Question: Heat is transferred by conduction from a classroom through its four walls. The room dimension LxWxH is 20 x 10 x 5 m and

Heat is transferred by conduction from a classroom through its four walls. The room dimension LxWxH is 20 x

Heat is transferred by conduction from a classroom through its four walls. The room dimension LxWxH is 20 x 10 x 5 m and its wall thickness is 300 mm. The classroom's internal wall temperature is 24 C and the outer wall temperature is 5 C. The thermal conductivity of an un-insulated solid wall is 1.1 W m K. Calculate the cost of energy lost in 30 days considering the temperatures are kept constant over the 24 hours of the day and the price of kWh for heating the classroom from gas is 0.07. Enter your numerical value in pounds up to 2 decimal points Add your answer

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