The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)
A. $$\frac{{\text{K}}}{{{{\text{h}}_0}}}$$
B. $$\frac{{2{\text{K}}}}{{{{\text{h}}_0}}}$$
C. $$\frac{{{{\text{h}}_0}}}{{\text{K}}}$$
D. $$\frac{{{{\text{h}}_0}}}{{2{\text{K}}}}$$
Answer: Option B
This Question Belongs to Chemical Engineering >> Heat Transfer
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