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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:

2016年02期

Page:

54-

Research Field:

能源与动力工程

Publishing date:

Info

Title:

Effects of Surface Characteristics on Frozen Water Droplets Removalfrom Cold Surface by Means of Ultrasound

Author(s):

Qian Chenlu¹; ²; Wang Xin¹; ²; Li Dong¹; ²; Zhu Lin¹; ²; Zhao Xiaobao¹; ²

（1.School of Energy and Mechanical Engineering，Nanjing Normal University，Nanjing 210042，China）（2.Engineering Laboratory of Energy System Process Conversion and EmissionReduction Technology of Jiangsu Province，Nanjing 210042，China）

Keywords:

surface characteristic; ultrasound; frozen water droplets; surface contact angle; removal probabilities

PACS:

TK124

DOI:

10.3969/j.issn.1672-1292.2016.02.009

Abstract:

Effects of surface characteristics on frozen water droplets removal from cold surfaces by ultrasound are experimentally studied and comparative analysis of effects of ultrasound are carried out on the removing of frozen water droplets with different size and freezing time from cold surface with different surface characteristics. The experimental results indicate that the frozen water droplets on cold surfaces can be instantaneously removed by ultrasound and the removal probabilities of frozen droplets gradually increase with the increase of surface contact angle. It is also found that the surface characteristics can significantly affect the removal of frozen water droplets in bigger size and longer freezing time. In addition，compared with the ordinary aluminum surface，the frozen water droplets on cold surface with surface contact angle of 136° can be completely removed by means of ultrasound. The experimental results provide a data support for hydrophobic surface applied in the ultrasonic anti-frost/defrosting.

References:

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Last Update: 2016-06-30