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Last seen: Feb 13, 2024
"leaving water temperature" aka flow. Regarding your second question TLDR response: Where the heat load @ -2 degC outside is < 100W [concrete/t...
I am in the process of doing it. Completed the bathroom (150mm spacing with 16mm pex al pex pipes) and the kitchen/dining (100mm spacing, topped with...
Definitely my experience when I had a brief test manually controlling the LWT I quickly went back to weather comp. I think best to do at @TomC is, us...
You should calculate 1.161 watt hours per deg C. So assuming you are going from 45-52 degC for all 300L using a 3kW element (no stratification) that...
I am facing the same challenge, how to optimise for efficiency. As per my posts on another thread, it seems, #1 - efficiency all comes down to one ...
I have been wondering about this myself. My night rate is almost 3x cheaper than my day rate (at the moment) and my cop day vs night likely to be les...
@sunandair > how do you know pump speed cannot be controlled? Yes my HP can control the pump, but I did not know that at the time as I was foll...
@derek-m I am back on this topic. So I looked at Grahams post on the carnot cycle, and some other stuff. And flow rate does not come into the effici...
@bretix I think having aluminum i the circuit mixed with steel and copper means you need to be more on top of the PH of the circulating water as this ...
@marvinator80 regarding -10 and ASHP - I have been told, that you need to take the "long view" and look over the whole year. This probably works bett...
@derek-m This is what I got when I tried to "fiddle" with the system and manually control the LWT, heat pump was very unhappy, I very quickly switched...
Decided to check the specs of one of my Zone valves vs ESBE @ 45 lpm - so about 4x At more modest flow rates there does not seem to be much diff...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@ian33a You only need the heat energy in kWh output b...
By Rob of York , 27 minutes ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 16 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 2 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 2 days ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 2 days ago
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It’s been out a few days and Amazon has already attache...
By Mars , 2 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
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@transparent thank you for your reply above. As alway...
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
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