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Que. The inner and outer surfaces of a furnace wall, 25 cm thick, are at 300 degree Celsius and 30 degree Celsius. Here thermal conductivity is given by the relation
K = (1.45 + 0.5 * 10¯⁵ t²) KJ/m hr deg

Where, t is the temperature in degree centigrade. Calculate the heat loss per square meter of the wall surface area?
a. 1355.3 kJ/m² hr
b. 2345.8 kJ/m² hr
c. 1745.8 kJ/m² hr
d. 7895.9 kJ/m² hr
Correct Answer:1745.8 kJ/m² hr
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