Discussion :: Heat and Mass Transfer
- The heat transfer by conduction through a thick cylinder (Q) is given by (where T₁ = Higher temperature, T₂ = Lower temperature, r₁ = Inside radius, r₂ = Outside radius, l = Length of cylinder, and k = Thermal conductivity)
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A.
Q = [2πlk (T₁ - T₂)]/2.3 log (r₂/r₁) |
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B.
Q = 2.3 log (r₂/r₁)/[2πlk (T₁ - T₂)] |
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C.
Q = [2π (T₁ - T₂)]/2.3 lk log (r₂/r₁) |
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D.
Q = = 2πlk/2.3 (T₁ - T₂) log (r₂/r₁) |
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Answer : Option A
Explanation :
The heat transfer by conduction through a thick cylinder (Q) is given by
Q = [2πlk (T₁ - T₂)]/2.3 log (r₂/r₁)
where T₁ = Higher temperature, T₂ = Lower temperature, r₁ = Inside radius, r₂ = Outside radius, l = Length of cylinder, and k = Thermal conductivity
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