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Passive refrigerator--in Nature and in MIT News

 
Joshua Myrvaagnes
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Mind blown.  Cooling by as much as 40C below ambient temperature in dry climates.  Allows emission in infrared rays.

Thoughts?
IMG_20190305_225233839.jpg
[Thumbnail for IMG_20190305_225233839.jpg]

10 humans raise one child https://www.kickstarter.com/projects/positiverealfutures/an-actually-fun-tv-show-about-a-future-with-real-hope

 
frank li
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A heat transducer....?  I have no idea what to call it, but its cool that it can exploit lowering resistance to heat loss by selective radiation. A reverse selective absorber like solar thermal absorbers.

Always cool when a materials arrangement can do work without moving parts. High technology if it is practical and works.
 
C. Letellier
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Country oriented nerd with primary interests in alternate energy in particular solar. Dabble in gardening, trees, cob, soil building and a host of others.

 
Natural gas heat uses 20 tons out of 30. This tiny ad is carbon neutral.
grow your own garden and build your own home in the gardening gardeners program
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