基于温差均匀性原则的换热网络夹点设计法  

Pinch design method for heat exchanger networks based on the uniformity principle of temperature difference field

作　　者：万义群[1] 崔国民[1] 彭富裕[1] 许海珠[1] 

机构地区：[1]上海理工大学新能源科学与工程研究所

出　　处：《石油与天然气化工》2013年第6期555-560,共6页Chemical engineering of oil & gas

基　　金：国家自然科学基金资助项目"大规模系统全局热集成的结构性能连续性原理"(51176125);教育部博士点基金项目"应用广义换热器网络进行能量梯级有效利用研究"(200802520007);上海市人才发展资金资助计划"大规模换热网络MINLP问题整形变量的物理松驰及优化"(2009022)

摘　　要：对换热网络的传统夹点设计法进行了改进。将换热网络组合曲线分成若干段单独处理,以温差均匀性因子作为评价指标设计各段网络结构,将各段设计的结构及远离夹点处的匹配组成完整的换热网络初始结构,采用牛顿法优化初始结构的换热器单元,以达到调优的目的,最终获得具有最优年综合费用的换热网络结构。通过具体算例表明,依据温差均匀性原则设计的换热网络具有较好的换热性能,且最终的年综合费用优于其他文献报导的数据,验证了该方法的有效性。Traditional pinch design method of heat exchanger networks is improved,the composite curve is divided into several segments for individual treatment,the network of every segment using the uniformity factor of temperature difference of heat exchanger networks as the evaluation index is designed,the structures of every segment and the matches far form the pinch are combined into an integrated original heat exchanger network,the original structure using Newton method as regulation optimization is optimized,and an optimal cost heat exchange network finally is obtained.From a specific example,the heat exchanger network designed according to the uniformity principle of temperature difference field is of better heat transfer performance, the final annual cost is better than that of other literature,and the availability of this method is validated.

关 键 词：温差均匀性原则 换热网络 夹点 

分 类 号：TK124[动力工程及工程热物理—工程热物理]