The principal objective of this work is to study the steam condensation process influenced by varying surface morphology created on a copper substrate by the deposition of microparticles using thermal spray coating technique. A copper substrate is coated with microparticles of tungsten carbide and aluminium oxide. The surface characteristics of both the untreated and coated samples were analyzed using a stylus profilometer, SEM, and EDX. Film condensation experiments were then conducted on both the untreated copper plate and the coated samples. The results demonstrate that surfaces with varying morphologies show a significant difference in condensation heat transfer performance. Specifically, the copper substrate coated with aluminium oxide microparticles exhibited a 120% improvement in condensation performance compared to the untreated surface.

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Condensation Heat Transfer from Surfaces Modified by Coating of Microscale Particles Using Thermal Spray Coating

  • Ruben Jose Tom,
  • M. R Raj Kumar,
  • G Venugopal,
  • Ciby Thomas,
  • Seethalakshmi Govind

摘要

The principal objective of this work is to study the steam condensation process influenced by varying surface morphology created on a copper substrate by the deposition of microparticles using thermal spray coating technique. A copper substrate is coated with microparticles of tungsten carbide and aluminium oxide. The surface characteristics of both the untreated and coated samples were analyzed using a stylus profilometer, SEM, and EDX. Film condensation experiments were then conducted on both the untreated copper plate and the coated samples. The results demonstrate that surfaces with varying morphologies show a significant difference in condensation heat transfer performance. Specifically, the copper substrate coated with aluminium oxide microparticles exhibited a 120% improvement in condensation performance compared to the untreated surface.