SteamyTea

Um Been discussed a fair bit. If you see the term 'far infrared', be wary.

Were you thinking he could warm his acid bath water with some?

That is quite a lot of power. How far can it be throttled back? Just had a look at the data sheet, 3.8e and 12.2h Which is still quite a lot. Ask @scottishjohnto knock something up from a small outboard motor.

I agree with that. Though sometimes harder to work out on a time series. I think it could be worked out from the GridWatch data as that gives generation by type at the 5 minute interval, as well as demand.

Interested in how you calculated the 13 tonnes of carbon dioxide. There were many times this year when we had very low fossil fuel usage, this reduced the carbon dioxide per MWh considerably. There are also regional variations. A quick look at intensity.org.uk shows that the South East, where you are, has a CI of 245g/kWh. South West, where I am is 78g/kWh. So your 5 MWh is worth 1225 kg saving, mine is 390 kg. A third of yours. Makes investing in personal RE for carbon dioxide saving rather marginal. @Ed Davies is the person that has looked at marginal differences in grid intensity.

How does it know what information you want? Not saying this mirror project is a replacement for home automation, or even a replacement for a notebook, pencil or diary. Just thought it as a nice combination of two existing technologies. One fairly old, and the other very old.

And everyone in their back offices can have a good laugh at what you are saying.

Can you just create an artificial island and let the ducks build their own home.

Well yes, but we are where we are, so short of pulling down all the hopelessly small places (a policy I am not against), we have to make places as useful as homes as possible. Not that long ago, before the Sunamp was about, your general advice was to go for a combi gas boiler (if there was gas). Just because there is a lack of imagination in the design of retrofit UFH, does not mean that it is totally unsuitable. I am not claiming that a restively heated, wet UFH is the only, or compulsory heating solution, just that it should be researched seriously for a small home.

I agree, but if we constantly keep bodgeing and compromising, we will get nowhere. Sometimes, we just have to bite the bullet and do the right thing. Often too much emphasis is put on price and not what is best for the occupants.

I don't think you realise just how restricted a badly designed, 48 square metre, 2 bed, terraced house can be. Even windows get in the way.

@MikeSharp01 Ok, I seem to remember reading about this once. All a bit Boogie Nights having mirrors and cameras. I was just thinking of some weather and energy data, maybe a reminder of two. But maybe a plug in that films the missus could be the solution to the problem that @ProDavewants, they have long winters where he lives.

Trouble is that in a small home, you loose wall space and floor area. Why I took the panel heaters out of the bedrooms, they limited were I could put the beds.

Just 1

Quite like this, not that I spend much time in front of one. https://electronnicproject.blogspot.com/2017/11/build-voice-controlled-diy-raspberry-pi-smart-mirror.html

Does rely on having room for it, and a thermal store. There are some relatively small, wall mounted air to air heap pumps, that could be good enough for a small place. It may be able to fit them in with oversized MVHR, but again, in a small house or flat, probably not enough room.

Yes, and if the water temperature is low, it will flow even less.

My shower delivers at 11 lt/min, it is nice. Probably get away with 9 lt/minute.

https://cromarbuildingproducts.com/wp/wp-content/uploads/2018/06/DataSheets/Powder-Mortar-Tone.pdf

Nice way to make a few quid from a RPi.

Ply, jigsaw and sticky tape.

It really comes down to what you want. Do you want a house that is at a constant temperature, regardless of usage/occupancy. Or one that drops the temperature at certain times i.e. night, unoccupied. Or, to take advantage of variable rate energy prices. Or a system that preempts external weather conditions. Basically, the more you want, the more complicated it gets. About time I came at looked at your energy usage again, maybe watch you balance your MVHR at the same time.

Using mass as storage is really just a way to either time shift when you put the energy in, which may save cash, or to stabilise output temperature, or both. When normal radiators are put in, I have never heard it mentioned that they lack mass, and people see quite happy that they have an area of wall that is, in effect, unusable because there is a hot emitter there. It is really just down to doing some simple heat loss calculations and then finding a cost effective solution. @TerryEuses UFH and a very simple inline, resistance element. He can explain more about it better than me.

You have not used an induction hob then. It is always better to separate space heating and hot water. They do different things, at different times, and at different temperatures. During this renovation can you put in underfloor heating?

Yes it is. I have often wondered why no one has made a low power transmitter that fools the radio controlled switch on the E7. Would save me about 50p a day.