微细通道内R32、R1234ze(E)及其混合工质绝热摩擦压降的实验研究  

Experimental study on the adiabatic frictional pressure drop of R32, R1234ze(E) and their mixed refrigerants in a minichannel

作　　者：刘纳 董传点 袁秋阳 李雅宁 张晓暄 姬昊 刘业毅 LIU Na;DONG Chuandian;YUAN Qiuyang;LI Yaning;ZHANG Xiaoxuan;JI Hao;LIU Yeyi(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525

出　　处：《青岛理工大学学报》2024年第6期110-117,144,共9页Journal of Qingdao University of Technology

基　　金：国家自然科学基金资助项目(52204039);山东省重点研发计划(2022CXPT051;2022RZB07055);山东省自然科学基金资助项目(ZR20220B046)。

摘　　要：通过实验研究了R32、R1234ze(E)及其混合工质在微细通道内的绝热两相摩擦压降特性,探究了质量流速、干度、饱和温度以及混合工质质量配比对微细通道内绝热流动两相摩擦压降的影响。研究结果表明:不论是单工质还是混合工质,绝热两相摩擦压降均随质量流速和干度的增加而增大,但在低干度区和高干度区增长比较缓慢;单工质和混合工质的绝热两相摩擦压降均随饱和温度的升高而下降;混合工质的绝热两相摩擦压降与R32相近。质量流速和干度对工质绝热两相摩擦压降变化影响显著,相对于质量流速和干度,饱和温度和混合工质质量配比对绝热两相摩擦压降的变化影响较小。The adiabatic two-phase frictional pressure drop characteristics of R32,R1234ze(E)and their mixed refrigerants in a minichannel were investigated experimentally,and the influences of mass flux,vapor quality,saturation temperature and the mass ratio of the mixed refrigerants on the two-phase frictional pressure drop of the adiabatic flow in the minichannel were investigated.The findings indicate that the adiabatic two-phase friction pressure drop escalates with the rising of mass flux and vapor quality for both single and mixed refrigerants,but the escalation is slow in the low and high vapor quality regions;the adiabatic two-phase friction pressure drop for both single and mixed refrigerants diminishes as the saturation temperature rises.The adiabatic two-phase friction pressure drop of the mixed refrigerants closely resembles that of R32.The effect of mass flux and vapor quality on the change of adiabatic two-phase friction pressure drop of the refrigerants is significant,and the effect of saturation temperature and mixed refrigerants mass ratio on the change of adiabatic two-phase friction pressure drop is smaller compared with that of mass flux and vapor quality.

关 键 词：微细通道 R32 R1234ze(E) 混合工质 绝热流动 两相摩擦压降 

分 类 号：TK124[动力工程及工程热物理—工程热物理]