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A numerical Study for Improvement of Indoor Air Quality of Apartment House  

Shin, Mi-Soo (Department of Environmental Engineering, Chungnam National University)
Kim, Hey-Suk (Department of Environmental Engineering, Chungnam National University)
Hong, Ji-Eun (Department of Environmental Engineering, Chungnam National University)
Jang, Dong-Soon (Department of Environmental Engineering, Chungnam National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.7, 2009 , pp. 521-530 More about this Journal
Abstract
This study has been made to execute a research in order to lead the improvement of indoor air quality, examining the indoor ventilation characteristics by using a numerical analysis method. To this end an extensive parametric investigation are made according to various external flow variables such as main wind direction and wind speed by season, building layout design, and location of ventilators, etc. in Daedeok Techno Valley, one of large-scaled apartment in Daejeon. It is observed there was a significant difference of main wind direction between summer and winter. The main wind direction in summer was a south wind, and on the contrary the direction in winter is northnorthwest, which is similar to the average main wind direction for 10 years. One of the important calculation results is that the change of wind direction causes a significant effect on the apartment ventilation by the change of pressure difference around each complex of apartment. In case of favorable area of ventilation, the indoor ventilation rate can meet 0.7 ACH from the standard value only with natural ventilation. On the contrary, in other area the value was much lower than the standard value. If the calculation result applies to the design of layout apartment or placement of ventilators, it will be greatly helpful to the energy saving because it can be parallel with the natural ventilation to help securing ventilation rate, not much depending on the mechanical ventilation.
Keywords
Indoor air quality; Natural ventilation; ACH; Numerical simulation;
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