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Climate Change
- Thread starter SpurMeUp
- Start date
Now that's how to protest.
Lemonade Money
Steffen Freund
Why have one tit in No.10, when you can have two.
SpurMeUp
Jimmy Cantrell
Isn't that good of them? Offering a £5k grant towards what must be a £15k install.
It's only for people who are interested. Nobody is getting forced into it.
Seems to me as if it's offering it to those who could install it if needed anyway. That's fine if they're only showing people the carrot. If they take the stick out then it'll leave a lot of people facing the costs but unable to do anything about them.
I'm pretty sure that's already the case with most people paying increased energy costs due to enforced government schemes they couldn't possibly take advantage of.
Gutter Boy
Tim Sherwood
I was peripherally involved in something called Project Sunshine a few years ago, that was looking at solar panel materials and efficiency. The basic premise was there's enough solar energy hitting a square meter at the equator in an hour to power a whole metropolis for a week. We just have to get smarter at capturing it.
Agree that we need to get better at capturing it but not sure about a square meter being enough to power a whole metropolis for a week. Modern solar panels usually get around 15-20% effieciency of converting. Sure that's right?
https://www.theecoexperts.co.uk/solar-panels/most-efficient
Gutter Boy
Tim Sherwood
I can't find that document at the moment; but they use a slightly different version of the premise here: "capturing all the energy in just one hour's worth of sunlight would enable us to meet the planet's food and energy needs for an entire year" (www.amazon.co.uk/Project-Sunshine-science-fuel-world/dp/1848315139)
That sounds right.
SteveAWOL
Andy Thompson
My house hasn’t got big enough garden for a ground source heat pump nor has it got underfloor heating, so would those air source heat pumps be able to keep family as warm as gas powered combi-boiler if we get another Beast From The East during the winter?
Dunno.
Rorschach
Sonny Walters
Hmm...I think your maths are wrong here. Square kilometer maybe?
SpurMeUp
Jimmy Cantrell
a square meter all the way round the equator?
Rorschach
Sonny Walters
No idea. Up at this latitude we get just above 1000kwh of annual solar radiation for a square meter if the panel is south facing and tilted between 30-45 degress. So the power output for a sq kilometer of domestic panels, for a fairly bricky panel would about 50000kWh/yr. It would be double or triple that depending on panel efficiency.
Rorschach
Sonny Walters
I'd stay away from ground source for price reasons. If you have a small garden then you are talking about about drilling down which is huge money. Air to water is much cheaper (but not cheap).
WIll it heat your house depends on how well insulated and airtight your house is. If the heat loss from the house is too much then the heat pump will be constantly struggling to compensate, and rather than the heat pump saving you money it would drive your electricity bills way up. New houses to current regs are suitable for this reason, and especially if they have underfloor heating which requires a low-temperature flow of water. If you get the setup right, very small heating bills. If a system is put in an unsuitable property then you'll regret it.