Chapter 9, Problem 9.17P

Consider a vertical plate of dimension $0.025\text{m}\text{×}0.50\text{m}$ in that is at $T_s=100°C$ in a quiescent environment at $T_{\infty }=20°C$ . In the interest of minimizing heat transfer from the plate, which orientation, (A) or (B), is preferred? What is the convection heat transfer from the front surface of the plate when it is in the preferred orientation?