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Experimental study for enhancing condensation on large-scale surface using hybrid hydrophilic-hydrophobic patterns
Faculty
Engineering
Year:
2023
Type of Publication:
ZU Hosted
Pages:
Authors:
Saied Abdallah Ahmed Ibrahym
Staff Zu Site
Abstract In Staff Site
Journal:
Case Studies in Thermal Engineering Elsevier Ltd
Volume:
Volume 45, May 2023, 102984
Keywords :
Experimental study , enhancing condensation , large-scale surface using
Abstract:
Improving condensation on large-scale surfaces promotes a wide range of manufacturing fields. To take advantage of both dropwise and filmwise condensation properties, both hydrophobic and hydrophilic surfaces can be developed on one hybrid surface. In this paper, experimental studies were performed on vapor condensation over a flat vertical plate. Three different surfaces were utilized: hydrophilic (aluminum), hydrophobic (coated), and hybrid surfaces with distinctive hydrophilic and hydrophobic patterns. The effect of the volume flow rate of the cooling water was investigated from 5 L/min to 15 L/min. For the hybrid surfaces, three types of patterns were studied: separated holes of hydrophilic patterns (the island) with two different diameters, arrow pattern, and tree pattern. According to the results, the heat transfer rate varied as the surface conditions changed. For the aluminum surface that resulted in filmwise condensation mode, the observed heat transfer rate was less than that of the coated surface, which showed a combination of filmwise and dropwise condensation modes. For the hybrid surfaces, the observed heat transfer rate was higher than that of the coated surface. From all the surfaces in this study, the highest heat transfer rate was for the 2.0 mm diameter island pattern.
Author Related Publications
Saied Abdallah Ahmed Ibrahym, "Thermo-Fluid Performance of a Vapor- Chamber Finned Heat Sink", The Egyptian International Journal of Engineering Sciences and Technology, 2016
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Saied Abdallah Ahmed Ibrahym, "Thermal Performance of Finned Heat Sinks – State of The Art", The Egyptian International Journal of Engineering Sciences and Technology, 2015
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Saied Abdallah Ahmed Ibrahym, "Thermal design evaluation of ribbed/grooved tubes: An entropy and exergy approach", ElSEVIER, 2020
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Saied Abdallah Ahmed Ibrahym, "Elliptic tube free convection augmentation: An experimental and ANN numerical approach", Elsevier Ltd, 2019
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Saied Abdallah Ahmed Ibrahym, "Thermal design evaluation of ribbed/grooved tubes: An entropy and exergy approach", Elsevier Ltd, 2020
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Department Related Publications
Sayed Ahmed ELsayed Sayed, "Results of experimental study of heat transfer intensification process for boiling of refrigerant mixture on tubes surfaces", لايوجد, 1900
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Sayed Ahmed ELsayed Sayed, "Static and dynamic performance of pilot hydraulic relief valves", لايوجد, 1900
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Sayed Ahmed ELsayed Sayed, "Flow through capillary tubes of different geometries and its effect on heat pump performance", لايوجد, 1900
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Sayed Ahmed ELsayed Sayed, "Experimental investigation of the performance of a cross- Flow heat exchange with bundle of semi- circular tubes", لايوجد, 1900
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Nabil Hassan Mostafa Hassan , "3D Numerical and Experimental Analysis of Turbulence Energy Spectrum in Swirl Jet", لايوجد, 1900
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