摘要
通过对组合式太阳能烟囱的研究,数值模拟其在风压和热压耦合作用下不同烟囱宽度、倾斜面长度、室外风速和太阳能辐射强度下的性能。研究结果表明:风压与热压对烟囱的通风量起相互增益的作用;在风压和热压耦合作用下,组合式太阳能烟囱出口的温度与速度随倾斜面长度的增加而增加;组合式太阳能烟囱的进口截面的速度随烟囱宽度的增加而增加;在烟囱宽度增加时,烟囱进口会产生局部涡流。
A numerical simulation to investigate the ventilation performance of a combined solar chimney. The influence factors of solar chimney such as width of the chimney, length of the inclined channel, outdoor wind velocity and intensity of solar radiation were analyzed under the coupling action of the wind and thermal pressure. The results indicated that the interaction of wind and thermal pressure enhance the ventilation of the chimney. The outlet temperature and velocity of the combined solar chimney increases with the increase of length of the inclined channel under the action of the couple of wind and thermal pressure. The inlet velocity of the combined chimney increase when increasing width of the combined chimney. As increasing the width of the combined chimney, local vortex were generated near the chimney inlet.
出处
《科技通报》
北大核心
2016年第3期157-161,共5页
Bulletin of Science and Technology
基金
国家自然科学基金资助项目(No.51106103)
关键词
热压
风压
数值模拟
太阳能烟囱
thermal pressure
wind pressure
numerical simulation
solar chimney
