Solution Manual Heat And Mass Transfer Cengel 5th Edition Chapter 3 Official

$r_{o}=0.04m$

$Nu_{D}=0.26 \times (6.14 \times 10^{6})^{0.6} \times (7.56)^{0.35}=2152.5$

The Nusselt number can be calculated by: $r_{o}=0

$h=\frac{Nu_{D}k}{D}=\frac{10 \times 0.025}{0.004}=62.5W/m^{2}K$

The current flowing through the wire can be calculated by: $r_{o}=0

$\dot{Q}=h \pi D L(T_{s}-T_{\infty})$

$h=\frac{Nu_{D}k}{D}=\frac{2152.5 \times 0.597}{2}=643.3W/m^{2}K$ $r_{o}=0

Solution: