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What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2.°K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2.°K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively. Correct Answer 2

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