Contact angle measurements in the refrigerant falling film evaporation process
Contact angle measurements in the refrigerant falling film evaporation process
复制标题
制冷剂降膜蒸发过程中的接触角测量
DOI:
10.1016/j.ijrefrig.2019.12.017
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发表时间:
2020-04
影响因子:
3.9
通讯作者:
Chen Jianxun
中科院分区:
文献类型:
--
作者:
Li Guoli;Liu Jinping;Xu Xiongwen;Lu Xingbin;Chen Jianxun
Rivulet is a very common form of flow during the refrigerant falling film evaporation process. In this work, a visual refrigeration cycle system is designed to observe the evaporative flow characteristics of R134a. The cross-sectional profile of the liquid film is obtained using a camera equipped with a charge-coupled device (CCD HV1351UM), after which the contact angle is measured by an edge detection technique and circle fitting under superheated conditions (0.2–1.8° C). In the image fitting process, the pixels with the largest coefficient of determination (R 2) are selected for fitting. The data show that the contact angle increases with the wall superheat because the increase in the wall superheat intensifies the evaporation at the contact line. In conclusion, we show that the measured contact angles lie close to the curve, θ= 12. 12 Δ T 0. 343.
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DOI:
10.1016/j.ijrefrig.2015.10.033
发表时间:
2016-02
期刊:
International Journal of Refrigeration-revue Internationale Du Froid
影响因子:
--
作者:
Hao Peng;Lingnan Lin;G. Ding
通讯作者:
Hao Peng;Lingnan Lin;G. Ding
影响因子:
5.2
作者:
P. Wayner;Y. Kao;L. LaCroix
通讯作者:
P. Wayner;Y. Kao;L. LaCroix
影响因子:
3.9
作者:
Pengyu Wang;Hui Ma;Gang Liu;Zhuozhan Han;Deming Guo;Tao Xu;Long Kang
通讯作者:
Pengyu Wang;Hui Ma;Gang Liu;Zhuozhan Han;Deming Guo;Tao Xu;Long Kang
影响因子:
5.2
作者:
M. Potash;P. Wayner
通讯作者:
M. Potash;P. Wayner
影响因子:
3.5
作者:
Marmur, Abraham;Della Volpe, Claudio;Drelich, Jaroslaw W.
通讯作者:
Drelich, Jaroslaw W.