Calculate the resultant heat transfer in the presence of solar radiation across an 80 m2 south facing wall with a window-to-wall ratio of 50% when the indoor temperature is maintained at 21o C and the outdoor temperature is 15o C. Assume the SHGF= 750 W/m2 and the process is steady state. (given: The wall U-value= 0.35 W/m2 .C, wall solar absorptivity=0.5, the window U-value= 3 W/m2 .C, SC of window=0.82) (hint: ho =17 W/m2 .C, SHGC of the reference window=0.87)