Frost Growth on Vertical Surfaces with Varying Wettability

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dc.contributor.author El Cheikh, Amne
dc.contributor.author Jacobi, Anthony M.
dc.contributor.editor Groll, Eckhard A.
dc.contributor.editor Eckhard, A.
dc.date.accessioned 2021-11-02T12:34:35Z
dc.date.available 2021-11-02T12:34:35Z
dc.date.copyright 2012 en_US
dc.date.issued 2021-11-02
dc.identifier.uri http://hdl.handle.net/10725/13066
dc.description.abstract Frosting occurs on heat exchangers in heat pumping and refrigeration applications when the surface temperature of the heat exchanger is below the freezing point of water. The accumulation of frost on the heat transfer surface increases pressure drop (fan power) and decreases heat transfer, because the frost layer has a low thermal conductivity much lower than that of the heat exchanger material, and it blocks the air flow. System efficiency is reduced by frost accumulation, and operation is complicated by the need to defrost the heat exchanger. Many factors including air temperature, humidity, and cold plate temperature are known to affect frost growth on heat transfer surfaces. In the present study, a model for frost growth on and densification on flat surfaces is presented. The mathematical model is developed by analytically solving the governing heat and mass diffusion equations with appropriate boundary conditions. For temperature, a convective boundary condition at the frost surface and a fixed cold plate temperature were used. However, for the water-vapor density, the condition at the frost surface is unknown. Unlike earlier saturation and supersaturation models, the current work is based on a specified heat flux obtained experimentally in order to find the density gradient at the surface. From the results, it can be shown that the water-vapor at the frost-air interface is supersaturated. en_US
dc.description.sponsorship Ray W. Herrick Laboratories en_US
dc.language.iso en en_US
dc.publisher Purdue University en_US
dc.subject Refrigeration and refrigerating machinery -- Congresses en_US
dc.subject Refrigerants -- Congresses en_US
dc.title Frost Growth on Vertical Surfaces with Varying Wettability en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 201705688 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.physdesc 4 volumes: ill en_US
dc.publication.place West Lafayette, Ind. en_US
dc.keywords Wettability en_US
dc.keywords Frost en_US
dc.description.bibliographiccitations Includes bibliographical references en_US
dc.identifier.ctation El Cheikh, A., & Jacobi, A. M. (2012). Frost growth on vertical surfaces with varying wettability. In Proceedings of the 2012 International Refrigeration and Air Conditioning Conference. Paper 1234. en_US
dc.author.email amne.elcheikh@lau.edu.lb en_US
dc.conference.date July 16-19, 2012 en_US
dc.conference.pages 7 pages en_US
dc.conference.place Purdue University, West Lafayette, Indiana USA en_US
dc.conference.title Proceedings of the 2012 International Refrigeration and Air Conditioning Conference at Purdue en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://docs.lib.purdue.edu/iracc/1234/ en_US
dc.orcid.id https://orcid.org/0000-0003-0459-8145 en_US
dc.publication.date 2012 en_US
dc.author.affiliation Lebanese American University en_US

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