高大空间热分层实测与热压通风冷却潜力  

Field Measurements on Thermal Stratification and Predicting on Cooling Potential of Thermal Pressure Ventilation for Large Space

作　　者：林凯[1] 王子童 郑浩[3] 

机构地区：[1]南京工业大学城市建设学院,南京210009 [2]南京市金陵中学,南京210005 [3]江苏省绿色建筑工程技术研究中心有限公司,南京210009

出　　处：《建筑节能》2017年第2期1-6,16,共7页BUILDING ENERGY EFFICIENCY

基　　金：中国博士后科学基金(面上项目)(2015M581783);江苏省博士后科研资助计划(1501066B)

摘　　要：以南京某大空间建筑为对象,长45 m、宽15 m、高16 m,在9月过渡季连续多日测试了自然通风状况下的室内温度分布,发现同一垂直方向上温度的线性化程度较好,梯度在0.2℃/m左右,且随室外气象条件变化而变化。采用热压通风效应模型,计算了南京、武汉、重庆、广州4个不同夏热地区全年各月的热压通风量及满足基准通风量要求的最小上部开口面积与通风排热量。利用Energy Plus能耗软件模拟全年各月热压通风热舒适时数,发现广州地区具有最好的热压通风节能潜力。For a large and high laboratory building in Nanjing, indoor temperature distributions under natural ventilation were tested during several days on September, and its linear degree was found to be good in any a vertical direction, also its gradient was about 0. 2℃/m and varied with outdoor weather. By using the thermal effect model, the ventilation rates of each month were calculated out for cities of Nanjing, Wuhan, Chongqing and Guangzhou, also the minimum upper opening areas and heat exhaust rates were decided which satisfied with the benchmark ventilation rate. With energy simulation tool EnergyPlus, hours of thermal comfort of each month were modeled, and the founding was that Guangzhou has the best energy saving potential of thermal pressure ventilation.

关 键 词：高大空间 热分层 上部开口 热压通风 能耗模拟 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]