Design of heat exchanger network based on entransy theory

Li Xia; Yuanli Feng; Xiaoyan Sun; Shuguang Xiang

doi:10.1016/j.cjche.2017.10.007

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Design of heat exchanger network based on entransy theory

Selected Papers from the Chinese Process Systems Engineering Annual Meeting 2017 | Updated：2026-01-06

- Design of heat exchanger network based on entransy theory
- Chinese Journal of Chemical Engineering Vol. 26, Issue 8, Pages: 1692-1699(2018)
- Affiliations：
  
  Institute of Process System Engineering, Qingdao University of Science and Technology,Qingdao,China,266042
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.10.007
  CLC：
- Published：2018
- Accepted：
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Li Xia, Yuanli Feng, Xiaoyan Sun, Shuguang Xiang. Design of heat exchanger network based on entransy theory[J]. Chin.J.Chem.Eng., 2018, 26(8): 1692-1699.
DOI：

Li Xia, Yuanli Feng, Xiaoyan Sun, Shuguang Xiang. Design of heat exchanger network based on entransy theory[J]. Chin.J.Chem.Eng., 2018, 26(8): 1692-1699. DOI： 10.1016/j.cjche.2017.10.007.

摘要

Abstract

The heat exchanger network (HEN) synthesis problem based on entransy theory is analyzed. According to the characteristics of entransy representation of thermal potential energy

the entransy dissipation represents the irreversibility of the heat transfer process

the temperature difference determines the entransy dissipation

and four HEN design steps based on entransy theory are put forward. The present study shows how it is possible to set energy targets based on entransy and achieve them with a network of heat exchangers by an example of heat exchanger network design for four streams. In order to verify the correctness of the heat exchanger networks design method based on entransy theory

the synthesis of the HEN for the diesel hydrogenation unit is studied. Using the heat exchange networks design method based on entransy theory

the HEN obtained is consistent with energy targets. The entransy transfer efficiency of HEN based on entransy theory is 92.29%

higher than the entransy transfer efficiency of the maximum heat recovery network based on pinch technology.

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