作　　者： ; ;

机构地区： 华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室

出　　处： 《能源工程》 2010年第1期56-59,共4页

摘　　要： 介绍了夹点技术基本原理及其在换热网络优化设计中的原则。利用ASPEN Pinch软件设计了一个有三股热股流、两股冷股流的换热网络,求得最优夹点温差是23.7℃,设计时取值23℃。夹点温差分别取10、23、30℃进行换热网络初步优化设计,在相同换热器情况下,三者的总费用分别是44279、41931、42156美元/a。这证明采用最优夹点温差的换热网络经济性最好。 The basic theory of pinch technology and the optimum design principles of its application in designing the heat exchanger network（HEN） were introduced. A HEN with three hot streams and two cold streams was designed by ASPEN Pinch software and the optimum pinch temperature difference（PTD） was calculated, which was 23.7℃. 23℃ was chosen as the real designed operation value. Three HENs for the same problems with three different PTD values of 10,23,30℃ were designed, and the total costs of three types of HENs were 44279（ 10℃ ） ,41931 （23℃） and 42156 （30℃） $/year respectively with the same exchangers. The results showed that the HEN designed with the optimum PTD value has a better economical efficiency than the others.

关 键 词： 夹点技术 换热网络 设计原则 最优夹点温差 能量回收

领　　域： [动力工程及工程热物理]