On Tue, 10 Nov 2009 12:36:03 -0800 (PST), frigitar
<(E-Mail Removed)> wrote:
>On Nov 8, 8:11*am, Saki <saksiri.kridak...@gmail.com> wrote:
>> This my idea, I have search the internet and can't find where someone
>> has done this. I am building a new house with radiant floor heat. It
>> is a 2000 sq ft concrete slab 4 inchs thick. It will be insulated
>> under the slab. I want to build and external slab also insulated 4
>> inchs under and around the slab that will have 2 layers of clear
>> corigated fiberglass cover (double pane window). The top of the
>> external slab will be painted black to attract the heat from the sun
>> (Greenhouse effect). Store the heat in the external that will have the
>> tubing built in so I can curculate water between the two slabs. I was
>> going to make it about 8 x 16 foot. How thick can the external slab
>> be? If I make it 2 ft thick will the heat penatrate 2 ft or is that
>> over kill. I want to use it as and external thermal mass battery or
>> make it 6 inchs thick and use it as an external solar generator.
I am late to this party so may be my idea has been covered. If so
sorry.
I'd approach this in a slightly different way. First I'd greatly
increase the mass of the house slab or use a water tank, pool, pond to
store the heat. Then use an asphalt drive way for the heater.
It's the storage area that has to be massive not the collector.
brian
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