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首页> 外文期刊>Journal of building physics >Integrated methodology for evaluation of energy performance of the building enclosures: Part 4 - material characterization for input to hygrothermal models
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Integrated methodology for evaluation of energy performance of the building enclosures: Part 4 - material characterization for input to hygrothermal models

机译：评估建筑围护结构能源性能的综合方法：第4部分-湿热模型输入的材料表征

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摘要

Reviewing hygrothermal input data published in handbooks such as ASHRAE or ASTM, one often finds large range of variability in hygric properties of construction materials. Two factors that cause variability of these results are uncertainty of the test method and inadequate characterization of the material sample. Adequate characterization of the tested sample, despite being one of the most critical aspects of any material property measurement, is however frequently neglected. Yet, performing a high-precision test when the sample is not adequately characterized does not tell us what material was tested and therefore is not precise. Typically porous materials are characterized with geometrical properties such as mean pore size and pore-size distribution, but this approach bring as many new ques tions as it addresses. In this context, a position paper from CIB W40 written almost 10 years ago proposed using critical hygrothermal characteristics for material charac terization as well as for the input to the models. Yet, with a few recently completed PhD, revisiting this issue may support the use of hygrothermal models for field perfor mance calculations.
机译：回顾诸如ASHRAE或ASTM之类的手册中发布的湿热输入数据，人们经常发现建筑材料的湿气特性存在较大范围的变化。导致这些结果差异的两个因素是测试方法的不确定性和材料样品的表征不足。尽管是任何材料性能测量中最关键的方面之一，但对测试样品的充分表征却经常被忽略。然而，当样品未充分表征时执行高精度测试不会告诉我们所测试的材料，因此也不精确。通常，多孔材料的特征是具有几何特性，例如平均孔径和孔径分布，但是这种方法带来了许多新问题。在这种情况下，近十年前来自CIB W40的一份立场文件提出使用临界湿热特性来进行材料表征以及模型输入。但是，随着最近几位博士的完成，重新审视此问题可能会支持使用湿热模型进行田间性能计算。

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