居住建筑外遮阳及空调负荷分析

发布时间：2018-01-06 00:24

本文关键词：居住建筑外遮阳及空调负荷分析　出处：《华中科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：我国大多数居住建筑属于高能耗建筑，浪费严重。夏热冬冷地区由于其气候特点导致该地区的空调能耗很高，因此分析该地区的空调负荷，以及在此基础上提出合理改进措施显得尤为重要。本文首先选取武汉地区典型高层居住建筑，根据相关标准对围护结构参数的限值确定参考建筑，，计算得到其空调及采暖负荷变化规律以及年用电量作为围护结构及外遮阳改进的参考依据。太阳辐射是外围护结构，尤其外窗得热的重要影响因素，本文对武汉地区建筑各个朝向太阳辐射量做了详细研究，在此基础上，对常见水平式遮阳及垂直式遮阳效果进行分析，根据不同遮阳形式的横向对比研究，提出最佳遮阳方式及具体尺寸。论文采用EnergyPlus负荷计算软件，采取控制单一热源对室内负荷的影响计算的方法，对参考建筑的空调负荷的各个构成部分：外墙、各朝向外窗、内墙、人员、灯光设备、新风进行了全年以及典型设计日的冷热负荷进行详细计算分析。同时，对外墙、屋顶进行不同程度的保温措施，以及不同形式的外窗的节能效果及经济性进行分析。研究结果表明武汉地区全年太阳累计辐射量东向最大、南向西向次之、北向最小。水平式遮阳效果优于垂直式，且水平式南向遮阳效果最好；东向、西向其次；北向效果最差。南向水平遮阳板出挑长度800mm最佳。外墙和屋顶推荐传热系数分别为0.372W/（m~2·K）和0.358W/（m~2·K），外窗选用高性能Low-E镀膜玻璃。
[Abstract]:Most residential buildings in China belong to high energy consumption buildings, which are very wasteful. Because of its climatic characteristics, air conditioning energy consumption in this area is very high, so the air conditioning load in this area is analyzed. And on this basis, it is particularly important to put forward reasonable improvement measures. This paper first selects the typical high-rise residential buildings in Wuhan area, and determines the reference building according to the limit value of the parameters of the enclosure structure according to the relevant standards. The change law of air conditioning and heating load and the annual electricity consumption are calculated as the reference basis for the envelope structure and the improvement of the external shading. Solar radiation is an important factor of the outer envelope structure, especially the heat of the outer window. This paper makes a detailed study on the solar radiation of buildings in Wuhan area towards the sun, and on this basis. The effects of horizontal shading and vertical shading were analyzed and compared according to different shading patterns. The optimal shading method and its specific size are put forward. The method of controlling the influence of single heat source on indoor load is adopted in this paper by using EnergyPlus load calculation software. The components of air conditioning load of reference buildings are calculated and analyzed in detail, such as external wall, facing window, inner wall, personnel, lighting equipment, fresh air and typical design day. At the same time. The energy saving effect and economy of exterior wall and roof are analyzed. The results show that the annual total solar radiation in Wuhan is the largest in the east direction, the second in the south direction, and the smallest in the north direction. The horizontal sunshade effect is better than the vertical one, and the horizontal south shading effect is the best. East, west, second; The north direction is the worst. The south horizontal shading board has the best length of 800 mm. The recommended heat transfer coefficient of exterior wall and roof are 0.372W / / m ~ (2 路K) and 0.358W / / m ~ (2 路K) respectively. High performance Low-E coated glass is used for exterior window.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU111.4;TU831

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