一般高压和超临界压力锅炉中再热器的出口段都布置在较高的烟温区。在这种情况下,由于再热器必须保证最小的压降,所以再热器管采用强化冷却的可能性受到很大的限制。采用纵向内肋片管是降低管壁温度的可资采用的方法之一。波多尔斯克机器制造厂曾从原理上进行过研究,认为用这种方法来降低壁温是可能的 General high pressure and supercritical pressure boiler reheater exit section are arranged in the higher smoke temperature zone. In this case, the possibility of enhanced cooling of the reheater tubes is greatly limited as the minimum pressure drop must be guaranteed for the reheater. The use of longitudinal finned tube is to reduce the wall temperature of one of the methods available. Podolsk machine factory had conducted a study on the principle that the method used to reduce the wall temperature is possible