Pool boiling heat transfer coefficient of pure liquids using dimensional analysis

Document Type : Research Paper


Department of Chemical Engineering, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran


The pool boiling heat transfer coefficient of pure liquids were experimentally measured on a horizontal bar heater at atmospheric pressure. These measurements were conducted for more than three hundred data in thermal currents up to 350 kW.m-2. Original correlations and the unique effect of these correlations on experimental data were discussed briefly. According to the analysis, a new empirical relationship implying a performance superior to other available correlations is presented.


  • Dimensionless groups were created linking new boiling heat transfer coefficient to physical properties of boiling liquids.
  • Boiling heat transfer coefficient of liquids increased slowly through an increase in heat flux.
  • A precise correlation was achieved to link dimensionless groups by optimizing the model using genetic algorithm.


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