基于Modelica/Dymola的间壁式换热器仿真研究  

Modeling and performance simulation for recupe rator heat exchangers based on Modelica/Dymola

作　　者：程超军 郝兴军 李朝伟 张建华[2] 张杰[2] 李国建[3] 

机构地区：[1]温州市燃气有限公司,浙江温州325000 [2]浙江工业大学能源与动力工程研究所,浙江杭州310014 [3]浙江理工大学建筑工程学院,浙江杭州310018

出　　处：《机电工程》2014年第4期537-540,共4页Journal of Mechanical & Electrical Engineering

摘　　要：间壁式换热器以高效的换热效率、热损失小、结构紧凑轻巧、经济性好、使用寿命长等优点,广泛应用在分布式供能系统、石油化工等领域。为了研究换热器在不同温度的冷热流体共同作用下的动态特性,采用了面向对象的方法,将换热器分解成了几何参数模块、换热单元模块、流动模块、物性参数等模块,根据质量守恒定律、动量守恒定律和能量守恒方程,采用支持面向对象、非因果和支持多领域物理系统建模的Modelica语言,在Dymola平台下建立了换热器各模块的仿真模型库HeatExchanger。以简单的平行流为例,搭建了系统仿真模型,验证了模型的准确性,分析了冷热流体在不同温度下共同扰动的动态特性。结果表明:Modelica语言简单,易于理解,建好的模型库易于维护和升级,仿真误差较小,具有很好的重用性和扩展性。Recuperative heat exchanger was widely used in the distributed power system, petrochemical and other fields with the advantages of efficient in heat efficiency, economy, compact and lightweight Structure and long service life. Aiming at researching the dynamic characteristic of the heat exchanger with the hot and cold fluid of different temperatures, an object-oriented method was employed to decompose the heat exchanger into the geometric parameters module, heat transfer module, flow module and physical property parameters module, and on the basis of the law of the conservation of mass, momentum and energy, Modelica and Dymola with multi- domain language, which is an object-oriented and incausal, were used to bulid the simulation model library of heat exchanger. Taking a simple parallel flow as an example, the system simulation model was set up and the accuracy of the model was verified, then the dynamic characteristic of the heat exchanger with the hot and cold fluid of different temperatures was analyzed. The research results indicate that, the modelica languege was simple and more easily understandable, also the built model library easy to maintain and upgrade and the errors was small enough, so it has the very good reusability and extensibility.

关 键 词：换热器 仿真 

分 类 号：TP121[自动化与计算机技术—控制理论与控制工程]