Temperature distribution and governing equations for a thermalfin, adapted from Problem Set 3 solutions. (Image courtesy of MIT OCW.)
热鳍片之温度分布与统御方程序，取自习题3之解答改写。(感谢影像提供者：麻省理工学院开放式课程)。
2
Fin electric heating tube heater: large thermal inertia, stable heating power, not blocking the air flow channel, wide heating range, long service life.
翅片电热管加热器：热惰性大、加热功率稳定、不堵塞空气流通通道、加温范围宽、使用寿命长。
3
For constant fin height, the fin width that provides the best thermal performance increases with the Reynolds number. Further increasing the fin width will degrade the thermal performance.