A Study of the Ventilation Performance for the Lighting-Ventilation Stack

• Main Authors: Chih-Hsien Li, 李芝嫺
• Other Authors: 周鼎金
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/d4a2xs

碩士 === 國立臺北科技大學 === 建築與都市設計研究所 === 96 === Remarkable advance have been made in city which transforms the high density of residential areas. That forms the building types to high-raised or dense cluster styles. Hence, the mechanical systems are largely used in order to maintain or create safe and comfortable conditions. The disadvantage due to the large lean of mechanical system brings carrying capacity of environment. Some studies present that natural ventilation is one of useful strategies provided that the air change rate is satisfactory. According to some successful projects in Taiwan, the vertical ventilation duct is confirmed as an important strategy. Besides, Taiwan has another advantage for the long period sunbeam. That can be used to raise natural ventilation if the buoyancy effect can be increased by the high solar radiation. Hence, the study addresses the possible for the application of lighting-ventilation stack. The study first uses the full-scale experiment for ventilation study. According to the experimental result was set up in CFD. To probe into parameter study (include: the open of vent 、height of stack、diameter of pipe、outdoor velocity and indoor heat-flux) in CFD, the ventilation performance for the lighting-ventilation stacks of diverse style can be known. This study points out that wind for ventilation performance is good more than buoyancy. Therefore, employing to increase the height of stack is better than the diameter of pipe.