NDLI: Effects of different characteristic surfaces at initial stage of frost growth

Content Provider	Springer Nature Link
Author	Cai, Liang Hou, Pu xiu Wang, Rong han Zhang, Xiao song
Copyright Year	2010
Abstract	The effects of surface energy on phase change of water vapor at initial stage of frost growth were studied to find an effective method of restraining frost growth. The mechanism of restraining frost growth by low energy surface (bigger contact angle) was analyzed based on crystal growth theory. Then, the phase change of water vapor and the process of frost growth on the copper and wax energy surfaces were observed using microscope. The results indicate that it is difficult for wax surface (low energy surface), on which there are still water droplets at 100 s, to form critical embryo, so frost growth can be restrained in a way. Water formation, droplet growth, ice formation and dendritic ice growth processes happen on both surfaces, ordinally. But the ice beads, with larger average diameter and sparse distribution on the wax surface, form later (at about 300 s) than that on the copper surface, and the dendritic ice also appears later. All of these support that ice crystal formation and dendritic crystal growth at initial stage of frost growth can be retarded on the low energy surface.
Starting Page	413
Ending Page	418
Page Count	6
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	17
Issue Number	2
e-ISSN	19930666
Language	English
Publisher	Central South University
Publisher Date	2010-04-17
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	frost growth surface characteristic contact angle wax coat Metallic Materials Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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