A $1,095f{t}^2,8in.$ thick concrete wall has inside and outside surface temperatures of $25C$ and $3C.A2in.$ insulation batt with a thermal conductivity of $k=0\mathrm{.}03Bt\frac{u}{h*ft*F}$

is added to the wall. Determine the reduction in heat transfer rate.

What is the thickness of the insulation in meters?

m

What is the thermal conductivity value of the insulation batt in $\frac{W}{m*K}?$

$\frac{W}{m*K}$

What is the $R-$value of the concrete wall $($in $m^2*\frac{K}{W})?$

$m^2*\frac{K}{W}$

What is the $R-$value of the insulation batt $($in $m^2*\frac{K}{W})?$

$m^2*\frac{K}{W}$

What is the heat transfer rate $($in W$)$ when the insulation is added?

W

What is the percent reduction in the heat transfer rate?