1670Chemical EngineeringMedium
A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ________ metre?
A0.5
B0.1
C0.01
D0.25
Correct answer
B. 0.1
Explanation
The correct answer is 0.1.