| 基于最优夹点温差的换热网络优化设计 |
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| 引用本文： | 杨宏军,李静. 基于最优夹点温差的换热网络优化设计[J]. 能源工程, 2010, 0(1): 56-59 |
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| 作者姓名： | 杨宏军 李静 |
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| 作者单位： | 1. 华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640;广东海洋大学,工程学院,广东,湛江,524088
2. 华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640 |
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| 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ASPENPinch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。
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| 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 |
The optimization design of heat exchanger network based on the optimum pinch temperature difference |
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| YANG Hong-jun,LI Jing. The optimization design of heat exchanger network based on the optimum pinch temperature difference[J]. Energy Engineering, 2010, 0(1): 56-59 |
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| Authors: | YANG Hong-jun LI Jing |
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| Affiliation: | 1.Key Laboratory of Enhanced Heat Transfer and Energy Conservation/a>;Ministry of Education/a>;South China University of Technology/a>;Guangzhou 510640/a>;China/a>;2.College of Engineering/a>;Guangdong Ocean University/a>;Zhanjiang 524088/a>;China |
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| Abstract: | 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. |
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| Keywords: | pinch technology heat exchanger network design principles optimum pinch temperature difference energy recovery |
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