i don’t really understand this methodology. for instance in example 16.1 in ballast blue book it gives various R values. and these R values are provided for specific materials in specific thicknesses, yes? then there is brick which is provided with a value of 0.11/inch which you multiple by the brick thickness to get the whole R value of the unit (3.625”x0.11R/“=0.4). then instead of an R value for GWB they give a C of 2.22 which you invert (1/2.22=0.45). now you are set up to sum R’s so you can invert it to get an overall U (or coefficient of heat transmission) for the wall section (or whatever). but the text says “The R and C values for the various components are given in the table. however they must be converted to /conductances/ (my emphasis) for the thicknesses used.” and i don’t see any conductance (k) used. it seems to me i just used the R values and converted a C to R. then - well them it seems like i was given a k value for the brick (?) of 0.11/inch and converted the conductance to a R by multiplying by the thickness per inches. is the text a typo here basically? A. am i missing something? B. how eoin you need to use k exactly? just like i used it? i mean you would never convert an R value to k would you? thanks
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