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

多周期换热网络改造投资费用最小化的传热面积匹配策略（英文）

作　　者：康丽霞 刘永忠 

机构地区：[1]Department of Chemical Engineering, Xi'an Jiaotong University [2]Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education

出　　处：《Chinese Journal of Chemical Engineering》2015年第7期1153-1160,共8页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(21376188,21176198)

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 retro fit 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.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 networkMulti-period operationRetrofitMatching of heat transfer areas 

分 类 号：TQ021.3[化学工程]