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Old 05-06-2014, 05:20 PM   #26 (permalink)
aerohead
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thermal conductivity

Quote:
Originally Posted by freebeard View Post
Insulating Paint Additive Makes Paint Insulate

My point was that, given the small surface area, with a relatively thin high-performance wall you could heat it with a large dog.

I don't know how to translate thermal conductivity to R-value.
The heat transfer coefficient (U) is the inverse of the R-Factor.
Greater the R,the lower the U,and smaller the heat lost/gained,depending on what side your on,given any delta-T.
This is for conduction only.
Considering that with a 3-season mummy bag inside a 3-season sleeping bag,that one can survive -30 F inside a tent with rain fly,the small surface area high performance wall and supplemental canine heating makes perfect sense.
I borrowed some Btus from femme-bot's Golden Labrador this last winter.
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