ABSTRACT Indoor air environment includes indoor thermal environment and air quality, and a reasonable ventilation provides guarantee for a good indoor environment. A numerical study of the indoor environment in different ventilation is presented in this paper. The External Energy Saving Lab of the WenYuan Building was selected for this purpose, and its indoor air quality and thermal performance in the typical summer climate were simulated. For the numerical simulation, the techniques of Fluent Air-pak was adopted to establish the physical and numerical model of lab. A attention is given to the velocity field and the distribution of pollutant concentration, followed by a discussion of two ventilation modes (displacement ventilation and up-in and up-out ventilation). By comparison, it is found that the Displacement ventilation in improving indoor air quality is obviously superior to the traditional up-in and up-out ventilation.
Cite this paper
Li, Y. (2012) Numerical simulation and analysis for indoor air quality in different ventilation. Health, 4, 1352-1361. doi: 10.4236/health.2012.412197.
 Li, Y. (2010) The application of CFD technology in analysis of residential wind environment. Journal of Urban Technology, 12, 67-81.
 Feng, Q. (2010) Research of the air-conditioning system with CPCP& DOAS via CFD. Residential Technology, 30, 12.
 Lin, Z., Chow, T.T., Fong, K.F, et al. (1999) Validation of CFD model for research into application of displacement ventilation to Hong Kong buildings. In: Zhao, R.Y. and Burnet, J., Eds., ISHVAC, 99: 3rd International Symposium on Heating Ventilation and Air Conditioning, 1-2, 602-613.
 Fletcher, C.A.G., Mayer, I.F., Eghlimi, A. and Wee, K.H.A. (2001) CFD as a building services engineering tool. Architectural Science, 2, 67-81.
 Peter, R. and Gao, S.N. (1998) Numerical study of heat transfer from an impinging jet. Heat and Mass Transfer, 40, 671-680.
 Jiao, J.J., Gong, G.C. and Shao, C.S. (2008) The numerical simulation of the indoor air environment quality from air flow organization. Heating, Ventilation, and Air Conditioning, 19, 270-275.
 Long, W.D. (1999) Try to talk about the energy efficiency of buildings in the new ideas. Heating, Ventilation, and Air Conditioning, 29, 32-35.
 Tang, G.F., Lv, W.H. and Wang, H.Q. (1989) The numerical calculation and model experiment of indoor air-flow. Hunan University Press, Changsha.
 Xu, L., Weng, P.F. and Sun, W.M. (2003) The indoor airflow organization and indoor air quality’s numerical analysis of three ventilation modes. Journal of Air Dynamics, 21, 311-319.
 Yang, Y.R. (2002) Indoor air ventilation efficiency of the three-dimensional numerical analysis. Architecture and Urban Planning of Chongqing University, 3-5.
 Tao, W.Q. (1988) Numerical heat transfer. Jiaotong University Press, Xi’an, 18-19.
 Yuan, L.L. and Liu, B. (2010) The research of indoor air quality under different ventilation modes. Heating, Ventilation, and Air Conditioning, 40, 1-3.
 Ni, B. (2000) Experimental study of displacement ventilation. Heating, Ventilation, and Air Conditioning, 30, 2-4.