Experimental Observation of Two Phase Flow of R123 Inside a Herringbone Microfin Tube  

Experimental Observation of Two Phase Flow of R123 Inside a Herringbone Microfin Tube

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作  者:Akio Miyara Mohammad ArifulIslam Yoshihiko Mizuta Atsushi Kibe 

机构地区:[1]Department of Mechanical Engineering,Saga University,1 Honjomachi,Saga-shi,840-8502 Japan,Graduate School of Science and Engineering,Saga University,1 Honjomachi,Saga-shi,840-8502 Japan,Graduate School of Science and Engineering,Saga University,1 Honjomachi,Saga-shi,840-8502 Japan,Graduate School of Science and Engineering,Saga University,1 Honjomachi,Saga-shi,840-8502 Japan

出  处:《Journal of Thermal Science》2003年第3期270-274,共5页热科学学报(英文版)

摘  要:Vapor-liquid two phase flow behavior of R123 inside herringbone microfin tubes has been studied. Herringbone microfin tube is a kind of internally finned tube in which microfins are installed inside the tube where the microfins form multi-V-shape in flow direction. For the present experiment three different types of herringbone microfin tubes with helix angle B = 8, 14 and 28 are used. Experimental observations showed how flow diverges and converges inside herringbone microfin tube due to fin arrangement. The effect is more remarkable for larger helix angle. From the measurements of the cross-sectional liquid flow rate distribution, the liquid removal and collection and the entrained droplet are discussed. Quantity of liquid droplets is increased with increase of helix angle. The tube with helix angle B = 28 shows higher quantity of liquid droplets than others.

关 键 词:two phase flow herringbone microfin tube flow pattern R123 

分 类 号:TK123[动力工程及工程热物理—工程热物理]

 

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