有机朗肯循环系统换热设备仿真研究

doi:10.12052/gdutxb.200167

摘要/Abstract

摘要： 有机朗肯循环(Organic Rankine Cycle，ORC)在中低温热能发电方向具有广阔的应用前景。换热器是ORC的重要部件，然而当前对于换热器偏离设计工况运行性能的研究尚不够深入。本文提出了偏离设计工况运行条件下换热器分区仿真建模方法，建立了换热器仿真模型并通过实验验证。经验证，蒸发器和冷凝器仿真与实验的换热量最大误差分别为3.74%和3.20%。在模型验证基础上，对ORC中换热器偏离设计工况运行特性进行了分析，获得了换热器偏离设计工况运行特性和换热面积迁移规律，定义并获得了换热器当量换热系数，为ORC中换热器设计及系统运行提供了指导。

关键词: 有机朗肯循环, 换热设备, 仿真, 实验

Abstract: Organic Rankine Cycle have numerous potential applications in thermal power generation at medium-to-low temperatures. Heat exchanger is an important part of ORC, but the research on the off-design conditions performance of the heat exchanger is not enough. A simulation modeling approach of the heat exchanger under off-design conditions is proposed in this paper and the simulation model of the heat exchanger is established and verified by experiments. According to the verification, the maximum error of heat transfer quantity between simulation and experiment of evaporator and condenser is 3.74% and 3.20% respectively. On the basis of the model validation, the performance of the heat exchanger in ORC are evaluated, the off-design conditions performance and the thermal transfer area migration regulations of the heat exchanger are obtained, and the equivalent heat transfer coefficient of the heat exchanger is defined and obtained, which provides guidelines for the design of the heat exchanger and the application of the device in ORC.

Key words: Organic Rankine Cycle, heat exchanger, simulation, experiment

中图分类号:

TK151

罗俊伟, 罗向龙, 郑晓生, 陈健勇, 梁颖宗, 杨智, 陈颖. 有机朗肯循环系统换热设备仿真研究[J]. 广东工业大学学报, 2022, 39(04): 128-134.

Luo Jun-wei, Luo Xiang-long, Zheng Xiao-sheng, Chen Jian-yong, Liang Ying-zong, Yang Zhi, Chen Ying. A Simulation Study on Heat Exchanger of Organic Rankine Cycle[J]. Journal of Guangdong University of Technology, 2022, 39(04): 128-134.

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