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Re: GBlist: Hemp Insulation?
Mark,
Thanks for the conversion. I really should invest in a copy of MEEB.
>Multiply Btu/hFft2 (conductance) by 5.673 to get watts per kelvin per
>square meter
If I understand correctly I would divide watts per degree kelvin per
square meter by the conversion factor to get thermal conductance
(U-value). So here goes:
.13
------ = U .02255
5.673
Now to convert U to R-value.
1
----- = R 44
.02255
R-44 doesn't seem entirely unreasonable, since there's no indication of
thickness. This could be a ceiling full. However, the other value given
for the lower density works out to R-118.
I think I'm doing something wrong here.
Maybe some of our British or Austrailian friends could help out a poor
metric-impaired Yankee. How would these thermal conductance values
compare with other insulation materials?
From my original post:
In one place the specs say the density is 110 Kg/m3 and the thermal
conductivity is 0.048 W/m K. In another place it says the density is
350-500 Kg/m3 and the thermal conductivity is 0.13 W/m K.
Thanks
Bruce S
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Bruce Sullivan Tel: 541-484-9353
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