Quote:
Originally Posted by Ormston
Looking for advice on earth tubes. (pipes that run underground to collect/dump heat from outside air as it is drawn into the house)
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I think the way to go is to use plastic pipe and circulate water, plus radiator. As far as brine, use more pipe and rely on water as your heat transfer media. The radiator will be the single site of condensation, and it will be easier to manage, both in terms of dealing with moisture and bacteria.
I think earth tubes are great in dry areas, which your green island is not.
Passive House seems to be going for earth tubes. Maybe research those forums.
Keep us posted!
-AC