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机构地区:[1]南京工业大学
出 处:《暖通空调》2016年第4期85-90,共6页Heating Ventilating & Air Conditioning
基 金:"十二五"国家科技支撑计划课题:大型商业建筑绿色化改造技术研究与工程示范(编号:2012BAJ06B04)
摘 要:在冬季,大型商场内的热压作用促使位于其底层的热空气上升,形成较大的竖直温度梯度,造成上热下冷、热舒适度差等问题。结合南京某商场温度实测分析与CFD数值模拟,提出了大型商场竖直温度梯度的改善方法。案例实测结果表明,采取风量调节控制后竖直温差由3.8℃减小至1.3℃。数值模拟结果表明,减少顶层送风量、增加底层送风量,并在1层设置挡温构件后,竖直温差由3.1℃减小至0.6℃,有效提高了室内温度均匀性和舒适度。In winter, thermal pressure in large shopping malls promotes the heat air rising from the bottom of the layer, forming a large vertical temperature gradient, which causes the hot in top and cold in bottorn and thermal discomfort. Combining temperature measurement in a shopping mall in Nanjing with CFD numerical simulation, presents a new method to reduce the vertical temperature gradient in large shopping malls. The measured results show that the vertical temperature difference is reduced from 3.8℃ to 1.3℃ by adopting the air adjusting control. Numerical simulation results show that the vertical temperature difference is reduced from 3.1℃ to 0.6℃ by reducing the top air supply, increasing the bottom air supply, and installing the baffles on the first layer, which effectively improves the uniformity and comfort of the indoor temperature.
关 键 词:大型商场 温度梯度 改善方法 风量调节 挡温构件
分 类 号:TU83[建筑科学—供热、供燃气、通风及空调工程]
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