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Last seen: Mar 25, 2026
@sheriff-fatman Thank you for the additional information. Your system seems to be very similar to mine and it produces very similar results. I have us...
@jamespa Thank you, I have validated the temperature sensors and found them to be accurate. I am interested in suggestion c) that there are specifi...
@f1p Thank you. I have specifically asked Mitsubishi about PWM control, they have told me that it isn’t available if you have a third party cylinder. ...
@jamespa Thank you for the reply. I recognise that the data that I am using is not very accurate but it is good enough to show that the efficiency of ...
@f1p Yes it’s a 25% change in Delta T and hence a 25% change in output
@f1p I only have 1 pump the max flow is about 25 l/min, here's a table including flow rate, OAT, COP etc
@f1p That's a large difference in performance to my system
@jamespa Please would you explain In that case no surprise COP is only 3.1 if my understanding of autoadapt is correct" My understanding of auto adapt...
@f1p 17 Radiators with a combined output of 10.2kW at a delta T of 25C, i.e. flow of 45C room temp of 20C. Water heating represents about 5% of my o...
Correctly attached 28 Feb this time
I'll try again that was for 5 Feb MEL Pump App - Heat Pump Detailed Report
@f1 p. If I have done this correctly it should give the data for 28 Feb which has no defrost cycles, an OAT of about 7C and very stable operation ...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay I started to record oil usage per month on ...
By ian33a , 55 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 , 4 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 10 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
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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 , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day 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...
By Batpred , 1 day ago
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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...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 3 days ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 4 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago
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