 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 07-07-11, 04:01 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 07-03-11, 06:08 PM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Forum: Geothermal & Heat Pumps 07-03-11, 04:04 AM
Replies: 1,943
Views: 3,656,026
Posted By Ko_deZ
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...
Showing results 1 to 25 of 29

 
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