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CFD SIMULATION OF SPRAY DEHUMIDIFICATION PROCESS IN MOIST AIR

DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf.100
pages 161-168

Ali Farnoud
Interdisciplinary Center for Scientific Computing, Heidelberg University, Heidelberg, 69120, Germany

Semra Gumruk
TOBB University of Economics and Technology, Mechanical Engineering Department Sogutozu St. No: 43 06560 Ankara

Murat K. Aktas
Department of Mechanical Engineering and Mechanics, Drexel University 3141 Chestnut Street, Philadelphia, PA19104 USA; Department of Mechanical Engineering TOBB University of Economics and Technology, 06560 Ankara, Turkey

Аннотация

This study presents a two dimensional numerical investigation of interaction between hot humid air and sub-cooled water which is sprayed contrary to the airflow direction. The droplet evaporation and condensation are analyzed using ANSYS-FLUENT commercial software. Diameter of water droplets are chosen between 8 μm and 12 μm and mass flow rates are in the range of 2.5 g/s and 4 g/s. Analysis predict that droplet transport and evaporation depend on droplet diameter and mass flow rate of the water-spray. By decreasing the droplet size more evaporation and condensation is achieved, and as a result, more heat is released. It is also shown that increasing mass flow rate of the water spray leads to heat transfer enhancement and reduction of humidity.

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