Problem $1$

CLO $1$

A plane wall is placed in an enclosure whose walls $T_{\text{s}\text{u}\text{r}\text{r}}=25C.$ The plane wall is also

exposed to air of $T_{}=25C.$ The wall surface temperature is $T_2=150C,$ and the surface

emissivity is $=0\mathrm{.}8.$ if the total heat loss from the wall to the room is $q_t^{\text{'}\text{'}}=10,500$

$\frac{W}{m^2}.$

a$)$ Find the radiation heat transfer from the wall to the room $q^{\text{'}\text{'}}$rad.

b$)$ Find the convection heat transfer from the pipe to the room $q^{\text{'}\text{'}}$ conv.

c$)$ Find the convection heat transfer coefficient $h.$

d$)$ Draw the thermal circuit. If $T_1=300C,$ what is $R^{\text{'}\text{'}}$ cond?

e$)$ Draw the temperature distribution.