The heat loss rate Q (in W/m) through a certain cylindrical pipe insulation is given by

where T₁ is the temperature inside the insulation, T₂ is the temperature outside the insulation, and r₁ and r₂ are the inside and outside radii of the insulation, respectively. Find the heat loss rate if T₁ = 145°C,T₂ = 15.0°C,r₁ = 1.50in., and r₂ = 2.50 in.

Transcribed Image Text:

Q = 2T (0.040)(T₁T₂) In(r₂/r₁)