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    Effect of Fin Structure on the Condensation of R-134a, R-1234ze(E), and R-1233zd(E) Outside the Titanium Tubes

    Source: Journal of Heat Transfer:;2020:;volume( 142 ):;issue: 001::page 014502-1
    Author:
    Ji, Wen-Tao
    ,
    Mao, Shuai-Feng
    ,
    Chong, Guo-Hun
    ,
    Zhao, Chuang-Yao
    ,
    Zhang, Hu
    ,
    Tao, Wen-Quan
    DOI: 10.1115/1.4045139
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In order to test the effect of fin structure on the condensing heat transfer of refrigerants outside the low thermal conductivity tubes, condensation of R-134a, R-1234ze(E), and R-1233zd(E) on two enhanced titanium tubes were experimentally investigated. The two tubes have basically the same fin density while the fin structures are different. One tube is a typical low-fin (two-dimensional, 2D), and the other is a three-dimensional (3D) finned tube. In experiment heat flux was in the range of 10–80 kW·m−2. It was found that at higher heat flux, the condensing heat transfer coefficient (HTC) of 3D-finned tubes was apparently lower than that of 2D-enhanced tubes. The condensing HTC of R-134a for the two tubes was the highest. R-1233zd(E) was the lowest. It was shown from experimental results that the condensing HTC for R-1233zd(E) was notably affected by the change of saturation temperature outside the 3D-enhanced tube, but was less affected by the 2D fin structures.
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      Effect of Fin Structure on the Condensation of R-134a, R-1234ze(E), and R-1233zd(E) Outside the Titanium Tubes

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4275565
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    contributor authorJi, Wen-Tao
    contributor authorMao, Shuai-Feng
    contributor authorChong, Guo-Hun
    contributor authorZhao, Chuang-Yao
    contributor authorZhang, Hu
    contributor authorTao, Wen-Quan
    date accessioned2022-02-04T22:51:00Z
    date available2022-02-04T22:51:00Z
    date copyright1/1/2020 12:00:00 AM
    date issued2020
    identifier issn0022-1481
    identifier otherht_142_01_014502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4275565
    description abstractIn order to test the effect of fin structure on the condensing heat transfer of refrigerants outside the low thermal conductivity tubes, condensation of R-134a, R-1234ze(E), and R-1233zd(E) on two enhanced titanium tubes were experimentally investigated. The two tubes have basically the same fin density while the fin structures are different. One tube is a typical low-fin (two-dimensional, 2D), and the other is a three-dimensional (3D) finned tube. In experiment heat flux was in the range of 10–80 kW·m−2. It was found that at higher heat flux, the condensing heat transfer coefficient (HTC) of 3D-finned tubes was apparently lower than that of 2D-enhanced tubes. The condensing HTC of R-134a for the two tubes was the highest. R-1233zd(E) was the lowest. It was shown from experimental results that the condensing HTC for R-1233zd(E) was notably affected by the change of saturation temperature outside the 3D-enhanced tube, but was less affected by the 2D fin structures.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEffect of Fin Structure on the Condensation of R-134a, R-1234ze(E), and R-1233zd(E) Outside the Titanium Tubes
    typeJournal Paper
    journal volume142
    journal issue1
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4045139
    journal fristpage014502-1
    journal lastpage014502-6
    page6
    treeJournal of Heat Transfer:;2020:;volume( 142 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian