SteamyTea

I basically filled my airing cupboard up with insulation. Lower thermostat is set so the top of the cylinder is 50°C. The upper thermostat is set to 55°C, but I very really use it. Somewhere on here I posted up a chart showing my mean positional temperatures. Here it is. I thought about this but, for me, it is not worth it, and would only store a small amount of energy anyway. I am a pretty unique case as I rough it on my own, so can put up with a bit of a short shower, or Luke warm bath occasionally. As I am constant trying to save energy, without large capital expenditure, I look at cheap options. I have secondary timers fitted to all three E7 circuits that limit the run time. I have just reset my hot water timer to come on at 4AM and off at 6AM. This will limit the storage to 6 kWh and should give me a bathful in the morning (at about 6AM) without any reheating, which for me, is wasted as losses. I do similar with the storage heaters as I like it warm when I get up, so no point them reaching maximum capacity at 4AM, then cooling, then reheating. I effectively have E4. Just had my water bill in and in the last 90 days have used 20m³. Which is way too much (220 lt/day). Last year I used a lot less, almost half, but it was a strange year last year as I was away a lot more). I justify my high usage as my body aches a lot and no one wants to see a grubby chef, in grubby clothes.

Would it not be easier and cheaper just to pay your Father's fees (assuming he still has the testing equipment). Or does he have a mate that can check and sign off?

I have E7, but a proper 200 lt cylinder with a lower element and thermostat as well as a top element and thermostat. I think yours is about 140 lt. Have you tried changing your DHW usage regime i.e. use it up in the morning, rather than last thing at night. Use less water. You may well find that the standing thermal losses are quite high, and get higher when you increase the temperature. Adding extra insulation to the cylinder will help, as will lapping the pipework. Apart from increasing the losses with a higher temperature, you increase the risk of scalding/boiling, which can cause other problems i.e. hot water going to the F&E tank, thermal protection cutting in, thermal protection valve opening.

I have just been reading about OSB4, which I think meets some airtightness standard or other. Anyone know more than the marketing BS on the websites.

Try it out on a small section and see what it looks like in a years time.

I have used one of these in the past, it worked well. https://www.toolstation.com/tct-sds-plus-electricians-box-cutter/p17695

. Seem to have that multiple post problem again.

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Noise is such a strange thing. I am parked up on Penzance Prom, it is a 20MPH zone. Got the car door open (to slow the (expletive deleted)ing cyclist on the footpath, the cycle path is less than 2 metres away, but separated by a wall for their safety, (expletive deleted)). Here is the noise levels.

28.4 https://noisetools.net/decibelcalculator

Half the real noise levels (the actual energy moving the air) or halve the number on the dB scale, which is logarithmic?

No he doesn't. What makes you think that? I have not seen a ToU tariff that has a cheap peak rate. It is the price differential times the usable hours that investment in batteries needs to be based on, not some arbitrary high or low price.

How so, it is a standard contract price with a major supplier. If you based your invest on just one price, that you choose to justify that investment, you are not looking at the long term/whole picture.

It could be like a mix tape.

My E7 is 27.5p/kWh day, and 11.08p/kWh night, with the daily theft of 70.1p/day (before VAT). When I am heating, I use an extra 10 kWh/day. That would mean I need a usable storage capacity of 12 kWh, which would be in the region of £6000 I suspect. £6k, at today's prices, would buy me 51,573 kWh, or 16 years price for all my energy usage.

Abd pays a premium for imported power the rest of the year, and that is before the cost of installing PV and batteries. (Energy suppliers can change the tariff regime as well)

Why not just run the ASHP during the cheaper times and store some of the thermal energy in the slab (assuming UFH) or in water. Chemical battery storage is still a way off being economical.

Welcome. I seem to remember passing through Yelland. Can't think why or when now.

Also makes it shrink back more, so as with most things, not as simple as first seems.

How much PV you thinking of fitting and what size will the wood burner be. I take it you are fully aware of the health risks of wood burners in the domestic setting?

So the paper pusher who makes sure a plane is refuel with the right type and amount is worth less than the guy who drives the truck to the right place. (expletive deleted)ing glad you don't work at an airport. It is the 'paper pusher' AKA middle management, that keep the country going.

Makes a lot more sense as we clean up our generation, but there should be a penalty for gas boilers. The main thing is to get the overall W.m-2.K-1 number as low as possible. More correctly would be to use W.m-2.ΔK-1 as that takes the users preferences and the house location into account.

I seem to remember that the Passivhaus standard for energy usage was based on primary energy i.e. how much coal burnt in the power station and not the delivered energy i.e. what your meter reads. Am I correct here?

They had smaller classes, so less social interaction, and what interaction there was, was just an echo chamber. (disclaimer, I went though the private school system, it does not guarantee success)

Only if the correct screws are used.