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2014-04-24 - Article/Dans un journal avec peer-review - Anglais - 15 page(s)

De Paepe Ward , Contino francesco, Delattin Frank, Bram Svend, De Ruyck Jacques, "New concept of spray saturation tower for micro Humid Air Turbine applications" in Applied Energy, 130, October 2014, 723-737

  • Edition : Elsevier, London (United Kingdom)
  • Codes CREF : Thermodynamique appliquée (DI2210)
  • Unités de recherche UMONS : Thermique et Combustion (F704)
  • Instituts UMONS : Institut de Recherche en Energétique (Energie)
Texte intégral :

Abstract(s) :

(Anglais) The micro Humid Air Turbine (mHAT) has proven to have the highest potential of all mixed air/water micro Gas Turbines (mGTs). Turning a mGT into a mHAT however requires the installation of a saturation tower. Most common saturation towers use packing material to increase the contact area between compressed air and water. The packing material however causes a pressure drop, which has a severe negative effect on the mGT performance. To limit this pressure drop, we have developed a spray tower without packing that uses nozzles to inject water in the compressed air. In this paper, we propose a design for the spray tower based on 2-phase flow simulations. The two major constraints during the design were minimal pressure loss and tower size. A sensitivity analysis was performed in order to indicate the key parameters to obtain fully saturated air from the tower. Results of simulations showed that using a spray tower reduces the pressure losses when compared to a classic saturation tower. Sensitivity analysis showed that droplet diameter and injected water mass flow rate have the largest effect on the final size of the spray tower. Finally, a cross-current spray tower design was proposed for a Turbec T100 mGT because the sensitivity analysis showed that cross-current droplets injection meets the design constraints best.

Identifiants :
  • DOI : 10.1016/j.apenergy.2014.03.055