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Heat and mass transfer characteristics in a spray chamber
Authors:Ralf Wiksten  Mamdouh El Haj Assad  
Affiliation:aHelsinki University of Technology, Laboratory of Applied Thermodynamics, P.O. Box 4400, FIN-02015 HUT, Finland
Abstract:This paper presents a one-dimensional mathematical model for heat and mass transfer of water droplets in a spray chamber. The model includes drop size distribution and velocity of the droplets generated by a nozzle of inlet diameter 3.2 mm. By using the conservation of mass and energy, the changes in water temperature, air temperature and humidity along the spray cone in the spray chamber can be calculated. This model is tested with two different water mass flows. The results look reasonable from practical point of view and they also show that higher water mass flow results in a higher air temperature drop and higher humidity.
Keywords:Air conditioning   Humidifier   Modelling   Heat transfer   Mass transfer   Drops   Parameter   Geometry   SpeedMots clé  s: Conditionnement d'air   Humidificateur   Modé  lisation   Transfert de chaleur   Transfert de masse   Gouttelettes   Paramè  tre    omé  trie   Vitesse
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