严寒地区绿色建筑墙体热工性能研究

发布时间：2018-06-25 17:17

本文选题：建筑墙体 + DeST-c　；参考：《吉林建筑大学》2017年硕士论文

【摘要】：如何降低能耗已成为建筑节能领域的重要研究课题。建筑外围护结构热工性能对建筑能耗影响比较大,而建筑墙体热工性能又是影响建筑能耗比重最大的,本文主要开展严寒地区建筑墙体的热工性能。对建筑墙体采取保温措施的方法有很多种,本文对比三种不同墙体保温系统,分析每种保温系统的性能特点,发现墙体外保温系统的应用比较广泛,特别是在严寒地区。通过开展长春地区几种典型墙体类型的实验研究,对比不同类型墙体传热系数的变化关系,运用DeST-c软件模拟出能够在《绿色建筑评价标准》GB/T50378-2014(以下简称“绿标”)中得分为5分的墙体类型建筑物冷、热负荷量以及总负荷量情况,结果显示采用“50mm厚EPS保温板+加气混凝土型墙体”和“60mm厚EPS保温板+煤矸石多孔砖型墙体”建筑物采暖期累计总负荷与《公共建筑节能设计标准》GB50189-2015中关于严寒地区满足外墙传热系数限制的墙体建筑物累计总负荷相比减小量低于5%,在“绿标”中不得分。因此,对绿色建筑墙体热工性能的研究既要考虑传热系数的减小量,又要与“节能65%”标准墙体建筑物负荷量做出比较。本文还从技术性、经济性、节能性角度出发,开展了墙体保温层厚度的优化研究。基于全寿命周期法,采暖度日数法计算推导整个建筑生命周期内的总成本,通过研究保温材料费用与建筑采暖费用的关系,提出了保温材料经济保温层厚度的概念。分析了现值系数PWF、采暖度日数HDD18,非保温层墙体热阻R等因素对经济保温层厚度影响,指出在确定不同地区经济保温层厚度的大小时,应该结合当地实际参数通过计算求得。本文计算了长春地区几种典型的墙体结构的经济保温层厚度,为该地区选取保温材料种类、厚度大小提供技术支撑。
[Abstract]:How to reduce energy consumption has become an important research topic in the field of building energy conservation. The thermal performance of the outer enclosure structure has a great influence on the building energy consumption, and the thermal performance of the building wall is the most important factor affecting the building energy consumption. In this paper, the thermal performance of the building wall in the cold area is mainly carried out. The method of insulation measures for the building wall is taken. There are many kinds. This paper compares three different wall insulation systems and analyzes the performance characteristics of each kind of insulation system. It is found that the application of the wall insulation system is more extensive, especially in the cold region. Through the experimental research on several typical wall types in Changchun, the relationship between different types of wall heat transfer coefficient is compared, and DeST-c is used. The software simulated the wall type building with 5 points in the green building evaluation standard >GB/T50378-2014 (hereinafter referred to as "green label") the cold, heat load and the total load. The results show that "50mm thick EPS insulation board + aerated concrete wall" and "60mm thick EPS insulation board + coal gangue porous brick wall" are built. The cumulative total load of the building during the heating period is less than 5%, compared with the total total load of the wall building which satisfies the external wall heat transfer coefficient limit in the cold area of >GB50189-2015, and does not score in the "green standard". Therefore, the study of the thermal energy of the green building wall should not only consider the reduction of the heat transfer coefficient, It is also compared with the "energy saving 65%" standard wall building load. In this paper, the thickness of wall insulation is optimized from the point of view of technical, economic and energy saving. Based on the whole life cycle method, the total cost of the whole building life cycle is deduced by the heating degree method, and the cost and construction of thermal insulation materials are studied. The concept of the thickness of the thermal insulation layer is put forward by building the relation of heating cost. The influence of the present value coefficient PWF, the heating day number HDD18, the non thermal insulation layer wall thermal resistance R and other factors on the thickness of the economic insulation layer is analyzed. It is pointed out that the local actual parameters should be calculated and calculated in combination with the local actual parameters in determining the thickness of the economic insulation layer in different areas. In this paper, the thickness of the typical insulation layer of several typical wall structures in Changchun is calculated, which provides technical support for selecting the type and thickness of insulation materials in this area.
【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU111.4

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