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Posts
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Everything posted by SteamyTea
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We should do a 'citizen science' project. Find out the best way to fluff a towel.
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Surely this is so inefficient, basically heating up an element and a few grams of air, to have it cool down again, just to have it warm up again. Or are you just running the tumbler without a temperature rise? You get used to toweling off with something hard and raspy.
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Finnish prices: https://www.statista.com/statistics/1271437/finland-monthly-wholesale-electricity-price/
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Overall, if you want price stability, you have to pay higher prices, it is how nationalisation works. I doubt many companies are making large trading profits at the moment.
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Kills the theoretical efficiency because thermal losses, that are unused, become parasitic loads. With your baseload, especially from the IT kits you have dispersed over the house, you would be better off putting them all in one insulated box, then making a small heat pump to scavenge the energy and put it into water.
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They did not use UK prices in the analysis.
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Only skimmed it, but says what most if us already know. https://www.pv-magazine.com/2022/06/23/debunking-myths-about-pv-system-orientation-dimensioning/
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With PV, you could take a statistical approach. If it has produced for say 10 seconds, then you can look at the probability it will produce for the next 10 seconds. Then, after a minute, take that probability and use it to predict the next minute, while still gathering data at the 10 second interval. You could make it posh and start to predict power due to time of year i.e angles and altitude, length of day. It would not respond to variation as such, but may allow import limiting i.e. disconnect heavy loads from grid while still allow them to use PV power. Some kind of signal controlled grid isolator on, say, the immersion heater would be needed. This would allow other loads to draw from the grid while the PV is dedicated to one task. While also allowing any excess loads i.e.vacuum cleaner or kettle, to be still powered by excess PV i.e. greater that 2.8 kW
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Mine is >50PPM
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Is it possible for PV diverting the opposite way round
SteamyTea replied to Gone West's topic in Photovoltaics (PV)
Yes, but what I think you are asking for is a ready made device that does it 'out of the box'. That probably does not exist because of the way immersion heaters work and the varying output from PV -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Mine are 3W ones, so 8 of them -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Do you mean Wh. -
Take-aways from Installer Show '22
SteamyTea replied to HughF's topic in Air Source Heat Pumps (ASHP)
More like something they had not considered -
Starting a 40 year old generator, not ran for 20 years.
SteamyTea replied to ProDave's topic in Boffin's Corner
This Yamaha offering has its own sonics already. https://www.ebay.co.uk/itm/185013804212 -
I’m confused about ubiquiti
SteamyTea replied to Adsibob's topic in Networks, AV, Security & Automation
"I’m confused about ubiquiti" I am still confused as how to pronounce it. Is it Why Fie, or whiffy. -
How does your garden grow?
SteamyTea replied to recoveringbuilder's topic in Landscaping, Decking & Patios
Did I leave my webcam in again. Really should cover it over to stop the peeping toms and slutty thongs. -
Think it says what you always knew. I think motorised vehicles and sack barrows/pallet trucks are different. Gets a bit grey when you think about a push bike (almost certainly allowed) and a motorbike (almost certainly not allowed), so an electric bicycle or scooter is on the cusp of being allowed, as long as it is manually moved. So this brings in a mini digger. Some are tiny and can be pushed though standard doorways, so they should be allowed, while others can only realistically be driven, so not allowed. Just make sure all your contractors know which house to park in front off. 37 years ago, my neighbour got fed up with a local company van always parked outside her house, so called the company. There response was; "Strange that as we built him a garage to park the van in" Two days later, after a visit to the garage, which was full of company goods, the guy was signing on and waiting to be prosecuted for theft.
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Comes down to sizing an ASHP correctly, just as you would with any heating system. Then it is down to installation costs and running costs. The first part has to be done first, then the other parts can be established. Limecrete is not really breathable like an airbrick, it is more a case of letting moisture wick though to the outside, where it evaporates. Depending on the mix, it is not inherently different from concrete mixes. Getting the kg.s-1.m2.kPa-1 numbers is challenging though, why there is so much 'mystic' around lime. It is a short hop from the above units to kg⋅m2⋅s−2 which is a unit of energy, and as we know, if you increase energy levels in a solid, the temperature rises. A pascal is kg⋅m−1⋅s−2
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As PV is generally fitted to South facing roofs, at about 35⁰ angle. June 21 is not the best day just because it has the longest (or second longest) hours of daylight. An E-S-W array would be impressive, especially if E and W elevations were angularly optimised.
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So £1300 per kWp installed. Assuming you generate 6.5 MWh/year from that for the next decade. That is 16p/kWh A lot depends on how much of that you can use. If you self use half of that, then it is 32p/kWh. About what we pay to buy it in.
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Can you use a pressure vessel to store the water. It may be called an accumulator. Usually used to flatten out pressure fluctuations when load is greater than inflow can cope with.
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Reducing Energy Bills - How goes it?
SteamyTea replied to Ferdinand's topic in General Self Build & DIY Discussion
