Experimental investigation of frost retardation for superhydrophobic surface using a luminance meter
- Authors
- Kim, Donghee; Kim, Hisuk; Kim, Sun Woo; Kim, Dong Rip; Lee, Kwan-Soo
- Issue Date
- Aug-2015
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Surface treatment; Superhydrophobic; Frost stage; Contact angle; Frost retardation
- Citation
- INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.87, pp.491 - 496
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
- Volume
- 87
- Start Page
- 491
- End Page
- 496
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156633
- DOI
- 10.1016/j.ijheatmasstransfer.2015.04.042
- ISSN
- 0017-9310
- Abstract
- We experimentally investigated the phenomena of frost retardation in terms of the heat exchanger fins with various water contact angles under normal air-source heat-pump operating conditions. We first introduced a new experimental method using a luminance meter, which measured the light intensity from the surface, and determined the phase-change time, for quantitatively defining the frost stages. The phenomena of frost retardation was analyzed for 10 samples with different water contact angles (75 degrees-160 degrees) at different refrigerant temperatures. When the refrigerant temperature was -10 degrees C or -12 degrees C, the effect of frost retardation increased remarkably with superhydrophobic surfaces. However, when the refrigerant temperature was -8 degrees C, the effect of superhydrophobicity diminished at water contact angles greater than 150 degrees.
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Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
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