Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)?

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Stefan’s block body radiation law can also be derived from ______________ law?

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The equation, Nst = (f/2)/[1 + 5 (Npr – 1) √(f/2)], corresponds to ______________ analogy?

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In pipe flow, heat is transferred from hot wall to the liquid by__________________?

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Nusselt number is a function of Prandtl number and ______________ number of fluid in natural convection heat transfer?

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