Manufacturing of microstructures with preventing frost accretion effect: Interaction of microstructures, wettability, and ultrasonic vibration

Research output: Contribution to conferencePaperpeer-review

Abstract

Frost formation is one of the natural phenomena and it causes many industrial problems. Frost has been usually removed by heating and deicer spraying to melt but they have recently been concerned about the defrost cost. Therefore, we tried to clarify the effect of preventing frost growth on the surface wettability and the microstructures on the cooling surface. Firstly, four samples with different wettabilities, as-mirror-finishing, hydrophilic, hydrophobic and superhydrophobic, were prepared by mirror-finishing and coating and two types of experiments, with and without ultrasonic vibration, were conducted. The results showed that the hydrophobic surface improved the frost reduction effect with the ultrasonic vibration because it might lower the mechanical strength of frost. On the other hand, the frost grew strongly on the hydrophilic surface and was not separated from its surface. Then, microstructured samples, rectangle-shaped projection on the surfaces, were created and experimented with cooling. The results suggested that the frost grew on the top of the structures due to the water supply caused by the heat convection.

Original languageEnglish
Pages1011-1016
Number of pages6
Publication statusPublished - 2017
Event20th International Symposium on Advances in Abrasive Technology, ISAAT 2017 - Okinawa, Japan
Duration: 2017 Dec 32017 Dec 6

Conference

Conference20th International Symposium on Advances in Abrasive Technology, ISAAT 2017
CountryJapan
CityOkinawa
Period17/12/317/12/6

Keywords

  • Crystal growth
  • Microstructure
  • Wettability

ASJC Scopus subject areas

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Manufacturing of microstructures with preventing frost accretion effect: Interaction of microstructures, wettability, and ultrasonic vibration'. Together they form a unique fingerprint.

Cite this