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Posts
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Everything posted by SteamyTea
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The main thing to do is check the condensation risk. Dry, unpainted steel will last well, but damp steel won't. Some of the insulation suppliers have a condensation risk facility in their software packages. Run it though there and see what happens.
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Advice on Cooling and Heating
SteamyTea replied to wcavanagh's topic in Air Source Heat Pumps (ASHP)
They take their H&S very seriously in Spain. Our maintenance guy went to our Spanish site and hated all the rules they had to comply with. -
Advice on Cooling and Heating
SteamyTea replied to wcavanagh's topic in Air Source Heat Pumps (ASHP)
Just had a quick look at your local weather, you are at about 35% RH and 35°C. So I suspect condensation is not a real problem. Dewpoint is around 18°C. Your main problem will be having enough air movement from convection, to make a real difference. If there is not enough density change in the room air, then there will be hardly any power being transferred. This could also be easily swapped by ventilation. You may find that using mechanical ventilation with fan coils for cooling, and heating, which need not be noisy, but can be easily boosted for exceptional circumstances, is by far the easiest solution. -
Probably a chemical reaction between the higher alkaline mortar and the paint. They should be able to find a sealer that cures this, but it will be trial and error (or a chemistry set).
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Mimicking solar panels from an AC supply
SteamyTea replied to Beelbeebub's topic in Photovoltaics (PV)
Run it though PVGIS and then see if it is worth it. -
Who remembers, back in the 70s, those UV 'black lights'. They showed up all sorts of things. For years, I wondered where the blackness in Guinness went. Then, one morning, I looked at my girlfriend, and realised that it went under the eyes. Mirrors are dishonest bastards, and they don't even reverse an image properly.
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Running Cables down a corner
SteamyTea replied to Spinny's topic in Networks, AV, Security & Automation
There is a bit about installing data cables here. As far as I know they do not have to be in a safe zone, though newer PoE may be different. https://professional-electrician.com/technical/networking-data-cables-in-compliance-with-bs-7671-requirements-niceic/ -
Too right, The Queensway Club was one of the best there was in West London. How times have changed. This guy helped me get my rocks off (sauna ones) at the Lingfield Club in Swiss Cottaging.
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Yes, I do.
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Mimicking solar panels from an AC supply
SteamyTea replied to Beelbeebub's topic in Photovoltaics (PV)
What size (kWp) PV system are you thinking of installing? When divided by 17 flats, and accounting for utilisation (50%), is it going to be a useful saving. -
ASHP - our architect negative about them
SteamyTea replied to Wadrian's topic in Air Source Heat Pumps (ASHP)
If someone changes a 'practice', i.e. drive a manual car after decades of automatics, then some retraining is needed. It is the same with heating systems. I went from gas and radiators, in an old Victorian house, to storage heaters in a more modern TF house. First winter I had an over hot home, and large bills. Some tweaks and now I have a stable 20°C home and small bills. Just takes some real research (look that the science, not the brochure) and it will all make sense. Also. Temperature is not energy. -
I just followed a link, from here. https://www.youtube.com/watch?v=747Krf3JqWE
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Try the sound out with this: Best to do it at the shop. https://www.youtube.com/watch?v=CSiLUimI8lA
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It is in Scotland. They still celebrate a sunny day. Nearly time for 17h 55m and the all important 47s for the sun show itself, and peaking at 56° above the horizon. (I get 63° but only 16h 23m and 26s of daylight)
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Apart from the looks, is there any performance advantage in having bifacial?
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Free to Use.txt Yes I have attacked two file. One is free to use, anyone can do what they like with it, it is called Free to Use.DWG, but due to the restriction on this site I have had to rename it to Free to Use.txt The other is called Architect Image.pdf, that is £1000 per user. Architect Image.PDF
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Maybe because they are the paying customer.
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Mimicking solar panels from an AC supply
SteamyTea replied to Beelbeebub's topic in Photovoltaics (PV)
Got to go on a car journey for the next hour or so, do a little sketch of what you want and I can ponder it. I think you can claim a SEG payment that is unaffected by the main supplier (could with FiT) and to a different person. That way it would just be wired in after the individual meters but before the consumer/into units. Any generation will find it way to the nearest load. -
Mimicking solar panels from an AC supply
SteamyTea replied to Beelbeebub's topic in Photovoltaics (PV)
Why not just wire in an off grid system and then run separate DC cables to small inverters in each flat. If too much much power is drawn the small inverters should shut down. But would it not be easier to wire in a grid tied to the main feed and then just sub meter the PV contribution to each flat. -
PV technology has not changed in 40 years. Only gradually improving module efficiency and large price decreased have happened. When governments created long-term contracts, they usually look to be poor value, so you are right when you say that you would not want to be negotiating them. The original FiTs was classic, people are still whining that they cannot get 41p/kWh, but fail to remember that a 4 kWp system could cost £20k+. Same system can be self installed for less than a fifth of that now.
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Ask the architect/designer how much they want for the rights to the design. Then negotiate.
