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    Fluid flowing through a tube at 1.3 m/s has a film heat transfer coefficient of 130 W/m^2 K. If the velocity of fluid is increased to 2.3 m/s, what does the film heat transfer coefficient become?


    pic is soloution and formula but i dont get it
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    What is it that you do not understand?
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    It's just ratios. The problem is that h won't change linearly with v. Hence you have to mess about with the correlation.

    Odd question really.

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