SteamyTea

Give it a few hours to warm up the cold concrete.

I zoomed in and seems to be about 40°C (bottom) and 35°C (top). Looked at second set of pictures , 35 and 32

Easy enough to knock up a prototype and see what it performs like. Just get a white plastic bag to act as a diffuser.

Isn't that like saying because VW cheated on the emissions, all diesel vehicles data is wrong. We could go around in the circles here, but I have to do and do my CPD now, so that is going to waste some time, that I will never get back.

https://web.stanford.edu/group/cslipublications/cslipublications/bromberger-corpus/On-What-We-Know-We-Dont-Know.pdf

I think GSE make a system in conjunction with Velux. A few people on here have used the GSE system and not heard any complaints. Most PV modules will come from China, and quite often 'EU and USA' branded products are made there. We used to supply Axitec modules (German), but the rep told us that they are produced globally. I think this is stated on the companies website.

From: Model for Life Cycle Assessment (LCA) of buildings "Buildings are designed for long life spans. According to the Eurocode 1990 [41], the structural system of a building is designed for a period of 50 years, the design working life. Nevertheless, with proper maintenance and with the ability to accommodate changes in technical and functional requirements, buildings can last much longer than the design working life, sometimes even centuries" So where does your 25 years come from?

Isn't that one of the mysteries of the mind. We may not be able to recall the answer now, but we know that we have known the answer in the past. Why engineering is done from first principles.

Half term week and being servicing holiday makers. Strange as they are not meant to be be here, but shall take their cash. And you need to select the name from the @ list to send a notification. So you wanted to know about how historical records can be used to control temperature. Basically it looks at the time that the system runs, and at what temperature it runs up to. Then using a combination of convergence and divergence, a system can 'learn' what is required.

Your statement is not really comparing a self builder's choices, more to do with financing mass building.

Any reason for this?

First two questions. Are you going roof integrated or bolt on? What is the roof covering?

True for everything. All the ones I have use the ROM pattern 28-xx-xx-xx-xx-00-00-xx. But I do have one that is outside the 0.5°C temp range when compared to the others. Though I have had this before with Dallas stuff.

I had to sit in the back of one of those, Basildon to Bushey, then Bushey to Canterbury and then back to Basildon. One of the few cars I felt travel sickness in. Not been in one since 1973, and to be honest, quite happy never to go in one again.

So large 4 wheel drive vehicles and small children wetting themselves. I would rather have a house next to me.

Or a decimal place is in the wrong place. I would expect the highest usage day would have the lowest CoP, during the recent cold snap.

Worth putting temperature probes in the slab anyway. https://m.ebay.co.uk/itm/DS18B20-2M-Waterproof-Digital-Temperature-Temp-Sensor-Probe-DS18B20-UK/192870453965

Yes, they work in any orientation. Only two mirrors directing the light after all. You can get posh and incorporate some lensing by distorting the mirrors.

You are going to notice that forever. I painted my bedroom ceiling, missed a bit, about the size of a 10p piece. I see it every day. Bedroom is next on list to be decorated.

Welcome I would look at your local councils planning policy. Or offer to buy the land.

Is it glass reinforced plastic?

Can you make a periscope that pokes out the side, maybe built into a porch.

We can keep it open, as long as we don't get rude.

So one where of the year where you have used an extra 270 kWh in a week. Divide that over the weeks in the heating season, say 30 weeks that is 9 kWh/week, not a very high price to pay.

Why should they when gas is <3p/kWh