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Pulse interfacial defrosting

delete2019-08-12
delete17
PRE
AI
S
Shreyas Chavan
T
Thomas Foulkes
Y
Yashraj Gurumukhi
K
Kalyan Boyina
K
Kazi Fazle Rabbi
N
Nenad Miljkovic *
DOI:10.1063/1.5113845delete
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摘要

摘要

En 中文
Frost formation and ice accretion are major problems for a plethora of industries. Common defrosting and deicing techniques utilize energy-intensive mechanical actuation to dislodge ice/frost or heating methods to melt ice/frost from surfaces. Here, we develop an ultraefficient method to defrost/deice surfaces by spatially and temporally localizing thermal energy at the substrate-ice/frost interface. To remove ice/frost efficiently, it is beneficial only to melt the interfacial layer adhering the ice/frost to the solid surface by using a localized pulse of heat, allowing gravity or gas shear in conjunction with the ultrathin lubricating melt water layer to remove the ice/frost. To probe the physics of pulse defrosting, we first developed a transient numerical heat transfer model. Experimental validation of the model was achieved via pulse ( approximate to 100ms) joule heating of indium tin oxide on glass samples. Utilizing transient heat fluxes ranging from 10 to 100W/cm(2), spontaneous melting of the interfacial ice/frost layer was achieved, leading to rapid ice removal. We employed our validated model to outline design guidelines for pulse defrosting applications, showing <1% of the energy and <0.01% of the defrosting time needed when compared to conventional thermal-based defrosting methods.
Keyword:
SOURCE HEAT-PUMP
HOT-GAS BYPASS
PERFORMANCE
FROST
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期刊

Applied Physics Letters 封面图
Applied Physics Letters
IF:
3.6
论文数:
10.4W
被引数:
17.8W

机构

U
University of Illinois Urbana-Champaign
学者数:
2.4W
论文数: 2.0W
被引数: 35
University of Illinois System 封面图
University of Illinois System
学者数:
6.9W
论文数: 6.2W
被引数: 644
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