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Thermal properties of building walls: Indirect estimation using the inverse method with a harmonic approach

机译：建筑墙体的热特性：使用谐波方法使用逆方法进行间接估算

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This study investigates energy efficiency in buildings. The accurate evaluation of energy consumption in existing buildings is a difficult task, particularly due to the Mediterranean climate, which is in the temperate zone. Among the various analytical models, the most effective measurement of the energy consumption of buildings is the dynamic type. In evaluating the energy consumption of buildings, the greatest contribution is provided by opaque components and particularly by the external walls of that building. In the model, which is reported in the EN ISO 13786, the thermal properties (the specific heat (J/kgK) and thermal conductivity (W/mK) of the layers of the wall were tested, and the technical standard reported that the physical properties (from which they derive the phase shift and decrement factor) transferred through the wall when a sinusoidal wave temperature variation was applied in a periodic steady state. We propose an inverse approach to measure the sinusoidal periodic steady state (temperature and thermal flux) on the two faces of the wall. With this approach, it is possible to obtain the thermal properties of the wall through an inverse analytical model. The model was applied in a real experiment on a full-size wall in a climatic chamber to verify the dynamic thermal and physical properties of the layers. Published by Elsevier B.V.
机译：本研究调查建筑物的能源效率。准确评估现有建筑物的能耗是一项艰巨的任务，特别是由于地中海气候属于温带地区。在各种分析模型中，最有效的建筑物能耗测量是动态类型。在评估建筑物的能耗时，不透明的组件，尤其是建筑物的外墙，是最大的贡献。在EN ISO 13786中报告的模型中，测试了墙壁各层的热性能（比热（J / kgK）和热导率（W / mK）），而技术标准报告说，当在周期性稳态下施加正弦波温度变化时，通过壁传递的特性（从中得出相移和减量因数）我们提出了一种反向方法来测量正弦波的稳态（温度和热通量）通过这种方法，可以通过反分析模型获得墙的热特性，该模型在气候室内的全尺寸墙的真实实验中得到了应用，以验证动态层的热和物理性能。Elsevier BV发布

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