R

Ruchi Sharma • 9.87K Points
Tutor III

Q. 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.

  • (A) 0.01
  • (B) 0.1
  • (C) 0.25
  • (D) 0.5
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