SteamyTea

Eat more fruit.

Standard Error of the Mean. Allows you to infer how accurate the results are within pre agreed limits. When looking at something like PV output and Solar Power, there is no need to work at the 1W level, 50 W bins would be accurate enough. Would be the same as a P-Value of 0.05.

Just add in the standard error and it will be close enough.

Almost Kayaks to Lord Weinstock country residence.

Could be a problem for any material. There are flexible polyester resins, and with a suitable orientated weave, expansion joints could be made. I am willing to work as your consultant about all stuff GRP.

That is because of the testing methodology, they have have been tested for output with an input of 1000W.m-2, at 25°C, which would be the point that they deliver at least the stated output. They may well have produced 10% more for during the test. Modules that just fail the STC would be relabelled to a lower output i.e. failed at 330 Wp, relabel as 310 Wp. Even of they are just 1 Wp below the level. So the trick is to not buy the highest output modules, but the ones below, if there is a decent enough price difference. If you find a local weather station that has a W.m-2 sensor on it (kWh/day is no use here), you can take a random selection of dates, but pick the same 3 times each day i.e. 10 AM, 2 PM and 4PM, then correlate the output of your system to the irradiation levels, then see how the performance has changed over the years. You can even adjust for different ambient temperature.

While filling the bath, the shower pump seemed starved of water. Shut the taps, bathed, got up in loft and the cold tank is not refilling. Shut off water, removed ballcock and valve. The little white plastic cone that has a hole in the middle has a small screw in it. The same screw I dropped down a pipe when changing the cylinder a few years ago. Ten minutes, problem sorted.

That is 87% of the stated peak power output of the module at standard testing, which is not the same as as what they actually tested at when new. That makes it very possible that over a decade you will see a quite large drop off in performance of the total system.

Similar to the energy I saved last month by fixing a door and fitting secondary glazing.

Just remembered that I have in the past used these header pins that don't require soldering. https://shop.pimoroni.com/products/gpio-hammer-header?variant=35643318026

Can get a SPI card reader for the ESP2866, so would assume there is one for a 32. I do like off the shelf stuff, Lego mentality.

As long as we don't have a year like 2011. Capacity Factor was halved. https://www.statista.com/statistics/555697/solar-electricity-load-factor-uk/

Spring moves a about 1.5 MPH. But it travels in a SW to NE direction. So that makes you about 45 miles away, in time. So should only be a day and a bit later (30 hours).

My experience with RPi ZW is that some are very reliable, and others are just hopeless, so could it be replaced with a ESP2866/32 or whatever the latest incarnation is, then it is not relying on all the other stuff the operating system is trying to do. The ones I have already have a analogy to digit converter built in, as well as wireless/bluetooth. Easier to load an 'image' onto as well, no need to much about with TTL. Possibly require an easy way to connect it to a network, push button maybe? Sell that bit, but with the option to DIY it as well.

You got any of these blooming?

Depends how much you pay for water and waste really. You can get inline heaters think @joe90 had one and sold it to someone on here.

Don't let the new packaging fool you.

You can get melamine faced ply. Same stuff that is used to create shower rooms. Some is able to be clipped together with the joint hardly showing. But pricey, but after filling the nail/screw heads, would give a better finish that plastering. Would think it is fairly fire resistant as well. Never seen a kitchen worktop slight.

Get one from Penzance Hospital, it has been up my arse. Always nice to have a personal connection to other members.

Yes, I don't think it is excessive. I assume you have scaffolding up, if so, that is quite a saving.

Back in November 2019, installed PV in the UK was, on average, £1465/kWp on a typical 4 kWp system. March 2022 it had risen to £2000/kWp. https://www.statista.com/statistics/499507/average-solar-pv-cost-per-kw-installed-uk/ The only way is to get quotes from installers. Realistically the only information you can get from web searching is component parts.

Yes, but you are talking about Organic Chemistry, not Non Organic Chemistry. Activated charcoal is made to absorb other carbon based molecules, so it will work for that.

The term 'filtration' may be misused when it comes to NOX. It is more usual to use a catalyst. Ammonia (a wonder chemical) is often used to strip the oxygen off the molecule, called selective catalyst reduction, SRC. I don't think a physical filter is going to make any difference.

Have you done a room by room heat loss calculation to correctly size the radiators to the expected load. Get that bit right and you do not have to bother with individual room controls.

Back in the 1960's and 1970's it was not unusual to buy electronic kits for home assembly. I wonder how many half fished Sinclair amps and calculators there are in Grandad's lofts.