Some time back Evan mentioned the temperature of the nighttime sky as being -70؛ C. I packed that away until I could think about what that means, and it turns out it means a lot of watts per meter^2 potentially radiating into the night sky.

Certain I was only the most recent person to think about this I hunted about the web to see what others have done. Something I recalled from early reading was how they cool deep space probe radioisotope thermoelectric generators (RTG's). The only way to cool anything in space (including the Earth) is by radiating heat from the object into space. The next step involved a lot of not particularly exotic math, and it turns out that this is a borderline practical energy conversion method for the HSM.

http://www.flapdoodledinghy.com/nightsky.html

So then I explored the applied side of things and discovered there's not a lot going on in this field. But I found a few interesting applications:

http://www.cbe.berkeley.edu/mixedmode/carnegie.html

http://www.buildings.com/ArticleDeta...9/Default.aspx

Anyone here done anything or seen anything on this technology?

Certain I was only the most recent person to think about this I hunted about the web to see what others have done. Something I recalled from early reading was how they cool deep space probe radioisotope thermoelectric generators (RTG's). The only way to cool anything in space (including the Earth) is by radiating heat from the object into space. The next step involved a lot of not particularly exotic math, and it turns out that this is a borderline practical energy conversion method for the HSM.

http://www.flapdoodledinghy.com/nightsky.html

So then I explored the applied side of things and discovered there's not a lot going on in this field. But I found a few interesting applications:

http://www.cbe.berkeley.edu/mixedmode/carnegie.html

http://www.buildings.com/ArticleDeta...9/Default.aspx

Anyone here done anything or seen anything on this technology?

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