Question

Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re^0.8 . Prⁿ, is not valid, if the value of

a.

n = 0.4 is used for heating.

b.

n = 0.3 is used for cooling.

c.

Reynolds number for the flow involved is > 10000.

d.

Reynolds number for the flow involved is < 2100.

Answer: (d).Reynolds number for the flow involved is < 2100.

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Q. Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re^0.8 . Prⁿ, is not valid, if the value of

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