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Posted by DIMwit on July 12, 2008, 6:36 pm
>
>> Hi:
>>
>> I thinking of a cooling mechanism for houses and building in which the
>> cooling -- in the direct sense -- involves only radiation and no
>> convection at all. Sorta like a radiant-stove-top in reverse.
>> Indirectly, however, some amount of convection and conduction will be
>> needed [liquid nitrogen/helium, cold metals]. The cooling panels are
>> on the ceiling and walls.
>>
>> My visualization is that the radiant cooling panel contain extremely
>> cold metallic coils [cooled by liquid nitrogen and/or helium], this
>> would probably be deepest part of the panel.
>>
>> Layer 1: a material that allows heat radiation to pass through but is
>> a very poor conductor of heat
>> Layer 2: the same material found on the very top of radiant stove tops
>> Layer 3: this is the deepest part containing the cool metallic coils.
>> Inside these coils are where the liquid nitrogen/helium would be
>> flowing through]
>>
>> Sorry is my visualization is vague, I myself am getting confused by
>> it.
>>
>> Can anyone think of a more efficient way for direct radiant cooling?
>>
>> By direct radiant cooling, I mean that if you place your body at a
>> noticeable distance from from panel, you'll feel cold because the
>> extreme cold of the coil will draw IR radiation away from your body.
>> OTOH, if you touch the panel, you won't feel as cold because the 1st
>> layer of the panel is a very poor conductor of heat.
>>
>>
>> Thanks a bunch,
>>
>> Radium
>
> How are you going to deal with the condensation and the resultant water
> runoff??
>
and what if the kids are already pole lickers? you'd need tongue defrosters.
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