A Vertical Node-wise Non-structural Superstructure Model for Heat Exchanger Network Optimization

Abstract

Abstract: As node-wise non-structural superstructure model is applied to heat exchanger network optimization, heat exchanger crossover may appear. It is found that crossover structure causes an increase of total heat transfer area for heat exchange unit with same heat loads. At the same time, it reduces obviously computational efficiency of the algorithm. A vertical node-wise non-structural superstructure model is established. Compared with node-wise non-structural superstructure, the vertical node-wise non-structural superstructure model reduces computational complexity in the optimization process and eliminates adverse effects of crossover structure, which improves efficiency and accuracy of optimization. Finally, optimization performance of RWCE algorithm based on vertical non-structural superstructure model is analyzed in two examples. The results are superior to those in literature.

Key words: node-wise non-structural superstructure model, crossover structure, heat exchanger network optimization, vertical node-wise non-structural superstructure model

CLC Number:

TK124

LI Wanzong, CUI Guomin, SUN Tao, XIAO Yuan. A Vertical Node-wise Non-structural Superstructure Model for Heat Exchanger Network Optimization[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2020, 37(4): 448-458.

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