1.

Water flows through a tube of diameter 25 mm at an average velocity of 1.0 m/s. The properties of water are = 1000 kg/m3, = 7.25 104 Ns/m , k = 0.625 W/mK, Pr = 4.85. Using Nu = 0.023 Re0.8 Pr0.4, the convective heat transfer coefficient (inW/m K) is _______

A. None of the above
Answer» B.


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