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Last seen: Nov 12, 2026
If water is flowing through the radiators quickly then DT will be small for any given heat transferred to the room, and vice versa. The heat transf...
I think thats expected with the way this particular model works, see page 49 of the manual. Adjusting the room temperature 'set point' shifts the WC ...
@jaynieq Thanks for the feedback, its always good to hear what happens as it helps us do better next time. You may find you need to fine-tune the we...
I would agree with your conclusion on the last point. When you say 'target temp', thats set on the fujitsu controller in the plant room? Hopeful...
... Our posts crossed. The 'physics' problem for any invention (although per the above Im not sure its needed) is the desire for 20l/min showers...
Not really that much wasted. In winter, assuming your DHW tank is within the heated envelope of the house, it offsets the space heating, so no actu...
The second one avoids the possibility that all the hot water collects at the top and is bypassed by the returning flow. Not a lot really, but perhap...
I think the physics is your enemy here. Water has an enormous heat capacity compared to more or less anything else. So it needs a lot of energy to he...
It's a good question and one which I have asked myself. We really need a solar panel physicist to answer, I am a lapsed physicist but never really st...
The volumiser provides extra system volume which may reduce cycling or may be necessary for defrost if your system doesn't otherwise have sufficient w...
I believe so, we are looking for difference so as long as you can clamp consistently then it doesn't matter if the figure isn't perfect. I stress th...
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Degrees of Separation
Latest Posts
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RE: Buffer tank on a 2 x 14kw Ecodan system
@fosterl2, ah, that changes the picture somewhat. I’d a...
By Mars , 10 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 12 hours ago
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RE: Why don't people choose heat pumps?
@susannasaunders The link I have found may provide a li...
By Toodles , 15 hours ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 1 day ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
@batpred I mentioned earlier that targeting the payment...
By Toodles , 2 days ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 2 days ago
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Six books in three years and I think I’ve now covered j...
By Mars , 2 days ago
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RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
By Toodles , 2 days ago
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Grant Aerona - Weather Compensation and Schedules
Im trying to set up a friends Grant Aerona. The WC curv...
By bontwoody , 3 days ago
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RE: Air-to-Air Heat Pumps & Air Conditioning: UK Heating and Cooling Q&A
@jamespa I agree, the efficiency of Cosy Cooler ought...
By Rob of York , 3 days ago
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RE: How much of your renewable and home setup would still work if the internet went down?
I think you're right! 🤨
By Transparent , 3 days ago
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RE: Renewables & Heat Pumps in the News
ECO4 muddies the water somewhat, and then some. I thi...
By cathodeRay , 4 days ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
If there is a drain nearby that's exactly what I would ...
By JamesPa , 4 days ago
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I think that CCGT plant in Lingen is more likely to suc...
By Transparent , 5 days ago
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