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Am a total noob to all things renewable... so please bare with me.
Just purchased a plot of land in Southern Spain. It's a slot between 2 existing terraced type properties and we will have a garden area at the back.
Rear of the house faces south west and get's plenty of sun all afternoon. Still getting 9.5 hours of daylight at the moment.
Thermal solar water is de rigeur out here and all new properties have to include one. I've rented a house with a solar water heater and am impressed with how much hot water it generates, when the sun is shining. On cloudy days, not so great. So some kind of back-up would be required.
So the main issues are, that despite near 40C temps in summer in can drop down to freezing in winter.
House design: would like to incorporate as much passive solar effect as possible for winter, yet negate the oppressive heat that is present in summer.
Electricity generation: what sized system solar PV for a 250 sq m property (comprising main house and holiday flat/granny flat) i.e. how much square footage of roof space is needed to generate a useable amount of electricity?
And there's no feed in tarif in Spain, so is there a means of storing generated electricity for later?
Heating: no piped gas here. Been considering either a biomass boiler. ground source heat pump, either via radiators or underfloor heating.
Biomass seems hugely expensive for what seems to be a fancy woodburner. Apart from quicker/cleaner/more convenient operation what other benefits are there over a traditional wood burner with a back boiler? And whilst I say it can get cold, the temp will be up to 18C on Monday ., so 20K on a biomass system seems overkill.
A friend in the UK has a central heating system powere by his wood burner and uses small gas water heater for his hot water. Would these work with underfloor heating? Or just traditional radiators?
The ground source option seems more appealing but I'm not sure we have enough space out back... and the house sits atop a solid rock, literally. Garden space is around 20m x 10m.
We work from home so ideally need a system that can run all day (economically), which I believe these systems are ideal for, especially running an underfloor heating system.
I know it's a long shot... but would appreciate any and all answers, and any ideas on budgeting even more welcome. |
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