Computational Modeling of Direct Steam Generation in Pipes Receiving Concentrated Solar Radiation

  • V. M. Maytorena DGAPA-UNAM
  • J. F. Hinojosa Universidad de Sonora (UNISON), Blvd. Rosales y Luis Encinas, Hermosillo, CP 83000, Sonora, México.


The purpose of this work was to simulate the conditions of direct steam generation in a vertical tube receiving concentrated solar
radiation. The modified RPI model was used for the conditions of critical heat flux coupled to a Eulerian two fluid model. The
mathematical model was solved with CFD software ANSYS FLUENT v15. The results were validated with experimental data
reported in the literature and a parametric study was carried out to determinate the effect of the mass flux, the heat flux incident
on the wall and the heat transfer area on: the steam quality, the volumetric fraction and the temperatures of liquid and steam.
From the results obtained, it was determined the required conditions to obtain a steam quality of 100%.


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