Consider a $1\mathrm{.}70$ m$-$high and $1\mathrm{.}25$ m$-$wide glass window whose

thickness is $7\mathrm{.}00$ mm and thermal conductivity is k$=0\mathrm{.}785$ W$/$m$.$K$.$

Determine the steady rate of heat transfer through this glass window

and the temperature of its inner surface for a day during which the

room is maintained at $21\mathrm{.}0$C while the temperature of the outdoors

is $4\mathrm{.}00$C$.$ Take the convection heat transfer coefficients on the inner

and outer surfaces of the window to be h$1=15\mathrm{.}0$ W$/$m$2.$K and h$2=27\mathrm{.}0$

W$/$m$2.$K and disregard any heat transfer by radiation