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An Experimental Study on Condensation Frosting Characteristics on Vibrating Cold Surfaces
International Communications in Heat and Mass TransferMengjie Song, Zhichao Wang, Kailiang Li
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Condensation frosting detection and characterization using a capacitance sensing approach
International Journal of Heat and Mass Transfer, 2020Abstract Frost growth is detected using capacitance sensing approach. A capacitive sensor with interdigital electrodes (IDEs) is designed and fabricated based on the fringing effect. Frost growth experiments under different surface temperatures, air temperatures, and air velocities are conducted with simultaneous frost imaging.
Yuchen Shen, Sophie Wang
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Langmuir, 2020
Self-propelled jumping of condensate droplets (dew) enables their easy and efficient removal from surfaces and is essential for enhancing the condensation heat transfer coefficient and for delaying the frost growth rate on supercooled surfaces. Here, we report the droplet-jumping phenomenon using nanoporous vertically aligned carbon nanotube (VA-CNT ...
Behrouz Mohammadian +6 more
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Self-propelled jumping of condensate droplets (dew) enables their easy and efficient removal from surfaces and is essential for enhancing the condensation heat transfer coefficient and for delaying the frost growth rate on supercooled surfaces. Here, we report the droplet-jumping phenomenon using nanoporous vertically aligned carbon nanotube (VA-CNT ...
Behrouz Mohammadian +6 more
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Planetary applications of ion induced erosion of condensed-gas frosts
Nuclear Instruments and Methods in Physics Research, 1982Abstract Condensed gases are a ubiquitous substance on surfaces in the outer solar system. In this paper the effects of incident charged particles on the icy surfaces of the satellites of Jupiter and Saturn, comets, ring particles and ice grains are reviewed using recent data on ion erosion of condensed gases.
R.E. Johnson +2 more
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Condensation Frosting on Meter-Scale Superhydrophobic and Superhydrophilic Heat Exchangers
International Journal of Heat and Mass Transfer, 2019Abstract Frost formation on heat transfer equipment such as air-source heat pump evaporators can result in drastic efficiency penalties. The performance reduction is a result of the insulating nature of ice and the increased fan power required to pump air through the constricted channels between frosted fins.
Shreyas Chavan +2 more
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Frost condensation of sulfur dioxide and snow surface pollution
Russian Meteorology and Hydrology, 2011Discussed is the mechanism of snow cover pollution caused by the frost condensation of sulfur dioxide. Given are the results of observations of sulfur dioxide concentration variations in the upper snow layer. The temperature gradient value in the surface inversion layer is considered as a determining factor of frost condensation.
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Effect of Moisture Transfer Through a Semipermeable Membrane on Condensation/Frosting Limit
Journal of Heat Transfer, 2018This paper investigates frost formation on a flat horizontal surface, with humid air flowing over the surface and a cold liquid desiccant flowing below the surface. Two different surfaces, a semipermeable membrane and an impermeable plate, are tested.
S. Niroomand +2 more
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Heat Transfer Engineering, 2013
In this study, frost is grown on microgrooved and flat brass samples under specific operating conditions and a comparison of the condensation, frosting, and defrosting pattern on microgrooved and flat brass surfaces is carried out experimentally. The surfaces are fabricated by a mechanical micromachining process and no chemical alteration of the ...
Md. Ashiqur Rahman, Anthony M. Jacobi
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In this study, frost is grown on microgrooved and flat brass samples under specific operating conditions and a comparison of the condensation, frosting, and defrosting pattern on microgrooved and flat brass surfaces is carried out experimentally. The surfaces are fabricated by a mechanical micromachining process and no chemical alteration of the ...
Md. Ashiqur Rahman, Anthony M. Jacobi
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Condensation and frost behavior on the surface of organic sorbent
The Proceedings of Conference of Chugoku-Shikoku Branch, 2021Ryuichiro KISHINE +4 more
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Controlled formation of condensed frost layers in cryogenic high vacuum pumps
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2010Cryopumping involves the condensation and solidification of gas onto cryogenically cooled array surfaces. Control of the formation of the frost layers within the pump can improve its performance from both a vacuum and a capacity viewpoint. Vacuum performance of a cryopump involves the consistent attainment of required pressure levels within process ...
Sergei E. Syssoev +2 more
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