Forum: Geothermal & Heat Pumps
03-24-19, 01:34 PM
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Replies: 14
Views: 29,699
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Forum: Geothermal & Heat Pumps
02-27-19, 03:49 PM
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Replies: 14
Views: 29,699
It could be controlled, but it seems to be not...
It could be controlled, but it seems to be not necessary. The secondary side is switched to minimum which is enough to transport the heat to accumulator tank. The primary side is switched to maximum,...
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Forum: Geothermal & Heat Pumps
02-19-19, 04:42 PM
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Replies: 14
Views: 29,699
There are three sequences controlled by the...
There are three sequences controlled by the software:
START:
- turn both circulation pumps ON
- close EEV by 500 steps, open EEV by 150 steps
- ramp compressor SSR up from 50% to 100% in 800ms...
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Forum: Geothermal & Heat Pumps
02-17-19, 10:42 AM
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Replies: 14
Views: 29,699
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Forum: Geothermal & Heat Pumps
02-16-19, 05:20 PM
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Replies: 14
Views: 29,699
In terms of time, it was almost one year of...
In terms of time, it was almost one year of development. Construction of the pump itself, when I had everything on table, took few days only, it went smooth, including refrigerant charging. In terms...
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Forum: Geothermal & Heat Pumps
01-19-19, 05:02 PM
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Replies: 14
Views: 29,699
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Forum: Geothermal & Heat Pumps
01-16-19, 05:35 PM
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Replies: 14
Views: 29,699
Thanks. COP is not measured yet. The built-in...
Thanks. COP is not measured yet. The built-in pulse flow meter is working, but is not calibrated yet. As soon as I do calibration by another flow meter, I will let the software calculate COP and will...
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Forum: Geothermal & Heat Pumps
01-16-19, 12:31 PM
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Replies: 14
Views: 29,699
few images...
few images, just for case the link above does not work
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Forum: Geothermal & Heat Pumps
01-16-19, 12:21 PM
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Replies: 14
Views: 29,699
NANOOK - open source DIY 19kW GWHP
Hi community, I just want to share my successful built of 19kW ground-water heat pump. It’s completely open source, incl. calculations, chassis drawing, schematics and control software.
Anybody who...
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Forum: Geothermal & Heat Pumps
01-16-19, 12:17 PM
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Replies: 5
Views: 8,718
pressure sensors
If I got it right, you don't have any pressure sensor in your system at all, right? To calculate superheat, I would recommend to install at least one pressure sensor on suction compressor side. I use...
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Forum: Geothermal & Heat Pumps
01-16-19, 11:43 AM
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Replies: 9
Views: 14,939
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Forum: Geothermal & Heat Pumps
01-16-19, 11:13 AM
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Replies: 14
Views: 14,407
The controller
Hi, just a small advice to the controller: for my DIY GWHP I run main controller process and management web console on NanoPi Duo board, which is Linux capable small board for few bucks. The software...
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Forum: Geothermal & Heat Pumps
01-16-19, 11:02 AM
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Replies: 1
Views: 4,787
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Forum: Geothermal & Heat Pumps
01-16-19, 10:58 AM
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Replies: 148
Views: 223,163
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