Question

On a still -10°C day, an air film coats the inside of a single glazed glass (k= 0.84 Wm^-1 K ^-1) window. The window is 75 cm by 1m has 3mm thick glass . Assume h= 10. The inside temperature is 20°C . Find the rate of thermal energy flow .

Answer 1

$$P=k\frac{A\Delta T}{h}\\P=0.84\frac{(0.75)(1)(30)}{0.003}=6300\ W$$