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:
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 More
  • Saied Abdallah Ahmed Ibrahym, "Thermal Performance of Finned Heat Sinks – State of The Art", The Egyptian International Journal of Engineering Sciences and Technology, 2015 More
  • Saied Abdallah Ahmed Ibrahym, "Thermal design evaluation of ribbed/grooved tubes: An entropy and exergy approach", ElSEVIER, 2020 More
  • Saied Abdallah Ahmed Ibrahym, "Elliptic tube free convection augmentation: An experimental and ANN numerical approach", Elsevier Ltd, 2019 More
  • Saied Abdallah Ahmed Ibrahym, "Thermal design evaluation of ribbed/grooved tubes: An entropy and exergy approach", Elsevier Ltd, 2020 More

Department Related Publications

  • Sayed Ahmed ELsayed Sayed, "Finite ellment analysis of the effect of hydrodynamic lubricants on friction contact properties of adjacent bodies", لايوجد, 1900 More
  • Sayed Ahmed ELsayed Sayed, "The interference effect of a wall on the flow around two circular cylinders arranged in tandem", لايوجد, 1900 More
  • Sayed Ahmed ELsayed Sayed, "Heat pump and energy recovery in air- conditioning system ", لايوجد, 1900 More
  • Nabil Hassan Mostafa Hassan , "Computed Transient Supercavitating Flow Over a Projectile", لايوجد, 1900 More
  • Nabil Hassan Mostafa Hassan , "Computing Turbulent Flow Field of Swirl Jet", لايوجد, 1900 More
Tweet