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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The given heat transfer coefficient equation for forced convection, Nu = 0.023 Re^0.8 Pr^n, is typically valid for turbulent flow conditions, which are generally considered to occur when the Reynolds number (Re) is greater than 4000. When the Reynolds number is less than 2100, the flow is considered laminar, and this equation may not accurately predict the heat transfer coefficient for laminar flow conditions.

Heat Transfer Co-Efficient Equation for Forced Convection, Nu = 0