A Thermo pane window consists of two glass panes, all 0.32 cm thick, with a sealed layer of air of thickness 0.7 cm among them. If the inside surface temperature is 18? Cand the outside surface temperature is 1?C,
Decide the rate of energy transfer during 2.5 m2 of the window. The thermal conductivity of the glass is 0.84 W/m/?C and of the trapped air 0.0234 W/m/?C. Answer in units of W.
What is the rate of energy transfer during 2.5 m2 of a single 0.7cm thick pane of glass? Answer in units of kW.