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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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Degrees of Separation
Latest Posts
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 4 hours ago
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RE: Adventures in heat loss calculations
yes and no. apparently HG’s AI was automatically assumi...
By Batpred , 4 hours ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 4 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@rob-of-york Thank you for that, whilst familiar with t...
By kilgorexv , 4 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 5 hours ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 8 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 3 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 4 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 4 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 4 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 4 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 5 days ago
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