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User Name Thread Name Subject Posted
Mr Yellow BS: Wind turbine efficiency (63* d) RE: BS: Wind turbine efficiency 04 Dec 06


Under soil heat collection -

Apparently, at the depth of water supply pipes the temperature remains fairly constant at 6 deg C in the UK. Hence the depth of supply pipes - never freezes.

I would have thought summer cooling would be more efficient winter heat collection but I have seen TV programmes where they install the garden pipes.

Mind you sub-soil windage is not that great...............


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