This paper discusses the combined system which includes the heat exchanger network and the steam-power system.A new method named Grand Coinposite Curve Interation is proposed. 本文對由換熱網(wǎng)絡(luò )和蒸汽動(dòng)力系統組成的聯(lián)合系統進(jìn)行了綜合研究,提出了聯(lián)合系統優(yōu)化的總組合線(xiàn)迭代法。