A plane wall with surface temperature of 350°C is attached with straight rectangular fms (...

A plane wall with surface temperature of 350°C is attached with straight rectangular fms (k = 235 W/m·K). The fms are exposed to an ambient air condition of 25°C and the convection heat transfer coefficient is 154 W/m2·K. Each fin has a length of 50 mm, a base of 5 mm thick and a width of 100 mm. Determine the efficiency, heat transfer rate, and effectiveness of each fin, using (a) Table 3–3 and (b) Figure 3–43.

FIGURE P3-122