SteamyTea

I think a normal digital meter has the LED light up permanently if exporting. Link that in with the generation meter flashing, via a Raspberry Pi or two, job done.

I had a letter from EDF saying that the radio signal that controls my E7 is being switched off (2023 I think), so I will benefit from one come the day. Shall drag it out mind you. They were meant to swap it out with the radio switch glitched a few weeks back, they never did and the switch started to work correctly again.

Stop saying that, it is just wrong. Any power source that is specified wrongly will cause problems, ASHPs are no different. And power, energy and temperature are different things, the word 'heat' in thermodynamics means energy, not temperature.

You two are just m'bating me now.

That is all, I shall try and split it up later into DHW, space heating and 'the rest'.

This could quickly degenerate, and I am constantly having my posts edited. So I am going to learn some descriptive medical terms, see how long I can get away using them.

I have just updated my monstrous spreadsheet of my energy usage. My daily mean usage is, so far this year, 11.3 kWh, so that will be 4,125 kWh for the year. Floor area (total internal) is 48m2. So that will work out at. 4125 / 48 = 86 kWh.m-2.

Great. You can decorate my porch through the letter box.

Welcome Tree Surgeon?

More any imbalance between input and output. You can have an uninsulated room, but with huge radiators, running at a low temperature, and the air can still get up to the temperature you want. Conversely, you can have a well insulated room, very small, but very hot, radiators, and still not get up to the temperature you want. Or Two identically sized rooms, both with the same radiator size in them, but the water flow to one radiator is greater than the other, so one room will be hotter than the other (this is how a thermostat on the radiator works). Why I suggest that you turn the ASHP on, get the flow temperature up to 50°C, open all the user settable thermostats to Max °C, including any that physically on the radiators. Leave it running, so no night time setback, no switching it off, and just see what happens. You may have to leave it like this for a couple of days, no good after a few hours thinking it is doing nothing different, and abandoning it. AND KEEP IT RUNNING ALL NIGHT. I shall repeat that. AND KEEP IT RUNNING ALL NIGHT.

Is there anyway that this system can be set to one flow temperature, say 50⁰C and left on that permanently. So no mucking about with different temperatures, or times. Then see which rooms get warm, and which ones don't. Then, if necessary, balance the system, see what temperatures the rooms go to. If, the house gets warm enough, then set some on off times. So basically set it up like an old gas boiler.

Easy, log the data and divide by square meters. A number of things spring to mind, how have you calculated the area, what external temperatures are you working with, is the house permanently occupied, solar gain, detached, terraced, bungalow. A few years back, we did this over at the other place, go have a look, the data is still there, and it is quite detailed. Biggest problem I found was that people wanted to measure things differently, i.e PV contributions, not splitting up gas and electric, etc

Just about every car made in the last 20 years is very safe. Selling safety was a cynical marketing ploy by the industry. Said this before, what they need to do is go into estate agents every weekend and ask what they have in their price bracket i.e. 3 times major wage. That should help get the message across, and piss off estate agents, who are leeches.

Yes, and I bet they are perfectly happy that we now have sovereignty again, masters of our own destiny. And we can all eat our own chicken, apart from the stuff that comes in from Vietnam.

Wasn't BREXIT going to make us all better off. How can charging, for what is currently free, making individuals better off?

Was that Euler's Method https://en.wikipedia.org/wiki/Euler_method

Integration is the opposite of differentiation. So if you know the curve, you can calculate the area under it with integration, differentiation allows you to calculate a value on the curve (there is more to it than this). I suspect that it is a marketing term that is based on the performance in different conditions, so could be weather compensation or ramp up times.

I saw in play at the Nags Head pub, High Wycombe, in 1977. Knew he was good then, Declan Patrick MacManus.

Ask the brickie if he knows anyone that can help. I have always liked the saying: "Graveyards are full of indispensable people"

Calculate it. https://www.calculator.net/dew-point-calculator.html

Rather than just using just external temperature as a metric, have you thought of using wind velocity as well.

Ah right, @pocster will have to be your chauffer then, just be careful.

Hardly shows, but look what I am used to.

Might be safer for everyone else though.

Was that buy a MCS installer, or a solicitor?