高大空间建筑上部开口驱动自然通风应用潜力
Potential of natural ventilation using upper openings in a large space building
摘要：
建立了高大空间建筑烟囱效应模型，计算了一典型高大空间建筑在南京、武汉及重庆不同气候条件下，利用烟囱效应和上部开口驱动的自然通风的通风量和全热传热量，确定了3个城市自然通风满足基准通风量要求的最小上部开口面积。以南京为例，实测了9月高大空间温度分层情况，利用EnergyPlus模拟了各月室内平均温度及考虑温度分层的建筑冷负荷。结果显示：南京5，6，9月较其他各月室内热舒适时数多，均在300 h左右；南京6，9月自然通风传热量为负值，需采用合适的自然通风策略，控制室内舒适度并降低能耗。
Abstract：
Establishes a stack effect model for large space buildings, calculates the air rate and total heat transfer of the natural ventilation driven by stack effect and upper openings in a typical large space building under different climates of Nanjing, Wuhan and Chongqing, and determines the minimum upper opening areas to meet the requirements of the standard ventilation. Taking Nanjing as an example, measures the temperature stratification in a large space building in September. Simulates the indoor mean temperature of each month and the building cooling loads considering the temperature stratification by EnergyPlus software. The results show that the indoor thermal comfortable hours in May, June and September are more than those in other months, with about 300 hours in each month. In June and September, the heat transfer of natural ventilation is negative in Nanjing, so it is necessary to adopt a suitable natural ventilation strategy to control indoor comfort and save energy.
Keywords:largespace,stackeffect,upperopening,naturalventilation,thermalcomfortablehour,openingarearatio,totalheattransfer