摘要
采用节点非结构模型(NNM)优化换热网络时,节点位置的合理配置对网络拓扑结构和优化结果有重要影响。在分析NNM的优化性能时发现,优化结果中分流结构主要出现在具有较大换热潜能的流股上。因此,提出了分流结构匹配策略,该策略可根据各流股的换热潜能对流股分流结构进行调整,使换热潜能较大的流股保留更多的分流结构,促进潜在优势结构的生成。将该策略改进后的算法用于优化9SP和15SP算例,所获优化结果比公开文献最优年综合费用低17 046$/a和4 418$/a,且改进后的模型与算例的适配度较高。
When using nodes-based non-structural model(NNM) to optimize the heat exchanger network, the reasonable configuration of the nodes′ positions in the network has a guiding effect on network topological structure and optimization results.When analyzing the optimization performance of the NNM,it is found that the splitting structures mainly appear on the processing streams which have larger heat exchange potential.Therefore, the splitting structure matching strategy is proposed for retrofitting the NNM.This strategy can adjust the splitting structures according to each processing stream′s heat exchange potential, resulting in retaining more splitting structures for some processing streams which having larger heat exchange potential, so as to promote the generation of potential optimization structure.Applying the improved algorithm of proposed strategy to optimize 9 SP and 15 SP,the obtained results are respectively 17 046 $/a and 4 418 $/a lower than the best annual comprehensive costs in open literatures.Moreover, the improved model fits well with the calculation example.
作者
陈家星
徐玥
崔国民
胡恩锴
CHEN Jia-xing;XU Yue;CUI Guo-min;HU En-kai(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,200093;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai,China,200093;School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai,China,200093)
出处
《热能动力工程》
CAS
CSCD
北大核心
2022年第5期1-8,共8页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(21978171,51976126)。
关键词
换热网络优化
节点非结构模型
分流结构
节点配置
优化质量
heat exchanger network synthesis
nodes-based non-structural model
splitting structure
nodes′distribution
optimization quality
