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Last seen: Nov 3, 2026
Indeed it is quite idiotic Many industries require pure hydrogen for chemical reactions, it is used in enormous quantities to make fertilizer, steel...
Interesting! I toyed with the idea too. But I installed a wood burning boiler with its enormous companion tank along with the heat pump, so I'm going ...
Note if you have a PV inverter and either sun or charged batteries, and the electricity provider is limited to 25kVA, your actual limit before it trip...
Main issue with 3 phase at low power (16A per phase) is that... you get 16A per phase. So if you plug two 10A single phase appliances on the same ph...
Much longer than that here. The heating isn't even on.
First you need to know how much thermal energy you'll need through the winter. Then you can get an idea of how much mass will be needed to store it ...
To use ice as a storage medium, consider the latent heat of fusion (334 kJ/kg) which is about the same as 80°C worth of thermal capacity. A "3 ton" ...
Yes indeed that is exactly how it sounds. Water rushing, like a partially opened valve with too much flow or deltaP through it, or other restriction. ...
This tool lets you input the makeup of your wall, ceiling, roof, etc, and calculates U/R-values. It can also simulate summer comfort, thermal mass, ...
Indeed, current on the grid input = current used for charging + current output on backup port... There is another fine print: if the internal relays...
Depends on what's in the box. Either it has a charger (AC to DC) and an inverter (DC to AC), or one bidirectional DC/AC converter which is cheaper. ...
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Degrees of Separation
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... And that's being generous! I'll tell you a littl...
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never ceases to amaze me.. Keeping steel works going ...
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RE: Electricity price predictions
great session Reminds me why some politicians can be ha...
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Absolutely agree. The massive Hager CU my vaillant requ...
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RE: Why don't people choose heat pumps?
With a heatpump tariff, it should be cheaper to operate...
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RE: How much of your renewable and home setup would still work if the internet went down?
absolutely agree. even if many providers see that extra...
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I thought the cr*p came first and the biofuel came afte...
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@jamespa I replied yesterday with detailed readings whi...
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@editor This is an important point. each winter, you...
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