358-寒冷地区附加阳光间热湿特性研究.pdfVIP

寒冷地区附加阳光间热湿特性研究1 大连理工大学 赵金玲 杨艳霞 韩雪 摘 要：为了揭示附加阳光间的动态热湿特性，为附加阳光间的优化设计提供理论基 础，对大连地区某附加阳光间冬季传热过程进行了实测研究，分析了集热墙体热响应特性、 附加阳光间内空气温度分布及流态、空气结露对建筑热损失的影响。结果表明：集热墙体外 表面的温度梯度与太阳辐射照度成正相关，最大垂直温差可达到1.4℃，墙体的蓄放热性能 降低室外空气温度波动对室内的影响，有利于维持室内热环境稳定；封闭状态下附加阳光间 内空气温度竖向分布不能忽视地面材料吸热性能的影响，空气流态主要处于层流到过渡流， 南侧玻璃周围空气处于过渡流的时间频率较大；空气结露使附加阳光间热损失增大了37%左 右，应增强附加阳光间保温避免结露现象的产生。 关键词 附加阳光间；传热过程；热环境；结露 Abstract ：In order to reveal the dynamic heat and humidity characteristics of the attached sunspace, the theoretical basis of its optimization design is provided, and the experimental study on the heat transfer process of an attached sunspace in Dalian is carried out. The thermal response characteristics of the heat collecting wall, temperature distribution and air flow in the attached sunspace, and air condensation on the building energy consumption were analyzed. The results show that the temperature gradient of the heat collecting wall surface is positively correlated with the solar radiation, and the maximum vertical temperature difference can reach 1.4°C. The Thermal storage performance can reduce the impact of outdoor air temperature fluctuations on the interior, which is conducive to maintaining indoor thermal stability; In the closed state, the vertical distribution of the air temperature cannot ignore the effect of the heat absorption performance of the ground material, the air flow is mainly from laminar to transitional flow, and the air around the south side glass is in the transitional flow with a relatively high frequency of time; Air condensation increases the heat loss between the attached sunspace by about 37%, attached sunspace insulation should be enhanced to avoid condensation. Keywords: the attached sunspace; heat transfer process; thermal environment; condensation. 0 引言 附加阳光间作为被动式建筑节能构件，在城乡建筑中广泛使用，显示出良好的效果。附 加阳光间对建筑热环境及能耗的影响得到学者的关注[1-3] 。G.C.Bakos[4] 利用三种不同的计算 方法对比分析了附加阳光间的节能率。芦潮等[5]采用静态负荷方法分析呼和浩特地区的附加 1 基金项目：国家自然科学