摘要
太阳能烟囱可强化自然通风效果,提高室内热舒适性。文章采用计算流体力学方法模拟了太阳能烟囱进风口尺寸对烟囱内部气流分布的影响。通过分析烟囱进风口尺寸对烟囱内部气流组织的影响发现合理的进风口尺寸可以减少烟囱内部回流现象,有助于提升自然通风效率,防止气流在烟囱内部出现短路;而进风口尺寸对温度场和压力场的分布影响较小。这为被动式建筑设计中太阳能烟囱进风口尺寸的优化设计提供了参考依据。
Solar chimney can strengthen the natural ventilation effect and improve indoor thermal comfort. In this paper, the effect of inlet size on chimney internal airflow distribution was investigated through computational fluid dynamics method. It is found that reasonable air inlet size can reduce the backflow phenomenon and improve natural ventilation efficiency. What＇s more, it can also prevent air flow from short circuit inside chimney. And the inlet size has little impact on the distribution of temperature and pressure field. This provides a reference for the optimal design of the inlet size of the solar chimney in passive building design.
作者
唐明远
TANG Mingyuan(School of Energy Science and Engineering, Central South University, Changsba 410083, China)
出处
《低温建筑技术》
2018年第3期165-168,共4页
Low Temperature Architecture Technology
关键词
太阳能烟囱
自然通风
数值模拟
solar chimney
natural ventilation
numerical simulation
