Wall Contruction, Temp At Each Layer
Wall Contruction, Temp At Each Layer
(OP)
Hi All,
I have a wall that i have calculated the u-vlaue for but i now need to find the temperarure at each of the layers that build up to make the wall. I have the internal and external temperatures and the resistances of the components that build up to make it. Is there any kind of formula?
Cheers
I have a wall that i have calculated the u-vlaue for but i now need to find the temperarure at each of the layers that build up to make the wall. I have the internal and external temperatures and the resistances of the components that build up to make it. Is there any kind of formula?
Cheers





RE: Wall Contruction, Temp At Each Layer
TTFN
RE: Wall Contruction, Temp At Each Layer
So my calc will look like this
R1+R2+R3+R4+R5
=Rt (Toal Series Resistance)
My delta T is 23c
Rt / delta t = power per unit
Resistance of layer / power per unit = Temp at that layer!?
RE: Wall Contruction, Temp At Each Layer
If you are doing this for a house design, bear in mind that what the insulation nominal R values are and what you actually get in service vary considerably. Without good air barrier installation, a cold windy day can cut an R-19 nominal value in half. Then there is thermal bridging through all that wood connecting inside to outside, anywhere from 12 to 18% of the total wall area. But there are plenty of sites with good info on good wall design for thermal efficiency.