新型恒温混水器换热性能数值研究  

Numerical Study on Heat Transfer Performance of New Type Constant Temperature Mixture

作　　者：田辉[1] 

机构地区：[1]承德石油高等专科学校机械工程系,河北承德067000

出　　处：《时代农机》2017年第6期74-75,共2页Times Agricultural Machinery

基　　金：河北省自然科学基金(E2016411008)项目;河北省高等学校科学技术研究(QN2016245)项目资助

摘　　要：在对比分析新型混水器换热原理的基础上,利用数值模拟技术对换水器内冷热水的三维流动换热过程进行了数值研究。数值计算过程采用二阶有限体积法离散控制方程,SIMPLE求解方法以及标准k-ε模型,并对计算网格进行网格无关性验证。数值计算结果显示:新型混水器可在保证混水换热效果的同时降低混水器的能量损失,且随着流量的增加本混热结构的节能效果逐渐提升。Based on the comparative analysis of the principle of heat transfer of the new type of watermill,the numerical sim-ulation technique is used to study the three-dimensional flow heat transfer process of the hot and cold water in the converter.The numerical calculation process uses the second order finite volume method discrete control equation,SIMPLE solution method and the standard k -s model,and verifies the independence of the grid.The numerical results show that the new type of water mixer can reduce the energy loss of the mixer while ensuring the effect of the mixed water heat transfer,and the energy saving effect of the mixed structure increases with the increase of the flow rate.

关 键 词：恒温混水器 换热结构 数值计算 压力损失 

分 类 号：TK114[动力工程及工程热物理—热能工程]