Numerical Evaluation of Ventilation Efficiency of Window Type Ventilation SystemsNumerical Evaluation of Ventilation Efficiency of Window Type Ventilation Systems
- Authors
- Yang, Young Kwon; Kim, Min Young; Moon, Jin Woo; Park, Jin Chul
- Issue Date
- Sep-2019
- Publisher
- World Scientific Publishing Co. Pte Ltd
- Keywords
- computational fluid dynamics; louver; ventilation; Window ventilation system
- Citation
- International Journal of Air-Conditioning and Refrigeration, v.27, no.3, pp 1 - 13
- Pages
- 13
- Journal Title
- International Journal of Air-Conditioning and Refrigeration
- Volume
- 27
- Number
- 3
- Start Page
- 1
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/36896
- DOI
- 10.1142/S2010132519500275
- ISSN
- 2010-1325
2010-1333
- Abstract
- Ventilation in buildings is the simplest and most convenient way to purify indoor air. However, when the ventilation is not enough due to natural ventilation, it should be cleaned by mechanical ventilation or air purifier. This process requires building energy. Therefore, it is possible to save the energy of the building by merely increasing the natural ventilation efficiency. This study conducted airflow analysis simulations to investigate the effects of changes in the shape of ventilation openings and louvers on the ventilation efficiency of a window ventilation system. The streamlined window opening exhibited a greater increase in airflow (41.3%) than did the conventional window (24.3%) for the ventilation model with four openings. It was also observed that flow separation and wakes were generated by the adverse pressure gradient arising from the increased airflow speed when a louver was employed. Based on these results, it can be concluded that using a louver as a wind augmentation device is an obstacle to improving the airflow in a window ventilation system. © 2019 World Scientific Publishing Company.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > ETC > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.