Consider a $12$ cm high, $8-$m$-$long, and $17$ cm $-$thick wall whose representative cross section is as given in the figure. The thermal conductivities of various materials used, in $\frac{W}{m}*C,$ are $k_A=2,k_B=8,kc=20$ and $k_D=15.$ The indoor and the outdoor temperatures are $22C$ and $-4C.$ and the convection heat transfer coetficients on the inner and the outer sides are $h_t=10\frac{W}{m^{2.}}C$ and $h_0=20\frac{W}{m^{2.}}C.$ respectively. Assuming heat transfer through the wall to be one$-$dimensional.

i$.$ Draw the thermal resistance network

j$.$ Determine the convection resistance on the inner surface of the wall. $R_i$

k$.$ Determine conduction resistance, $R_A$

Determine conduction resistance. $R_R$

m $.$ Determine conduction resistance. $R_C$

n$.$ Determine conduction resistance. $R_D$

o$.$ Determine the convection resistance on the outer surface of the wall, $R.,$

p$.$ Determine total thermal resistance, $R_{t\text{t}\text{o}\text{u}\text{l}}$

q$.$ Determine the rate of heat transfer across the wall. $Q$