Heat is transferred through a plane wall from the inside of a room at 22?C to the outside air at ??2?C. The convective heat transfer coefficients at the inside and outside surfaces are 12 and 28 W/(m2 K), respectively. The thermal resistance of a unit area of the wall is 0.5 m2 K/W. Determining the temperature at the outer surface of the wall and the rate of heat flow through the wall per unit area.GIVENHeat transfer through a plane wallAir temperatureInside wall (Ti) = 22?C and outside wall (To) = ??2?CHeat transfer coefficientInside wall ( hci ) = 12 W/(m2 K)Outside wall ( hco ) = 28 W/(m2 K)Thermal resistance of a unit area (A Rw) = 0.5 (m2 K)/WASSUMPTIONSOne dimensional heat flowSteady state has beenreached

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-Two Twi To=-2°C T= 22°C