Radiant heating in floor

[Shelise Lowrimore]

I am building a solar powered cabin from concrete blocks. It will have a concrete slab and I want to heat up the kitchen floor which will be 2 feet lower than the general floor area. I will be heating water in a stainless steel Flue jacket on a wood fired stove and storing the hot water on the roof.I would like to know the recomended system for installing heating pipe in the slab specially concerning corrosion and expansion. As there are no suppliers of ready made systems i would need to make up the copper pipe and lagging myself from locally available building materials. Any diagrams, lists of useable materials and related help will be most greatfully received. Also any suggestions as how to circulate the hot water (perhaps by a venturi system).Any circulating pump would tax the solar system.Thanks,Ash.

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