SteamyTea

Or make roof integrated systems from natural resins and reinforcements. May see the name Tufnol resurface.

9 days off six years since we voted to leave the EU, weren't we promised that things would be cheaper and more plentiful. £350m a week should buy a lot of PV.

Not sure of the market has 'blown up', whatever that means. But there are some chancers about. https://www.ebay.co.uk/itm/233627688029

Bigger than 0 Pa. That will be less suction, not more.

Ski lift, it may snow oneday.

What are the maximum flow rates?

Didn't using 2 of the 3 phases used to be called 'split phase. Was fairly common in small farms. https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=38062

Yes But if the temperature is no more than say 14⁰C in the summer, and closer to 8⁰C in the winter, all year round you are losing heat to the ground. Even if that heat is free, it is still leaking out. Don't matter how stable the temperature is, if it is too cold, it is too cold. The Atlantic around here is stable, still not going in without a very thick wetsuit.

With regards to insulation (Q1), Yes loads. It is a brave assumption that the ground under a house will act as a thermal store. Even if it did, you have supplied the energy to heat it. GSHPs work on the grounds that they extract the energy in the ground being the mean of the annual air temperature, so around 12⁰C for me. Always ask the question 'why is wine kept in a cellar'. It ain't because it is (expletive deleted)ing hot.

An even cleverer one was Fourier.

Pretty what? Pretty Vacant

Because we are the chosen ones and it keeps the Moonmaids pretty.

I get a lot of salt, and dust from the Sahara. I am a few miles from the South Coast, couple of miles from the North Coast, and 200 meters high.

Do you have filters on the outlets then? More seriously, if they are clean, there may not be enough flow though them. Does the local farmer plough, rake and harvest crops?

Till you light the fire.

When it is cold outside, I always put the same thin jumper on, the one I wear at work when in is 40°C.

Think so. Was only rough mental calculations. Filter is quite small on the Ford.

I have tinnitus, a bit of noise is helpful. Probably not as good as the World Service, but a lower pitch does mask it.

Would he cope with a ramp? Lack of handrail with this one is a problem. https://www.mobilitysmart.co.uk/folding-wheelchair-ramp.html Got my Father one for his last few months, Works well, and can take it to other places. Got one of these by the back door. https://www.mobilitysmart.co.uk/metal-half-step.html My Mother finds it useful to get out. Again can be taken anywhere i.e. visiting the pub.

Read this just before I left work, got me thinking. My car gobbles about 100,000 m2 of air every 20,000 miles. That is about 600 hours driving for me. Now I have just bought a new air filter for it and it cost £8 from eBay (my fuel consumption has dropped about 5% recently, so time for a change and it has dons about 30,000 miles). Converting that into litres per second that is ~45 litres.s-1 for 600 hours, about 25 days worth, cost at that flow rate would be £113/year. Anyone got any total flow rates for their MVHR?

The Brexiteers have blocked it. They say it is interfering with you choice. They recommend roadkill Bamby kept in a PPE powered Lucas fridge. (The old automotive joke about warm beer)

Putting a double check valve may sort that out. Or put in such a small pump that it could never increase pressure above mains pressure. Or just for a proper old school gravity fed system. Odd how many people lament the lack of skills and ingenuity of our old Victorian ancestors, then fit a pressurised water cylinder that does not offer any real benefits, but costs more.

Yes you can. And probably, these days, not unreliable.

So around 1.6 MWh/year. That seems extremely high, pulling nearly 200W, on average. Out old mate @Ed Davies an myself worked out that my cheap (£100 Currys bargain) fridge pulls a mean of 5W, and his was 8W. I would seriously look at them. I have a small router, 3 RPis plugged in, fridge, 4 digital timers/switches, alarm clock and my laptop permanently plugged in, first full week of June, 69% of the time I was not drawing any power (well less than 1Wh). Even at the time of heavy load i.e. when heating up my hot water for the day, 29% of that time I am not drawing power at all from anywhere. Mean Power from Wednesday 01/06/2022 up to Wednesday 08/06/2022 Maximum Power from Wednesday 01/06/2022 up to Wednesday 08/06/2022 Percentage Zero Power from Wednesday 01/06/2022 up to Wednesday 08/06/2022, Mean 69% Mean Room Temperature Wednesday 01/06/2022 up to Wednesday 08/06/2022 Hour Mean Power / 0.1 kW, Percentage E7 / 78 %, Total Energy 22.4 kWh, Day Energy 4.9 kWh, Night Energy 17.5 kWh Max Power / 3.2 kW Mean Percentage Zero Power / 69% Mean Room Temperature / 21.4 °C 0 0.0 2.3 78 21.3 1 0.1 2.3 69 20.8 2 0.2 2.4 63 20.6 3 0.2 2.9 75 20.4 4 1.5 2.9 29 20.2 5 0.3 3.2 70 20.1 6 0.2 2.8 55 20.0 7 0.1 2.2 62 20.6 8 0.0 2.1 64 21.2 9 0.0 0.4 79 21.8 10 0.0 0.1 82 22.0 11 0.0 0.1 78 22.0 12 0.0 2.2 76 21.9 13 0.1 2.2 64 21.9 14 0.1 2.3 68 22.0 15 0.0 2.1 77 22.0 16 0.0 2.2 66 22.0 17 0.0 0.1 79 22.0 18 0.0 0.1 81 21.9 19 0.0 0.1 81 21.8 20 0.0 0.1 84 21.7 21 0.1 2.2 73 21.6 22 0.1 2.5 50 21.6 23 0.0 0.1 61 21.6 Here is my coldest week numbers as daily means. Mean Energy Usage from Tuesday 01/02/2022 up to Tuesday 08/02/2022 Mean Room Temperature from Tuesday 01/02/2022 up to Tuesday 08/02/2022 Mean External Temperature from Tuesday 01/02/2022 up to Tuesday 08/02/2022 Mean Daily Energy Usage 14.6/kWh, Total Weekly Energy 102.5/kWh Mean Room Temperature 17.1°C Mean External Temperature 10.5°C Monday 14.8 17.1 10.5 Tuesday 20.9 19.8 10.5 Wednesday 18.6 19.8 10.6 Thursday 18.2 19.9 10.9 Friday 20.4 19.7 10.5 Saturday 3.5 17.8 10.5 Sunday 6.1 16.6 10.3

I am not sold on this idea that we loose body heat though the window panes. Just got to do the numbers, remembering that it is only the surface parts of the body that are exposed to the window area that count, so quite a small area, and most of that area is clothed. We like to think that the body is at 38°C or so, but that is core temperature, not exposed skin temperature. Then there is the window. Most are at least double glazed, and a bit dirty, and often filled with a gas that blocks radiation, not to mention the IR, one way, coatings. And that is before we look out of it and see what it faces. Not many people have windows that look up into the darkness, and vastness, of the universe. At best, it looks up at cloud, a lot warmer than the 4K that the CMB generates. Most windows look onto another building, so pretty close to OAT, some may look out onto woodlands, so slightly higher than OAT, and others out onto an ocean, very often higher than the OAT. So we may loose a little power though windows, but in reality, way to small an amount to bother with.