Forum: Geothermal & Heat Pumps
06-19-22, 05:40 AM
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Replies: 4
Views: 46,549
We have on roof PV, which keeps out a lot of...
We have on roof PV, which keeps out a lot of heat. We also have mvhr, which automatically heat excahnges or bypasses- it doesn’t handle huge amounts of air though. We keep windows closed on hot...
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Forum: Geothermal & Heat Pumps
06-15-22, 03:52 PM
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Replies: 4
Views: 46,549
Hi Phil
I’m sure it’s something you could do,...
Hi Phil
I’m sure it’s something you could do, there’s lots of different kit out there though - if you’re buying new is there anything you can use directly?
There are several small capacity (700W...
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Forum: Geothermal & Heat Pumps
04-02-22, 04:31 PM
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Replies: 16
Views: 38,570
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
03-30-22, 10:48 AM
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Replies: 2
Views: 17,124
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Forum: Conservation
03-08-22, 03:37 AM
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Replies: 22
Views: 69,050
External heat sources like monobloc ashp, or...
External heat sources like monobloc ashp, or pipes that might freeze up, could be protected from frost damage with an anti freeze valve. Its just a valve at the lowest point in the plumbing, that...
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Forum: Wind Power
03-02-22, 05:06 AM
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Replies: 7
Views: 23,840
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Forum: Geothermal & Heat Pumps
02-16-22, 10:28 AM
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Replies: 16
Views: 38,570
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, 08:00 AM
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Replies: 16
Views: 38,570
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Forum: Geothermal & Heat Pumps
01-03-22, 11:04 AM
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Replies: 16
Views: 38,570
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, 11:21 AM
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Replies: 16
Views: 38,570
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, 06:57 AM
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Replies: 16
Views: 38,570
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: Conservation
07-26-21, 09:17 AM
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Replies: 575
Views: 1,306,726
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Forum: Conservation
07-22-21, 02:11 AM
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Replies: 575
Views: 1,306,726
We have a commercial mvhr which gives good...
We have a commercial mvhr which gives good efficiency of 90%. It’s got plastic sheets as the counterflow heat exchanger, as they're more efficient than metal. The fans are dc speed controlled. ...
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Forum: Geothermal & Heat Pumps
07-20-21, 08:40 AM
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Replies: 16
Views: 38,570
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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