A double-pane window consists of two glass sheets each of area `1m^(2)` and thickness `0.01m` separated by a `0.05 m` thick stagnant air space. In the steady state, the room glass interface and the glass outdoor interface are at constant temperature of `27^(@)C` and `0^(@)C`, respectively.
`(a)` Calculate the rate of heat flow through the window pane.
`(b)` Find the temperatures of other interfaces.
[Take: thermal conductivities as `K_(glass)=0.8Wm^(-1)K^(-1)` and `K_(air)=0.08Wm^(-1)K^(-1)`]

Answer

`41.53` watt, `26.48^(@)C, 0.55^(@)C`