In a furnace the heat loss through the 150 mm thick refractory wall lining is estimated to be 50 W/m2. If the average thermal conductivity of the refractory material is 0.05 W/mK, the temperature drop across the wall will be:

In a furnace the heat loss through the 150 mm thick refractory wall li

1.	In a furnace the heat loss through the 150 mm thick refractory wall lining is estimated to be 50 W/m2. If the average thermal conductivity of the refractory material is 0.05 W/mK, the temperature drop across the wall will be:
A.	140°C
B.	150°C
C.	160°C
D.	170°C
Answer» C. 160°C

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In a furnace the heat loss through the 150 mm thick refractory wall lining is estimated to be 50 W/m2. If the average thermal conductivity of the refractory material is 0.05 W/mK, the temperature drop across the wall will be:

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