Laser Treatment Technique for Boiling Heat Transfer Application

Abstract. The article discusses the use of laser treatment to produce surfaces that enhance boiling heat transfer. The laser beam has been applied on copper substrates to generate longitudal fins of regular geometry. The altered morphology pattern enables to dissipate higher heat flux values than the smooth, untreated surface – in the case of distilled water and ethyl alcohol as boiling agents. The issue of modeling nucleate pool boiling heat flux on laser processed surfaces is discussed in the paper considering two selected models of boiling.