夏热冬冷地区双层玻璃幕墙热通道内气流组织模拟分析

发布时间：2018-01-08 10:37

本文关键词：夏热冬冷地区双层玻璃幕墙热通道内气流组织模拟分析　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：通风式双层皮玻璃幕墙(Ventilated double skin facade,简称VDSF)外形通透美观,相较于传统的单层皮幕墙,其运行方式更为灵活多变,因而近年来,在我国各地,得到了不少应用。但是针对我国夏热冬冷地区这类较复杂的气候环境下双层皮玻璃幕墙的传热通风特性的研究十分有限。尽管目前我国幕墙厂家的生产安装技术都是从欧洲整套引进的,夏季室内过热、空调系统能耗增加仍然是一个普遍的现象,和双层皮玻璃幕墙在欧洲诸多建筑中达到的提高室内舒适度和减少空调系统规模等效果有较大差距。本文以课题组搭建的两间房间为实验平台,采集VDSF全年实测运行数据,通过试验以及数值模拟软件--Fluent对VDSF热通道内通风性能进行研究,探究VDSF在我国夏热冬冷地区的适用性及较节能的结构设计形式,对我国夏热冬冷地区VDSF的设计及应用提供一些建议。首先,详细介绍了该实验平台,收集夏季实验数据且对之进行处理,分析自然通风和机械通风模式下,VDSF热通道间距、有无百叶以及百叶位置对VDSF热通道通风效果的影响,并且将这两种通风模式进行对比分析,寻求可以实现自然通风的结构设计,以优化VDSF的结构设计。然后,利用Fluent软件对实验分析初步确定的四种工况分别在正午时分太阳辐射以及逐时太阳辐射情形下进行模拟分析,其间,将ASHRAE手册推荐使用的太阳辐射计算模型及本课题组建立的太阳辐射模型,分别和实验实测值进行对比,确定选用本课题组建立的模型作为太阳辐射模型。Fluent模拟结果显示,像长沙市这种典型的夏热冬冷地区,热通道间距设计为0.30m较为合适。
[Abstract]:Ventilated double skin glass curtain wall (Ventilated double skin facade, referred to as VDSF) appearance transparent appearance, compared with the traditional single skin facade, its mode of operation is more flexible, so in recent years, in our country, get a lot of application. But the study on heat transfer characteristics of this kind of ventilation complex climate environment in China hot summer and cold winter area under the double skin glass curtain wall is very limited. Although the installation of production technology in China are introduced from the curtain wall manufacturers in Europe set, summer indoor overheating, increase the energy consumption of air conditioning system is still a common phenomenon, and the double skin glass curtain wall in Europe many buildings to improve indoor comfort the degree of air conditioning system and reduce the scale effect there is a great gap between the two rooms. The research group for setting up the experiment platform, collecting VDSF annual measured operation data, through experiment and numerical simulation The software --Fluent ventilation performance of VDSF thermal channel research, explore the applicability of VDSF in hot summer and cold winter area in China and more energy-saving design of the structure, and provide some suggestions for the design and application of VDSF in hot summer and cold winter area in China. Firstly, introduces the experimental platform, and the experimental data were collected in summer on the analysis of natural ventilation and mechanical ventilation mode, VDSF thermal channel spacing, without affecting the position of the louver louver and VDSF thermal channel ventilation effect, and the two ventilation modes were analyzed for structural design can realize the natural ventilation, the structure design and optimization of VDSF. Then, the experimental analysis of four cases confirmed was simulated, at noon hourly solar radiation and solar radiation conditions in using Fluent software, the ASHRAE manual recommended the use of solar radiation Shoot and calculation model established by the research group of solar radiation model, respectively, and the experimental results were compared to determine the selection of the research group established model as the solar radiation model of.Fluent simulation results show that, like the hot summer and cold winter area typical of this Changsha City, hot channel spacing design is suitable for 0.30m.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU228;TU834

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