Question

When the heat transfer taking place by convection from a verticle plate of length 0.609 m height to a fluid, having a temp of 30C, and thermal conductivity of $33\times {10}^{-3}$ W/mK, plate K = 22.1 W/mk with a Nusselt number of 79. The heat transfer coefficient $W/m^{2}K$ is

• A. 6.3
• B. 5.3
• C. 4.3
• D. 0.12

Answer 1

The correct option is C 4.3


$(k{)}_{fluid}=0.033W/mK$

Nusselt Number (Nu) = 79

$NusseltNumber\left(Nu\right)=\frac{h.L}{(k{)}_{fluid}}=79$

$h=\frac{79\times 0.033}{0.609}=4.28W/m^{2}K$