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Last seen: Sep 19, 2024
Now that statement I can agree with. The problem is that in mild weather conditions it is not possible to run heat pumps continuously, whatever you ...
I'm not changing the fundamentals, there is a minimum thermal energy output that a given heat pump can produce when operating at its lowest possible o...
@iancalderbank In your situation an Air 2 Air heat pump system would probably have been much more efficient and cost effective. I know, too late now...
I would be interested to know how he ties the harmonics to heat pumps, rather than EV chargers or battery chargers or solar PV inverters? Is he anti h...
I think that you may have taken my comment out of context, since I was referring more to short cycling rather than just general cycling. I think tha...
I think that we may be referring to different things when we talk about harmonics. To me harmonics are frequencies above 50hz, often caused by inducti...
I have just found the info linked below, which would seem to indicate that PWM uses Zero Crossing control rather than Phase Angle.
To be quite honest, without looking inside a heat pump unit to see what motor is actually fitted, I can only assume that it will be an AC induction mo...
First of all the entire operating range of required output from a heat pump, can go from no heating required at all, to possibly over 100% of maximum ...
I'm afraid it is not quite that simple when one looks at the big picture. So if every household in the country switches to a heat pump before next W...
@jamespa Some re-balancing of gas and electricity prices has already taken place, since electricity prices are 3 times higher, whilst gas has been i...
@cathoderay I remember reading an article several years ago, about the amount of available energy from the ocean currents flowing around the British...
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RE: PV and battery long payback - sense check query
If you look at the line just below the “Add reply” butt...
By Majordennisbloodnok , 25 minutes ago
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RE: HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
Signed up!
By bobflux , 7 hours ago
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RE: Electricity price predictions
In our case, we constrain the charging level etc using ...
By Batpred , 7 hours ago
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Does minimum system volume matter in the context of sim...
By Tony.Stolz , 24 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
I had a quick look and they are a little vague. They ...
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RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 1 day ago
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 2 days ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 2 days ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 2 days ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
One of the other mods has just reminded me that @ashp-b...
By Majordennisbloodnok , 2 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
By Adrian , 4 days ago



