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本文利用实测与模拟相结合的研究方法,分析Ashenfelter体育馆中混合式通风系统对室内风热环境的影响。研究发现:混合式通风有效避免了穿堂风通风路径上的风速衰减。虽然风机是体育馆室内风速的决定因素但风场的均衡度与自然进风口分布的均匀性同样息息相关;体育馆垂直高度上的温度分层现象明显,空间的热压优势显著;混合式通风在体育馆中的降温作用巨大,通风时间的设置对降温效果有重要影响。夜间通风使Ashenfelter体育馆室内过热时数减少56.6%,84.7%的运营时间内不需使用空调系统进行降温。
In this paper, we use the research method of the actual measurement and the simulation to analyze the influence of the mixed ventilation system in the Ashenfelter stadium on the indoor wind and thermal environment. It is found that the hybrid ventilation can effectively avoid the wind speed attenuation in the ventilation path of the auditorium. Although the fan is the determining factor of the indoor wind speed in the gymnasium, the balance of the wind field is also closely related to the uniformity of the natural air inlets. The temperature stratification at the vertical height of the gymnasium is obvious and the hot pressing advantage of the space is remarkable. The cooling effect is huge, ventilation time settings have a significant impact on the cooling effect. Ventilation at night reduced indoor overheating hours at Ashenfelter Indoor Stadium by 56.6% and nighttime ventilation eliminated the need for air conditioning to cool down during 84.7% of operating hours.