首页    期刊浏览 2024年12月05日 星期四
登录注册

文章基本信息

  • 标题:Single solar chimney technology as a natural free ventilator; energy-environmental case study for Hong Kong
  • 本地全文:下载
  • 作者:Yan Cao ; Fayez Aldawi ; Nazaruddin Sinaga
  • 期刊名称:Case Studies in Thermal Engineering
  • 印刷版ISSN:2214-157X
  • 电子版ISSN:2214-157X
  • 出版年度:2021
  • 卷号:26
  • 页码:101173
  • DOI:10.1016/j.csite.2021.101173
  • 出版社:Elsevier B.V.
  • 摘要:The importance of ventilation is highlighted through the recent COVID pandemic particularly in populated societies with crowded buildings. The application of single solar chimney ventilator with and without fin, at different tilt angles, is evaluated for Hong Kong climate using transient 3D validated numerical simulation in present research from energy and environmental viewpoints. The results show that the ventilation performance of the solar chimney ventilator is significantly enhanced by selecting an optimum value for the tilt angle of the chimney. Moreover, the maximum air mass flow rate increases from 0.06 to 0.14 kg/s by reducing the tilt angle from 80° to 20°. Energy saving performance of the solar chimney ventilator with tilt angle of 20° is around 144% higher than that of the solar chimney ventilator with the tilt angle of 80°. During the morning time (sunrise to noon), the highest performance is achieved under the tilt angle of 40°. From the environmental viewpoint, the solar chimney ventilator with the tilt angle of 20° and 40° can prevent 0.098 kg and 0.108 kg CO 2 production through the morning. Prevention of the CO 2 production through the afternoon is 0.209 kg and 0.151 kg for the mentioned tilt angles respectively.
  • 关键词:Solar chimney ventilator ; Air ventilation ; Tilt angle ; Numerical simulation ; Environmental analysis
国家哲学社会科学文献中心版权所有