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Everything posted by SteamyTea
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how to facilitate PV at future date?
SteamyTea replied to CalvinHobbes's topic in Photovoltaics (PV)
The installer may not accept them. I would not trust someone pointing at some old cables while saying 'use them'. -
how to facilitate PV at future date?
SteamyTea replied to CalvinHobbes's topic in Photovoltaics (PV)
Why bother with cabling. Just make sure there is an easy route that cables can be run through. Usually there will be 2 pairs of 4mm DC cables from the modules, and anything from 2.5 to 6mm T&E for the inverter to the Consumer Unit. -
Are you talking about using 2 of the 3 phases? Used to be done in farms in the past. You get to play with higher voltages, but the same current, so more power, but still classed as low voltage. Midsummer have something about it. https://midsummerwholesale.co.uk/split-phase
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What would you do differently if you could do your PV install fresh?
SteamyTea replied to Gill's topic in Photovoltaics (PV)
We already have a system to tax vehicles, Road Fund License. Why reinvent the wheel, just change the amount charged. They had a Highways Agency vehicle parked up on the A30 last week logging all the passing vehicles for RFL breaches. -
About 13% then. Some of it is to do with the module's long term performance warrantee. If you want to guarantee say 80% after 10 years on a 300W module, then fit a 330W module.
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Probably up to 25% when the stars align.
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It gives, when new, the name plate rating when under standard test conditions. It is easy to exceed those conditions.
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I think you may be getting what I am saying confused. One problem with uncontrolled nano generation, is that locally, it can affect grid stability. Grid stability is expensive to control, and horribly expensive to rectify with current generation mix. Once we get a lot more large scale Wind and Solar on line, we can get back some fine local control again. Large scale wind and solar, and especially solar, is, in grid terms, pretty small ~1 to 5 MW. A small gas plant is 500 MW. Distributed generation does not work in unison, as one generation block, it is very much local. Until we have a robust, real time, centralised control system for most RE generation (except large hydro as that is already controllable), local switching of local loads i.e. diverters, may be doing more harm than good because to balance the grid, our current thermal plants have to be adjusted. At the moment, the National Grid uses historical data and weather reports to predict demands. It does a fantastic job, this weekend, which is an odd 'bank holiday weekend' has probably been a real challenge as they did not know how many people will stay in to watch the telly, and how many would not. You can look here for recent charts: https://gridwatch.templar.co.uk/ Yesterday was less peaky than the Saturday before. Wind power was also way down, which may have been management, more than lack of resource. The week has be quite volatile though. I can't look at the data closer at the moment, but it may make for some interesting analysis when it is a rainy day.
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Why should the government do it, they are there to set the regulations to encourage private investors. Apart from dithering on the overturning of the moratoriums about onshore wind, they seem to have created a good framework in the UK. We have a lot more RE generation now than a decade ago, and still plenty of sites that can be developed. Not many people do a true energy audit, and even less include pollution in it. I think I am the only one that has posted up a time series of usage, faction of resources and generation type. This is what has happened in my house this year. I have used 0.000002% of the available electricity in the country, which is basically (expletive deleted) all.
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Not though, fluctuations in interest rates, variable weather and system reliability all have an affect to.
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It does raise some interesting environmental questions. And yes to almost net zero. We actually have to be on a path to net minus. ~425 ppm C02 is, as we are finding out, too high for our current, and near future, global infrastructures. Personally I don't think we have to worry, in the developed world, about electrical energy production. Economics has done that for us. Transport and, the really hard one, agriculture, need to be the next two. If we could, in the next decade, cut the carbon dioxide equivalent emissions to the same extent as the UK has cut them in electrical generation i.e. from around 600g/kWh to 200g/kWh, then we can let nature help us a lot i.e. let land and sea plant life absorb the excess. I don't think that tinkering with a few home battery packs is going to actually help, and may hinder. Large scale storage is a different matter, as is demand reduction.
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Only in the same way as saving up for a house and not having a mortgage. You have paid for your power up front. A decade ago, when PV system were between £2000 and £2500 a kWp installed, even with the decent FiT rate, I was better off putting the money in the bank, got 6‰ on it in 2008.
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Was just wondering how much effort it is worth. Good job I don't put a price on reading drivel on here. Might make going to work worthwhile.
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If those few seconds had a duration of 20 seconds, then that is 30 Wh. At 50p kWh, that is 1.5p of energy.
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State of play 2019
SteamyTea commented on Kai casswell's blog entry in Major extension and eco renovation in Leicestershire
Great roof angle for PV production, if it is facing the right way. -
Foam Gun Cleaner - am I doing something dumb??
SteamyTea replied to jayc89's topic in General Self Build & DIY Discussion
You are cleaning a pipe, not bathing in it. Acetone is pretty nasty, as is white spirit. Don't fill up a car with gasoline, it is a known killer. If you drink decaffeinated tea or coffee, then it has probably been processes in DCM. -
I have a pumped shower. If I was fitting it again, or installing from scratch, I would place it on something solid and sound proof. Not really a problem as it is only me at home.
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Uruguay finest. (expletive deleted)ing delicious, and their meet balls in tomato sauce. The leaky one.
