Title: Application of Computational Fluid Dynamics to flow next to high-rise buildings in Hong Kong due to air-conditioner heat rejection

Authors: M. Bojic, S. Savic, D. Nikolic

Addresses: Faculty of Mechanical Engineering at Kragujevac, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia. ' Faculty of Mechanical Engineering at Kragujevac, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia. ' Faculty of Mechanical Engineering at Kragujevac, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia

Abstract: This paper presents the results of several studies done for high-rise residential buildings in Hong Kong that involved Computational Fluid Dynamics (CFD) simulation. During summer, a number of Window Air-Conditioners (WACs) could be rejecting condenser heat into a recessed space of these high-rise residential buildings. FLUENT 5.0, a CFD code can be used to predict temperatures and flow field of a powerful rising hot air stream formed in the recessed space. In these cases, for simulations, we use κ-ε turbulence model, and 2D and 3D model of the building. A CFD code can also be used to predict temperature and flow fields inside the recessed spaces that differ in heights and condenser-unit locations. The CFD code also employed to predict the airflow patterns. The papers study the worst-case scenario in summer when all the WAC units reject condenser heat into this space.

Keywords: computational fluid dynamics; CFD; heat rejection; high-rise residential buildings; recessed spaces; temperature rise; window air conditioners; WACs; Hong Kong; simulation; turbulence modelling.

DOI: 10.1504/IJETP.2008.017035

International Journal of Energy Technology and Policy, 2008 Vol.6 No.1/2, pp.159 - 177

Published online: 04 Feb 2008 *

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