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Effects of Engineered Micro/Nanostructures on Nucleate Pool Boiling Heat Transfer

[ Vol. 7 , Issue. 2 ]

Author(s):

Bengt Sundén, Sahar A. Abbood and Zan Wu   Pages 155 - 161 ( 7 )

Abstract:


Objective: Phase-change heat transfer enhancement is of critical importance to meet high cooling demands.

Method: Recently, surface engineering (surface structuring) has emerged as a promising heat transfer enhancement method, especially with the development of nanotechnology. Surface parameters such as wettability, surface roughness and porosity are modified by surface engineering.

Aims: This work aims to discuss the parametric effects of wettability, surface roughness and porosity on pool boiling heat transfer performance by selecting several promising micro/nanoscale enhancement techniques as examples.

Conclusion: More efforts are needed as phase-change phenomena on micro/ nanostructures are complicated due to the multiscales of the engineered micro/ nanostructures and the length-scales of the bubble dynamics.

Keywords:

Heat transfer, micro/nanostructure, pool boiling, porosity, roughness, wettability.

Affiliation:

Department of Energy Sciences, Lund University, P.O. Box 118, Lund SE-22100, Department of Energy Sciences, Lund University, P.O. Box 118, Lund SE-22100, Department of Energy Sciences, Lund University, P.O. Box 118, Lund SE-22100

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