Nitrogen at atmospheric pressure is to be heated from


Nitrogen at atmospheric pressure is to be heated from 60°F to 120°F in smooth-walled tubes whose inside walls are maintained at 140°F. If the inner diameter is I in. and the average velocity of the nitrogen is 28 ft/sec, what is the required tube length? If a shorter tube is required to accomplish the same degree of heating for the same volumetric flow rate, should the tube diameter be smaller or larger than

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Mechanical Engineering: Nitrogen at atmospheric pressure is to be heated from
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