空调器水平管路内R32流动过程的流型变化规律  

Flow Pattern Change Principle of R32 in Horizontal Tube of Air Conditioner

作　　者：张浩 刘璐 詹飞龙 丁国良[2] 刘艳涛 郜哲明 ZHANG Hao;LIU Lu;ZHAN Feilong;DING Guoliang;LIU Yantao;GAO Zheming(GD Midea Refrigeration Equipment Co.,Ltd.,Shunde 528311,Guangdong,China;College of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]广东美的制冷设备有限公司,广东顺德528311 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《制冷技术》2022年第2期1-6,共6页Chinese Journal of Refrigeration Technology

摘　　要：为了研究采用5 mm管的R32空调系统的传热和压降特性,需要掌握R32在空调管路内的气液两相流型变化规律。本文采用经典流体体积(VOF)界面追踪方法来模拟不同气液相表观速度入口条件下的R32流动过程,获得5 mm空调器水平管路内R32的流型变化规律。模拟工况涵盖空调系统正常运行的制冷剂质量流量为10~110 kg/h及干度为0~0.7。模拟预测结果表明,预测的水平管内充分发展后的分层流、弹状流、环状流和泡状流的流型与现有文献中实验照片的吻合度较好;基于该流型模拟方法得到的R32流型图与Baker经验流型图吻合良好,可用于预测制冷空调的5 mm水平管内R32的流型转变规律。In order to investigate the heat transfer and pressure drop characteristics of air conditioning system adopting tubes with 5 mm diameter,the gas-liquid two phase flow pattern change principle of R32 in tubes of air conditioning system should be known.In this paper,the classical volume of fluid(VOF)interface tracking method is used to simulate the R32 flow process under different inlet conditions of gas-liquid phase apparent velocity,and thus to obtain the flow pattern change law of R32 in the horizontal tube with 5 mm diameter.The simulated conditions cover the refrigerant mass flow rate ranging from 10 to 110 kg/h and the quality ranging from 0 to 0.7.The simulation results show that the predicted flow patterns of fully developed stratified flow,slug flow,annular flow and bubble flow in the horizontal pipe are in good agreement with the experimental photographs in the existing literature.The R32 flow pattern obtained based on this flow simulation method is in good agreement with the Baker empirical flow pattern,and can be used to predict the flow pattern transition law of R32 in a 5 mm horizontal tube of refrigeration air conditioner.

关 键 词：空调器 两相流型 模拟方法 水平管 

分 类 号：TB611[一般工业技术—制冷工程] TB657.2