附加阳光间型被动房传热量受室外空气温度和太阳辐射双波动扰动影响,导致其热负荷具有显著波动特征,传统稳态计算方法难以适用,而动态方法过于复杂,不适用于工程设计使用。基于此,该文采用周期反应系数法研究结构参数和被动房传热量之间的定量关系,并结合结构参数,提出附加阳光间型被动房热负荷简化计算新方法。结果表明阳光间总传热量受公用墙体构造变化影响较大,内门传热量与公用墙体热阻呈正相关,墙体传热量与墙体热阻呈负相关;同类围护结构下,不同参数组合下公用墙导热量与阳光间空气温度变化规律趋势一致,进而提出附加阳光间导热变化系数和温度变化系数,以该参数为基础建立了关键结构参数与传热量之间的多元回归模型,该简化计算方法与实测值对比结果表明吻合度较大,简化计算方法精度较高,可供实际工程设计使用。
Abstract
The heat transfer of the passive house with attached sunspace is affected by both ambient air temperature and solar radiation, resulting in obvious fluctuations in thermal load. The traditional steady-state calculation method is difficult to be applied, and the dynamic method is too complex for engineering design. Therefore this paper uses the periodic response coefficient method to study the quantitative correlation between the structural parameters and the heat transfer of the passive house, and combining the structural parameters, a new simplified calculation method for the heat load of the passive house with attached sunspace was proposed. The results show that the total heat transfer of sunspace is greatly affected by the structural parameters of the party wall, and the heat transfer of the inner door is positively related to the thermal resistance of the party wall, and the heat transfer of the wall is negatively related to the thermal resistance of the wall; Under the same enclosure structure, the change trend of the heat conduction of the party wall and the air temperature between the sunspace and the party wall are consistent for different parameter combinations. Thus, the thermal conductivity variation coefficient and temperature variation coefficient of the attached sunspace are proposed. Based on these parameters, the multivariate regression model between the key structural parameters and the heat transfer is established. The comparison between the simplified calculation method and the measured value showed that the simplified calculation method is more consistent and simplified, the calculation method has high accuracy and can be used in practical engineering design.
关键词
被动太阳房 /
热负荷 /
回归分析 /
附加阳光间 /
简化计算方法
Key words
passive solar building /
thermal load /
regression analysis /
attached sunspace /
simplify calculations method
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基金
“十三五”国家重点研发计划课题（2016YFC0700400）; 陕西省重点研发项目（2018ZDCXL-SF-03-01）
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