SteamyTea

Half way between what goes into the radiators/UFH/thermal store/UVC/Cylinder and what comes out. This is why I am starting to think that buffer tanks should always be fitted to heat pump systems. In the same vein, maximum power into the room will be the mean temperature between the slab/radiator and the desired temperature. Note this is power, and not energy.

Works in an ASHPs favour, the humidity is already reduced. Remember it is the mean of the temperature differences where maximum efficiency is delivered.

There are two temperature differences to take into account. The difference between the outside air temperature (and the enthalpy) and to cold side of the ASHP, then between the return temperature and the HP output temperature on the hot side. CoP is a rather crude method of combining the two as it only takes into account the low entropy electricity and the high entropy output. Oh look, enthalpy and entropy in the same paragraph, I never remember which is which.

Before that I seem to remember, you asked about it about 2011, over at the other place.

Only one place to post it, Mumsnet The more liberal arm of the WI

Not what I heard. I heard that he got called back to Porton Down to intergrate tracking into the latest vaccines, with a PIC microcontroller. You can tell you have got to his house, even in the dark, as the WiFi says GCHQ. And we all know he does not have a sense of irony. Or sarcasm for that matter.

I think there needs to be a distinction between being 'on' and 'running'. You can have it on, but if no call for heat, then it is not running, but you cannot have it running and off. Also, daytime, or more correctly daylight, hours are generally warmer than nightimes. So that has to be factored in. How long you been saying that, just adjust the time for between 1AM and 7 AM (just had letter from EDF about changes to times, but not till March 2023), and see if you have enough for a day. Bet you do.

Above my paygrade as well.

Um, interesting idea. Was this while they were secretly building a Mars rocket for SpaceX

A denial is as good as a confession in cyberspace.

Why I never use emojis, keep the bastards guessing. Thing is we know there are some people that know the reason he stopped posting, but they are keeping quiet. Not sure what they are protecting.

I still use them so that I can swear on here.

Yes, unlike gas and oil burners that get better the closer they are to maximum rated output.

Easiest way is to try it while take meter readings every day, and keep a record of the external temperature, sunshine/cloud cover and wind speed (you can get that from a local WeatherUnderground station) You also need to know what the difference in price is, and when your dual price time windows happen. Then calculate the amount of time you use cheap rate compared to day rate. Use Alt 248 to get the ° rather than *

If we knew the size of all the radiators, we could make a pretty good estimate of the heat input. Then if we know the floor area of the house (length and breadth), we could make a pretty good stab at the thermal losses.

Was it you that pissed him off. I would like to know that he is safe and well. Can always send him a Christmas card.

He was nothing like that in person, very generous with his time, and enthusiastic about things, including Morris Dancing and techno music.

Yes, and it was my job to highlight it and put a stop to it. If you do not understand how data should be collected, cleaned up, tested and presented, I am willing to give lessons, they do not come cheap. That was about Boris, not BREXIT.

Opinion is the starting point, then it gets backed up with testing and data to see how it matches reality. Trouble is with this whole BREXIT debate is that opinion became the endpoint, with all the detailed hard work skipped. Would be like asking one of my old, first year, forensic science students to do a third year project in contemporary art, without any books, visits to galleries and not being allowed to speak to experts in the field. It would be a fail.

@LA3222 What you are doing is just spouting opinion. You even say If you want to be taken seriously, get the data.

Oh good, a new bathroom to visit.

I think it would do this anyway because the power will go to the nearest load first. Check that the batteries can charge at a high level, and as they get fuller, the current they pull gets lower. and it is kW, not

Where is the pipe insulation. And To the rest, any incorrectly sized heating system will fail. @zoothorn You are going to have problems claiming it is not fit for purpose if you keep refusing to let it run 24/7. What you are doing is, using a car analogy again, buying a new car, sticking it in third gear, and saying that it makes a lot of noise and has limited performance, and costs a lot to run.

Mark up the cables so others know what they are. Really annoying finding a disconnected cable and having no idea what it is.

Have we seen the heat loss calculations for the house, and how them match up with the ASHP.