In a thin-walled double-pipe heat exchanger, when is the approximation U = h i a reasonable one?

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In a thin-walled double-pipe heat exchanger, when is the approximation U = h_i a reasonable one? Here U is the overall heat transfer coefficient and h_i is the convection heat transfer coefficient inside the tube.

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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Question Posted: Dec 12, 2018 06:37 AM

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In a thin-walled double-pipe heat exchanger, when is the approximation U = h i a reasonable one?

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Fundamentals of Thermal-Fluid Sciences

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