美国《烃加工》１９９８年６月号报道，增加对流段加热面积对节能和提高热效率有明显的效果。其中，主要的方法是在对流段加装几排管子和用翅片管代替钉头管。对大多数加热炉不需做大的改造，只要在对流段加装两排管子就可以得到较大的收益。因为大多数加热炉有加装两排管子的 The U.S. “Hydrocarbon Processing” reported in June 1998 that increasing the heating area of ​​the convection section has a significant effect on energy conservation and thermal efficiency. Among them, the main method is to add a few rows of tubes in the convection section and replace the nail tube with a finned tube. For most heating furnace without major renovation, as long as the convection section to install two rows of tubes can get greater benefits. Because most furnaces have to install two rows of tubes