首页 | 本学科首页   官方微博 | 高级检索  
     

水平管内二氟乙烷两相流动摩擦压降实验研究
引用本文:陈高飞,公茂琼,沈俊,邹鑫,吴剑峰. 水平管内二氟乙烷两相流动摩擦压降实验研究[J]. 物理学报, 2010, 59(12): 8669-8675
作者姓名:陈高飞  公茂琼  沈俊  邹鑫  吴剑峰
作者单位:(1)中国科学院理化技术研究所低温工程学重点实验室,北京 100190; (2)中国科学院理化技术研究所低温工程学重点实验室,北京 100190;中国科学院研究生院,北京 100049
基金项目:国家自然科学基金重点项目(批准号:50890183 )资助的课题.
摘    要:对制冷剂二氟乙烷(HFC-152a)在内径为8mm的水平管内进行了两相流动沸腾摩擦压降的实验测量.实验测量的压力范围为0.19—0.41MPa,热流密度范围为14—62kW/m2,流量范围为128—200kg/m2s.实验测量表明:HFC-152a的两相摩擦压降随质量流量、质量含气率的增大而增大;热流密度则对摩擦压降的直接影响很小,但通过影响两相流流型间接影响了摩擦压降;当流型由分层流动转变为半环状流或环状流时,总压降中加速压降所占比例有所减小,而摩擦压降所占比例则有所增大;摩擦压降随饱和压力的增大而减小.使用两个应用广泛的压降计算式进行了计算.实验测试结果与计算结果对比后发现,Friedel模型与实验结果偏差较大,而Müller-Steinhagen-Heck模型则与实验结果符合较好.

关 键 词:两相流  摩擦压降  二氟乙烷  水平管
收稿时间:2010-05-12

Two-phase frictional pressure drop of 1,1-difluoroethane in a horizontal tube
Chen Gao-Fei,Gong Mao-Qiong,Shen Jun,Zou Xin,Wu Jian-Feng. Two-phase frictional pressure drop of 1,1-difluoroethane in a horizontal tube[J]. Acta Physica Sinica, 2010, 59(12): 8669-8675
Authors:Chen Gao-Fei  Gong Mao-Qiong  Shen Jun  Zou Xin  Wu Jian-Feng
Affiliation:Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Abstract:This paper deals with an experimental investigation of two-phase frictional pressure drop behavior of 1,1-difluoroethane in an 8 mm inside-diameter smooth horizontal tube. Pressure drop characteristics are measured in a pressure range of 0.19—0.41 MPa, heat flux range of 14—62 kW/m2, and mass flux range of 128—200 kg/m2s. The effects of experimental parameters on pressure drop are analyzed. It is found that with the increases of mass flow and vapor quality, the frictional pressure drop increases. The proportion of momentum pressure drop in the total pressure drop increases slightly as heat flux increases, and accordingly the proportion of the frictional pressure drop decreases. The frictional pressure drop increases with saturation pressure decreasing. Experimental results are compared with the calculations from the two extensively used correlation formulae. Our investigations show that the Friedel model has a relatively large deviation, and the Müller-Steinhagen-Heck model accords well with the experimental results.
Keywords:two-phase flow  frictional pressure drop  1  1-difluoroethane  horizontal tube
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《物理学报》浏览原始摘要信息
点击此处可从《物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号