Title: Numerical study of Indoor Air Quality and thermal comfort under stratum ventilation

Authors: Lin Tian, Zhang Lin, Jing Liu, Qiuwang Wang

Addresses: State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi’an, 710049, PR China. ' Building Energy and Environmental Technology Research Unit, Division of Building Science and Technology, City University of Hong Kong, Hong Kong, China. ' State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China. ' State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China

Abstract: The air flow, heat transfer and contaminant dispersion in an office room under stratum ventilation, which is realised by placing jets strategically around a room at breathing height to create a layer of relatively fresh air, are investigated by a Computational Fluid Dynamics (CFD) model. The mass, momentum, energy, turbulence, species and air age conservation equations are solved, and the computed airflow, heat transfer and contaminant parameters are used for numerical prediction of Indoor Air Quality (IAQ) quantities based on ISO7730 such as Predicted Mean Vote (PMV) and the Predicted Percentage of Dissatisfied (PPD) room occupants. Special attention is also paid to the air quality of the breathing zone which is directly related to the occupants| health.

Keywords: numerical study; stratum ventilation; indoor air quality; breathing zone; thermal comfort; air flow; heat transfer; contaminant dispersion; air pollution; computational fluid dynamics; CFD.

DOI: 10.1504/PCFD.2008.021333

Progress in Computational Fluid Dynamics, An International Journal, 2008 Vol.8 No.7/8, pp.541 - 548

Published online: 19 Nov 2008 *

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