| 基于温度和热容流率同时变化的有分流换热网络弹性设计的研究 |
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| 引用本文： | 李志红,罗行,华贵,W.Roetzel.基于温度和热容流率同时变化的有分流换热网络弹性设计的研究[J].中国化学工程学报,2004,12(2):240-246. |
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| 作者姓名： | 李志红 罗行 华贵 W.Roetzel |
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| 作者单位： | [1]InstituteofChemicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China [2]DepartmentofThermalEngineering,TongjiUniversity,Shanghai200093,China [3]InstituteofThermodynamics,UniversityoftheFederalArmedForcesHamburg,D-22039Hamburg,Germany |
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| 基金项目： | Supported by the State Major Basic Research Department Program of China (No. G20000263) and the Deutsche Forschungs- gemeinschaft(DFG)(No. RO294/9). |
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| 摘 要： | A new superstructure model of heat exchanger networks (HEN) with stream splits based on rangers of streams supply temperatures and heat capacity flow rates is presented. The simultaneous optimal mathematical model of flexible HEN synthesis is established too. Firstly, the streams with rangers of supply temperatures and/or the streams with the rangers of heat capacity flow rates are pretreated; Secondly, several rules are proposed to establish the superstructure model of HEN with splits and the simultaneous optimal mathematical model of flexible HEN; Thirdly, the improving genetic algorithm is applied to solve the mathematical model established at the second step effectively, and the original optimal structure of HEN based on the maximum operation limiting condition can be obtained easily; Finally, the rules of heat exchange unit merged and the heat load of heat exchanger relaxed are presented, the flexible configuration of HEN satisfied the operation condition between the upper and down bounds of supply temperature and heat capacity flow rates can be obtained based on the original optimal structure of HEN by means of these rules. A case study demonstrates the method presented in this paper is effective
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| 关 键 词： | 热交换器 温度 流量 网络分析技术 化学过程 |
| 修稿时间： | |
Synthesis of Flexible Heat Exchanger Networks with Stream Splits Based on Rangers of Stream Supply Temperatures and Heat Capacity Flowrates |
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| LI Zhihong,LUO Xing,HUA Ben,W.Roetzel.Synthesis of Flexible Heat Exchanger Networks with Stream Splits Based on Rangers of Stream Supply Temperatures and Heat Capacity Flowrates[J].Chinese Journal of Chemical Engineering,2004,12(2):240-246. |
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| Authors: | LI Zhihong LUO Xing HUA Ben WRoetzel |
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| Affiliation: | Institute of Chemical Engineering, South China University of Technology, Guangzhou 510641, China;Institute of Chemical Engineering, South China University of Technology, Guangzhou 510641, China |
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| Abstract: | A new superstructure model of heat exchanger networks (HEN) with stream splits based on rangers of streams supply temperatures and heat capacity flow rates is presented. The simultaneous optimal mathematical model of flexible HEN synthesis is established too. Firstly, the streams with rangers of supply temperatures and/or the streams with the rangers of heat capacity flow rates are pretreated; Secondly, several rules are proposed to establish the superstructure model of HEN with splits and the simultaneous optimal mathematical model of flexible HEN; Thirdly, the improving genetic algorithm is applied to solve the mathematical model established at the second step effectively, and the original optimal structure of HEN based on the maximum operation limiting condition can be obtained easily; Finally, the rules of heat exchange unit merged and the heat load of heat exchanger relaxed are presented, the flexible configuration of HEN satisfied the operation condition between the upper and down bounds of supply temperature and heat capacity flow rates can be obtained based on the original optimal structure of HEN by means of these rules. A case study demonstrates the method presented in this paper is effective |
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| Keywords: | flexible heat exchanger networks synthesis simultaneous optimization superstructure model |
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