一、最优设计自从石油危机以来,为了节约燃料,国外对加热炉提高热效率、降低能耗给予了很大的注意,取得了不少进展。但是,进一步工作发现,并非一定热效率越高,经济效益就越好。不论是设计新的加热炉,还是改进现有的旧加热炉,其经济效益受许多因素的影响。例如,燃料价格就对加热炉提高热效率的经济效益有很大影响。Bailey 曾作了一 First, the optimal design Since the oil crisis, in order to save fuel, foreign heating furnace to improve thermal efficiency, reduce energy consumption has given a lot of attention and made a lot of progress. However, further work found that not necessarily the higher the thermal efficiency, the better the economic benefits. Whether it is designing a new furnace or retrofitting an existing old furnace, the economics are affected by many factors. For example, fuel prices have a significant impact on the economic benefits of reheating furnaces to increase thermal efficiency. Bailey has made one