BJN644 said:I have stove that requires floor protection with a K factor of .84, can anyone translate that into layman terms ?
Thanks
BJN644 said:I have stove that requires floor protection with a K factor of .84, can anyone translate that into layman terms ?
Thanks
castiron said:BJN644 said:I have stove that requires floor protection with a K factor of .84, can anyone translate that into layman terms ?
Thanks
k = thickness in inches/R
so, solving for "R" and we get
R = thickness/k
Example. Micore 300 I think has a K value of 0.43 so, to compute the R-value of 1 inch of it we get this
R = thickness/k
R = 1/0.43
R= 2.33
saying you need a K-value alone is not sufficient because the R-value is determined by the thickness AND the K-value. Are you sure it doesn't say something like 1-inch of material with a K-value of 0.43 is required or some other combination of thickness and K-value? If you can't find that, tell us the stove make and model and we'll look at the manual......it should give the above or an R-value
MANIAC said:castiron said:BJN644 said:I have stove that requires floor protection with a K factor of .84, can anyone translate that into layman terms ?
Thanks
k = thickness in inches/R
so, solving for "R" and we get
R = thickness/k
Example. Micore 300 I think has a K value of 0.43 so, to compute the R-value of 1 inch of it we get this
R = thickness/k
R = 1/0.43
R= 2.33
saying you need a K-value alone is not sufficient because the R-value is determined by the thickness AND the K-value. Are you sure it doesn't say something like 1-inch of material with a K-value of 0.43 is required or some other combination of thickness and K-value? If you can't find that, tell us the stove make and model and we'll look at the manual......it should give the above or an R-value
BJN644 and I have the same stove, the Harman Oakwood. I tried to attach a scan of the page from the manual but can't. Anyway it's on page 11 of the manual.
Here is a link to the manual: http://www.harmanstoves.com/doc/oakwoodm.pdf
Webmaster said:Trying to sort through all the complications, the key is that a K factor is always in inches, whereas an R factor can be given for any thickness?
The other little tidbit is that R factors tend to be used for building materials at normal room and house temperatures, so K seems to be more used in the engineering community and if often specified for a particular temperature range.
As Mike says, something with a K factor of 1 is the same an R factor of 1 (per inch), whereas something with a K factor of .5 is R of 2, and something with a K factor of 2 would be r=.5 - in other words, K x R should equal one.
UL should not (in my opinion) allow these formula in the owners manual, but should require the K and R values plus 3 examples of materials that meet them.
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