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# Heat Transfer, Why the ratio of (thermal resistance of conduction)/(thermal resistance of convection) must be...

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Mechanical Engineering

# Heat Transfer,

Why the ratio of (thermal resistance of conduction)/(thermal resistance of convection) must be less than .1 for a system to lumped.

 

Answer & Explanation Solved by verified expert
3.7 Ratings (533 Votes)
Biot Number It is the ratio of internal resistance of body which is conduction resistance to external resistance which is heat convection It is key parameter for applying Lumped System Analysis    See Answer
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