正六边形板式换热器的热力学分析  

THERMODYNAMIC ANALYSIS ON THE REGULAR HEXAGONAL PLATE HEAT EXCHANGER

作　　者：杜文静[1] 王飞[1] 张士虎[1] 高绪栋[1] 程林[1] 

机构地区：[1]山东大学热科学与工程研究中心,山东济南250061

出　　处：《工程热物理学报》2010年第10期1763-1766,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助项目(No.2007CB206900);山东省自然科学基金资助项目(No.Q2007F07)

摘　　要：本文提出了一种新型的正六边形球面肋板式换热器,并对该换热器进行了基于熵产数的热力学分析。通过数学推导给出了换热器中局部熵产的计算公式,该公式是数值模拟计算求解换热器中局部熵产和总熵产的通用公式。借助数值分析软件ANSYS CFX 12.0,建立了换热器的三维物理模型,采用有限容积法对流体在球面肋形成的流道中的流动进行了热力学分析。得到了板片上由有限温差导热和阻力引起的熵产的具体分布情况,以及熵产数随雷诺数的变化规律,为后续板片的优化设计工作提供了参考。A novel Regular Hexagonal Plate Heat Exchanger is put forward in this paper and thermal analysis based on the entropy generation is explored. In the beginning of the paper the expression for the calculation of the local entropy generation in heat exchangers is deduced, which is a general formula applicable for the calculation of the local and total entropy generation in numerical simulation procedures. By the CFD software ANSYS CFX 12.0, the 3 dimensional physical model of the heat exchanger is established and with the finite volume method thermal analysis is performed in the flow path formed by novel spherical ribs in the plate. Detailed distribution of the entropy generation rate in the plate is schematically shown and the variation of the entropy generation number with respect to the Reynolds number is summarized, which provides reference for the future optimization design of the plate.

关 键 词：正六边形板式换热器 球面肋 熵产 

分 类 号：TK124[动力工程及工程热物理—工程热物理]