Forum: Geothermal & Heat Pumps
04-02-22, 03:31 PM
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Replies: 16
Views: 21,579
Looking harder at the compressor datasheet, it...
Looking harder at the compressor datasheet, it has 3 possible starter configurations. And one of them is slightly higher efficiency - not a lot, but I'm chasing anything I can get here! This new...
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Forum: Geothermal & Heat Pumps
04-02-22, 11:42 AM
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Replies: 16
Views: 21,579
I have tried an addon beefy 200J 10R NTC to...
I have tried an addon beefy 200J 10R NTC to decrease the startup inrush, to prevent my fuse from blowing again. And the behaviour was really not what I would have predicted. I actually have 2...
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Forum: Geothermal & Heat Pumps
03-21-22, 10:04 AM
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Replies: 16
Views: 21,579
After about 100 days of operation, and around...
After about 100 days of operation, and around 2000 startups, the 5A input fuse blew. The compressor takes a lot of current on startup, almost 30A peaks(pic), and I calculated an I2t of around 65A2s,...
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Forum: Geothermal & Heat Pumps
02-16-22, 09:28 AM
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Replies: 16
Views: 21,579
I started off with a fire extinguisher that...
I started off with a fire extinguisher that somebody gave me. Don't do that though, it was a mistake on my part - there's all sorts of other rubbish in fire extinguisher gas, so it doesn't...
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Forum: Geothermal & Heat Pumps
02-16-22, 07:00 AM
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Replies: 16
Views: 21,579
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Forum: Geothermal & Heat Pumps
02-07-22, 09:05 AM
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Replies: 16
Views: 21,579
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Forum: Geothermal & Heat Pumps
01-23-22, 10:30 AM
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Replies: 16
Views: 21,579
6 week update:
We have had a colder spell...
6 week update:
We have had a colder spell here, and the heatpump has been working for longer periods. After running constantly for about 10 hours in the morning a week ago, it tripped out on...
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Forum: Geothermal & Heat Pumps
01-04-22, 02:21 AM
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Replies: 16
Views: 21,579
Hi Toby! Carnation WA seems a very similar...
Hi Toby! Carnation WA seems a very similar climate to Cambridge Uk, but with a lot more rain in winter which is good for gshp as it makes the ground more conductive. I recommend looking at the doc...
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Forum: Geothermal & Heat Pumps
01-03-22, 10:04 AM
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Replies: 16
Views: 21,579
I've just about finished my ground-source...
I've just about finished my ground-source heatpump project, it's installed and been running well for the last 3 weeks here - it provides all the heating for our house now, and the gas boiler has been...
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Forum: Geothermal & Heat Pumps
09-12-21, 10:21 AM
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Replies: 16
Views: 21,579
I've run the rig a few times now logging data,...
I've run the rig a few times now logging data, and analysed the data a bit better now, taking into account losses of the 27litre water tank to air - I did this by only running the circulation pump...
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Forum: Geothermal & Heat Pumps
09-10-21, 05:57 AM
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Replies: 16
Views: 21,579
I finished the heatpump build, pressure tested...
I finished the heatpump build, pressure tested with CO2, vacuumed it & filled it with propane, then turned on the heatpump for the first time yesterday!
I charged it with the pump on, aiming for...
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Forum: Geothermal & Heat Pumps
07-20-21, 07:40 AM
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Replies: 16
Views: 21,579
DIY W2W heatpump
We now have a relatively well insulated house in the UK, needing a peak of 1.5kW over the last year to keep it warm in the coldest of weather. That would be 1.5kW of heat continuously on for 24hours...
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