Quote:
Originally Posted by gtojohn
I think you have something there. Near R-38 for a 2x4 wall. Layered radiants have a lot of potential. The bubble wrap thing is different. Space is an extreme environment, super cold but the sun is super hot. Shade: -148°F (-100°C); Sunlight: 248°F (120°C). It makes sense they would use a heavily insulated radiant barrier. Would it turn your house into a giant faraday cage?
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I am very interested in the layered reflective insulation idea.
The real deal about the space environment is not so much the temperature extremes, it is that of the three modes of heat loss & gain:
- conductive
- convective
- radiant
Only radiant is operative, and the only way to deal with radiant heat loss/gain is with reflective methods.
But, with the issue of the Faraday Cage, I think that all the metalized materials would need to be electrically connected into a continuous surround for the Faraday Cage effect to work.
-AC