西安建筑科技大学学报(自然科学版)

吐鲁番地区夏季极端干燥炎热,为了解沙漠干旱气候下居住建筑室内热环境状况及围护结构隔热性能,对室内空气温度、相对湿度及各朝向内表面温度进行测试,并采用理论计算与数值模拟方法,对多种围护结构热工条件下太阳辐射朝向差异对建筑隔热性能影响进行分析.结果表明:吐鲁番地区居住建筑室内热环境较差,满足热舒适与湿度要求时间比分别为15.8%、22.1%.在吐鲁番地区可通过控制室内蓄热改善室内热环境,当外围护结构热阻小于0.85 m2·K/W时,朝向差异对围护结构内表面温度影响显著,提高南向、东向围护结构热阻值可以有效改善室内热环境.为该地区建筑节能及热工设计优化提供参考.

Turpan is extremely dry and hot in summer. In order to obtain the indoor thermal environment condition of residential buildings and the heat insulation performance of envelope structure under the dry climate condition, indoor air temperature, relative humidity and internal surface temperature of all orientations were tested. Theoretical calculation and numerical simulation were used to analyze the influence of solar radiation orientations on building insulation performance under various thermal conditions of envelope structures.Results show that the indoor thermal environment is poor, and the time ratio to meet the thermal comfort and humidity requirements is 15.8% and 22.1% respectively.In Turpan area, indoor thermal environment can be improved by controlling indoor heat storage. When the thermal resistance of the outer protective structure is less than 0.85 m2·k/w, the orientation difference has a significant impact on the inner surface temperature of the protective structure, and increasing the thermal resistance value of the south and east protective structure can improve the indoor thermal environment more economically and effectively.It provides reference for the improvement of indoor thermal environment and the optimization of thermal design in Turpan.

引言
1 围护结构内表面温度
2 室内热环境测试
3 模拟与分析
4 结论

图1 吐鲁番夏季日均干球温度、日均相对湿度<br/>Fig.1 Dry bulb temperature and relative humidity in Turpan in summer

图1 吐鲁番夏季日均干球温度、日均相对湿度
Fig.1 Dry bulb temperature and relative humidity in Turpan in summer

表1 墙体构造及热物理性能<br/>Tab.1 Thermal physical properties of walls

表1 墙体构造及热物理性能
Tab.1 Thermal physical properties of walls

图2 室外综合温度<br/>Fig.2 Sol-Air temperature for each orientation

图2 室外综合温度
Fig.2 Sol-Air temperature for each orientation

图3 不同外墙热阻工况的内表面逐时温度<br/>Fig.3 The influence of thermal resistance value of external wall on internal surface temperature

图3 不同外墙热阻工况的内表面逐时温度
Fig.3 The influence of thermal resistance value of external wall on internal surface temperature

表2 测试仪器性能参数<br/>Tab.4 The performance parameters of testing instruments

表2 测试仪器性能参数
Tab.4 The performance parameters of testing instruments

图4 测点布置图<br/>Fig.4 Layout of measuring points

图4 测点布置图
Fig.4 Layout of measuring points

图5 7月27-7月28日室内热环境<br/>Fig.5 July 27-July 28 indoor thermal environment

图5 7月27-7月28日室内热环境
Fig.5 July 27-July 28 indoor thermal environment

表3 建筑围护结构构造及物理性能参数<br/>Tab.3 Building envelope structure and physical performance parameters

表3 建筑围护结构构造及物理性能参数
Tab.3 Building envelope structure and physical performance parameters

图6 不同内蓄热工况的外墙内表面温度<br/>Fig.6 The effect of internal regenerator on internal surface temperature

图6 不同内蓄热工况的外墙内表面温度
Fig.6 The effect of internal regenerator on internal surface temperature

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备注

引言

1 围护结构内表面温度

2 室内热环境测试

3 模拟与分析

4 结论

期刊信息