摘要
燃气蒸汽联合循环发电厂已经得到了迅速发展．对于燃油或天然气型和ＩＧＣＣ型联合循环，其循环热效率的影响因素很多．作者用全微分的方法分析了这些影响因素波动对循环热效率的影响以及这些因素的影响次序，从而得到了在选择联合循环组成时，为获得高的循环效率所要考虑的因素．
The power station with gas steam combined cycle has developed at great speed. There are a lot of reasons affecting its thermal efficiency. The effects of these factors and effect sequence have been analyzed in this paper with the method of total differential, which is important in the choice of system in order to get higher effciency.
