Solar panels now cost around £3000 from high street diy stores. So why arn't new homes being built with them as standard, as i'm sure that in bulk and at trade prices they'd be even cheaper - perhaps this is some thing on which the government could step in, making changes to the building regs.
people are lazy , when building lots of houses they want they cheaply done and profit back fast , all the new houses built could have had solar panels .
sayyy what about panels??? yes perple oo which doesnt rhyme with anyother word in the english language but who needs the english language when theres plenty of others to go round like yeahhhh
Photo-voltaic panels (electric) aren't very economical compared with current electricity prices. They are OK if you are happy to effectively pay more for your electricity to reduce CO2 emissions.
However a new generation is coming on stream which should be cheaper, we will have to see if they work out better.
Solar panels for generating electricity aren't brilliant, but solar panels for water heating are fine. You can even have a mains-fed hot water cylinder heated by solar panels, feeding the inlet of a combination boiler -- modern ones can modulate their output down quite low. This arrangement gives you hot water all the time, at mains pressure, without you having to do anything! The better the panel is working, the higher the temperature of the water flowing past the boiler's DHW temperature sensor and so the less gas will be fed to the burner. If there is no sun, or if all the pre-heated water from the cylinder has been used, the water at the intake will be cold and all the heat will come from the gas as the boiler runs on full fire.
Otherwise, as far as plumbing is concerned, a solar panel is just like a boiler: you push water in one tube and it comes out of another tube, hotter. You need an electric motor to pump the water heated by the panel, through the coil in the hot water cylinder; and you need some way of ensuring the pump only runs when the sun is shining. The usual way is to have a temperature sensor operating a relay which starts the pump, but it should be possible to have a DC motor running directly from photovoltaic panels with no battery; this arrangement will by design only give electricity when the sun is shining and the pump even will run slower when the sun is dimmer, thus allowing the water more time to heat up. The pump can sometimes be dispensed with if the solar panel is mounted below the tank, as the warm water will tend to rise by itself and this can sometimes be enough to establish a proper circulation; but most installations have the panels on the roof (which would otherwise be wasted space) and you need the pump to bring the heated water down against the natural direction of its flow.
father christmas thinks solar panels are a waste of time, father christmas lives too far away to care about solar panels but if you really want them father christmas will get you some for Christmas
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