红外热像法研究空心砖墙表面温度

发布时间：2018-02-26 23:12

  本文关键词： 红外热像法 空心砖墙 表面温度 热环境 保温　出处：《光谱学与光谱分析》2015年05期 　论文类型：期刊论文

【摘要】：建筑墙体的室内表面温度直接反映墙体的保温隔热性能,并且作为室内平均辐射温度的主要组成部分对室内热环境有重要影响。针对建筑工程中大量使用的空心砖墙体具有表面温度不均匀的特点,采用ThermaCAM P20型红外热像仪和ThermaCAM Reporter分析软件,研究应用红外热像法测量空心砖墙体的表面温度,分析空心砖墙体的温度特征以及空心砖、砌筑砂浆、配砖等组成材料对表面温度分布的影响。在高层住宅建筑工程现场,选择三层住宅的填充外墙位置,使用不同的烧结页岩空心砖、砌筑砂浆和配砖砌筑成三种空心砖墙体进行传热实验。通过采集三种烧结页岩空心砖墙体在冬季室内采暖条件下的内表面温度红外热像图,对比分析了两种空心砖和两种砂浆砌筑的墙体表面温度特性数据以及温度均匀性和温度频率分布。结果表明:提高空心砖和砌筑砂浆的保温性,能够有效提高墙体内表面温度,改善室内热环境;由保温砂浆代替水泥砂浆砌筑的节能型烧结页岩空心砖墙体,表面温度的不均匀性从0.6℃下降为0.4℃,并使表面温度频率分布发生变化,从非对称分布变为正态分布;随着表面温度均匀性的提高,平均温度所占的频率增大。本研究为空心砖墙体热功能的提高和优化提供了依据。
[Abstract]:The indoor surface temperature of the building wall directly reflects the thermal insulation performance of the wall, As the main component of indoor average radiation temperature, it has an important influence on indoor thermal environment. The hollow brick wall, which is widely used in building engineering, is characterized by uneven surface temperature. Using ThermaCAM P20 infrared thermal imager and ThermaCAM Reporter analysis software, the surface temperature of hollow brick wall is measured by infrared thermal image method, and the temperature characteristics of hollow brick wall and hollow brick, masonry mortar are analyzed. The influence of brick and other composition materials on surface temperature distribution. In the site of high-rise residential building, choose the position of filled exterior wall of three-story residence, use different sintered shale hollow brick, Three kinds of hollow brick walls are built by masonry mortar and brick to carry out heat transfer experiments. Infrared thermal images of the inner surface temperature of three sintered shale hollow brick walls under indoor heating conditions in winter are collected. The surface temperature characteristic data, temperature uniformity and temperature frequency distribution of two hollow bricks and two kinds of mortar masonry wall surface are compared and analyzed. The results show that increasing the temperature retention of hollow brick and masonry mortar can effectively improve the inner surface temperature of the wall. In order to improve the indoor thermal environment, the energy saving sintered shale hollow brick wall built with heat preservation mortar instead of cement mortar, the non-uniformity of surface temperature is reduced from 0.6 鈩，

本文编号：1540088