SteamyTea

You lot use dragons to deliver them don't you.

@damspt UFH = under floor heating OAT = outside air temperature IAT = inside air temperature DHW = domestic hot water WC = weather compensation kWh = energy kW = power

I work with someone that has a house similar to mine, it is also on E7. She decided that the old storage heaters were faulty, so had them replaced with new ones. Guess what, she paid the same to heat the house. Someone at work has lent her a small (500W) fan heater, as it 'only costs a penny to run'. A penny on her tariff is about 2 minutes use. When I questioned as to why the heater was so good and cheap to run, I was told 'because it is ceramic'. Now theses twats know my educational background, have asked me in the past about the best things to do to reduce the monthly bills, and then ignored it. I shall start taking in my bills and complain about my expenditure, which is about a third of theirs. As a general rule, if 'science' is mentioned in some advertising, the product is crap. No one mentions the polymer science of car tyres, or the electro-magnetic spectrum for a DAB radio, I really wish people would stop wishing things were magic and when they have bought them, convince themselves that they have made a good purchase.

That will account for the negative usage then.

Oh dear. Must be getting close to Christmas when all the magic starts happening.

I re-charted your data in a more suitable way, but as I do not know what Heating Degree Days (HDD) base temperature you used, was it 15.5°C as that is the usual UK default, I suspect it is not giving a true picture, as at 1 HDD, your house has no base load. 15.5°C is really a reflection of our shoddy housing stock and crap heating systems. At 3 HDDs, and 3°C is a typical house temperature above OAT when there is no heating on, your daily, non heating, load seems to be about 10 kWh. Adjusting the base HDD temperature, and with a full years (or more is better) worth of data, should show you the DHW usage and any parasitic loads. I have found that HDDs are not very good for homes like mine that have E7 heating as during the shoulder months it is too easy to have an overheated house. I also have a secondary issue in that half the time my house does not draw anything from the grid, this skews the numbers if I try an calculate it at the hourly level to reduce the effects of the overheating issue. Where HDDs work well is in offices that are fully climate controlled i.e. very stable internal temperature.

Some say that a Cornishman is like a Yorkshireman with all the generosity squeezed out of them.

Won't they sink into the grounds?

Oi, kWh.

@damspt Does that price on your charts include the daily charge and VAT? 4 quid a day seems quite low to me, mind you, yesterday I used 6 kWh, and I had a light frost on the car this morning (only one at work that did, but then I start earlier than the idle buggers). Your chart shows a higher usage during the evening, are you doing a lot of cooking and clothes washing/drying. A faulty fridge can burn though quite a bit of juice, check it to see if it constantly running (touch it and feel the vibes). Much warmer when I left work half an hour ago. South West wind now. So cold snap is over. This is what it was like earlier. Not much difference in temperature, but windier, and from the North, which is rare down here (we had snow in Bodmin).

Depending on how far away the new job is, and what kind of job, could you live in a decent campervan (one with shower and bog). If you park them up right, can be cheap living.

If everything is in the same room, and you know the thermal characteristics of that room, measuring the rise and fall in air temperature would give you a very good idea of those losses.

Do they take credit card payment. A quick look at the Companies House website, well I just looked at Norrsken, shows everything quite normal. Not that it shows everything.

Most web browsers have them built in

Like this one

Well the sun out is because the windows are small, the winter heat leaking out is because they are usually single glazed. I don't know what it is about the British and the fixation with large windows.

Basically what @JohnMo did, but with an A2WHP.

Taking those modelled phase shifts if 7.2, 10.3 and 12.5 hours only really apply on the 2 days a year when each hours of daylight, or hours of darkness, coincide with the phase shift. The other times the building is cooling or heating. Did you just model a wall? The two biggest influences are the glazing area/orientation and the uncontrolled ventilation rates. A thermally inefficient floor can have an impact as well. The footprint area to perimetry ratio makes a difference to. Basically once out of the tropics, daylight hours plays a larger and larger harder game the greater the latitude. The UK also has a strange climate, not easy to model reliably as we can have warm nights in the autumn and winter (last week was over 13°C), but quite cold in the spring. Much of this is to do with the sea surface temperature around the UK. It is this relatively high winter SST that makes the UK cloudy.

Quite a few about now. Some can be had with a DHW system included. For a new build, combining ventilation, heating/cooling and DHW should be seriously considered. Having said that, I tend to think that it is easier to separate them as they do different things, at different times and at different temperatures (the 3Ds).

Was chatting to a van driver the other day, he had fitted some 'nice' wheels (actually is a red light to me if I see non standard wheels, especially on a van), the dash lit up that he had 'low tyre pressure. Apparently this is common and has to have the ECU/Sensors recalibrated. Good I say as that red light to means a twat is driving.

The physics behind heating system is, at worse, so low that a 12 year old probably learns it at school.

There are a number of factors that govern PV yeild. I am black and proud (well on that map).

Most car journeys are really quite short, hardly seem worth manufacturing extra battery packs, building an infrastructure for the extraordinary journey. Battery technology in its current form is only about 30 years old, shall we remind ourselves what cars in the 1920's were like. Now let us look at what an EV from the 1990s was like.

What you need next door is a company that needs low temperature process, so a commercial laundry, or drying facilities like grain drying.

I would worry about what sort of 'data' is being moved around.