EXPERIMENTS ON INFLUENCE OF MOISTURE ON THERMAL PERFORMANCE CHANGE OF INSULATIONS:Long term thermal performance of building insulation materials Part 2
EXPERIMENTS ON INFLUENCE OF MOISTURE ON THERMAL PERFORMANCE CHANGE OF INSULATIONS:Long term thermal performance of building insulation materials Part 2
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水分对保温材料热性能变化影响的实验：建筑保温材料的长期热性能第2部分
DOI：
10.3130/aije.75.261
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发表时间：
2010
影响因子：
2.2
通讯作者：
Taichi Tasaka
中科院分区：
文献类型：
--
作者：
Y. Kondo;A. Iwamae;Y. Nagasawa;T. Fujimoto;Y. Kikuchi;Taichi Tasaka
为了节省建筑物空调在整个生命周期的能耗，建筑物所使用的保温材料的热性能应保持在要求的值。另一方面，引起绝缘材料老化的因素有很多，如环境温度、振动、潮湿等。在之前的论文中，讨论了热性能变化的主要因素，并展示了一些实验结果。本文通过三种实验研究了水分对各种绝热材料热性能的影响。在第一个实验中，获得了纤维绝热材料的平衡含水量和导热系数之间的关系。第二个实验是关于气态水分对纤维绝缘材料的影响，结果表明，即使在非常潮湿的条件下，纤维绝缘材料的尺寸变化也很小。第三个实验是内部结露过程和干燥过程后导热系数的可逆性，结果表明，除了几种塑料保温泡沫外，许多保温材料都具有可逆性。
In order to save energy consumption for air-conditioning of buildings throughout those lifecycle, thermal performance of insulation materials applied in buildings should be kept in required value. On the other hand, there are many factors of ageing of insulation materials such as ambient temperature, vibration and moisture etc. In the previous paper, main factors of thermal performance change were discussed and several experimental results were shown. This paper examines the influences of moisture on thermal performance of various insulations based on three kinds of experiment. In first experiment, the relationship between equilibrium moisture content and thermal conductivity of fiber insulations is obtained. Second experiment is on the influence of gaseous moisture on fiber insulations and the results show that the dimension change of fiber insulations is small even in very humid condition. Third experiment is on the reversibility of thermal conductivity after the internal dew condensation process and the dry process, and the results show that many insulation materials have reversibility except for several plastic insulation foams.