Solution Manual Heat And Mass Transfer Cengel 5th Edition Chapter 3 Apr 2026

$\dot{Q} {rad}=\varepsilon \sigma A(T {skin}^{4}-T_{sur}^{4})$

The convective heat transfer coefficient is:

$\dot{Q}_{conv}=150-41.9-0=108.1W$

A 2-m-diameter and 4-m-long horizontal cylinder is maintained at a uniform temperature of 80°C. Water flows across the cylinder at 15°C with a velocity of 3.5 m/s. Determine the rate of heat transfer.

Solution:

$Re_{D}=\frac{\rho V D}{\mu}=\frac{999.1 \times 3.5 \times 2}{1.138 \times 10^{-3}}=6.14 \times 10^{6}$