为了研究水分运动对热效率的影响，在含有可渗透隔热材料的低坡度屋顶系统上进行了试验。在气候模拟器中对包含各种蒸汽缓凝剂的屋顶系统的五个复制试验板进行了评估。描述测试程序。给出了实验结果。使用数值模型来帮助解释这些发现。总结结论。关键词:湿度、隔热、热流、性能、测试、计算、蒸汽屏障、实验、倾斜、屋顶、气候室、效率。 引用:研讨会，ASHRAE Trans。，1993年，第99卷，第2部分，论文编号DE-93-1-1429-439，图7，表2，参考文献。

To investigate the effects of moisture movement on thermal efficiency, an experiment was performed on a low-slope roof system containing permeable insulation. Five replicate test panels of the roof system containing a variety of vapour retarders were evaluated in a climate simulator. Describes the test procedures. Presents the experimental results. Uses a numerical model to help explain the findings. Summarises the conclusions.KEYWORDS: moisture, thermal insulation, heat flow, performance, testing, calculating, vapour barriers, experiment, inclined, roofs, climate chambers, efficiency.