Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies

doi:10.1016/j.cjche.2015.03.003

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (7): 1153-1160.DOI: 10.1016/j.cjche.2015.03.003

• 过程系统工程与过程安全 • 上一篇下一篇

Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies

Lixia Kang¹, Yongzhong Liu^1,2

1 Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an 710049, China

收稿日期:2014-08-03 修回日期:2014-11-03 出版日期:2015-07-28 发布日期:2015-08-21
通讯作者: Yongzhong Liu
基金资助:
Supported by the National Natural Science Foundation of China (21376188, 21176198).

Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies

Lixia Kang¹, Yongzhong Liu^1,2

1 Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an 710049, China

Received:2014-08-03 Revised:2014-11-03 Online:2015-07-28 Published:2015-08-21
Contact: Yongzhong Liu
Supported by:
Supported by the National Natural Science Foundation of China (21376188, 21176198).

摘要/Abstract

摘要： Multi-period heat exchanger network (HEN) retrofit is usually performed by targeting and matching heat transfer areas. In this paper, based on the reverse order matching method we proposed previously, three strategies of matching heat transfer areas are proposed to minimize the investment cost for the retrofit of HEN in multiperiod, in which replacement of heat exchangers, addition of heat exchangers and addition of heat transfer areas are performed. We demonstrate the procedures through three scenarios, including maximum number of substituted heat exchangers after retrofit, minimum additional heat transfer areas in the retrofitted HEN, and minimum investment cost for retrofit. The strategies are extended to a single period HEN retrofit problem. The results of multi-period and single period HEN retrofit problems indicate the effectiveness of the strategies. Moreover, these results are better than those reported in literature. The strategies are simple and easy to implement, which are of great benefit to large-scale HEN retrofit in practice.

关键词: Heat exchanger network, Multi-period operation, Retrofit, Matching of heat transfer areas

Abstract: Multi-period heat exchanger network (HEN) retrofit is usually performed by targeting and matching heat transfer areas. In this paper, based on the reverse order matching method we proposed previously, three strategies of matching heat transfer areas are proposed to minimize the investment cost for the retrofit of HEN in multiperiod, in which replacement of heat exchangers, addition of heat exchangers and addition of heat transfer areas are performed. We demonstrate the procedures through three scenarios, including maximum number of substituted heat exchangers after retrofit, minimum additional heat transfer areas in the retrofitted HEN, and minimum investment cost for retrofit. The strategies are extended to a single period HEN retrofit problem. The results of multi-period and single period HEN retrofit problems indicate the effectiveness of the strategies. Moreover, these results are better than those reported in literature. The strategies are simple and easy to implement, which are of great benefit to large-scale HEN retrofit in practice.

Key words: Heat exchanger network, Multi-period operation, Retrofit, Matching of heat transfer areas

Lixia Kang, Yongzhong Liu. Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies[J]. Chinese Journal of Chemical Engineering, 2015, 23(7): 1153-1160.

Lixia Kang, Yongzhong Liu. Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies[J]. Chin.J.Chem.Eng., 2015, 23(7): 1153-1160.

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Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies

Minimizing investment cost for multi-period heat exchanger network retrofit by matching heat transfer areas with different strategies

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