根据换热器对数平均传热温差校正因子与换热器进出口温度之间的关系 ,指出了单壳程偶数管程换热器在可操作条件下的最大温度交叉程度 .在此基础上 ,根据换热器投资费用同壳程数的关系 ,提出了基于壳程数的换热网络综合的数学模型 ,并采用遗传模拟退火算法进行了求解 .实例表明该模型对求解实际工程换热网络是有效的 Based on the relationship between the logarithm average heat transfer temperature difference correction factor and the inlet and outlet temperature of the heat exchanger, the maximum temperature crossover degree of the single-shell, even-numbered tube heat exchanger under the operable condition is pointed out , According to the relationship between heat exchanger investment cost and shell number, a mathematical model of heat exchanger network based on shell number is put forward and solved by genetic simulated annealing algorithm.Examples show that this model is very useful for solving practical engineering heat exchange network It is effective