Quote:
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Originally Posted by Les
Would check, I make it
1.9 BTU/hr/ft2/in/F = 0.274 W/mc about the same as wood (oak~ 0.2 W/mc(Kryotherm))
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Hmmm,
1 BTU/hr = 0.2931 W
Watt/hr being summarised as merely Watts, as per convention
1.9 x 0.2931 = 0.55689
This is per foot squared, but W/mK is per meter squared, so over a larger area, need to multiply above by m^2 divided by ft^2
3.2808' per 1m
10.764ft^2 per 1m^2
0.55689 x 10.764 = 5.994
Now tranmission distance is per inch, but in metric, it's per meter, so need to divide by the number of inches per meter.
5.994 / 39.37 = 0.15225
Now difference is per degree F, but metric is per C. Need to divide by the number of F per C, which is 1.8
0.15225 / 1.8 = 0.0846
Okay, so that's a different value to above, but still styrofoam sort of values.
0.0846 W/m-K
5 points to who can point out what's wrong with the above. There probably is something wrong is all I'm saying.