介绍了一种用于区域供暖和制冷的聚氨酯管道保温材料在地下水侵蚀下的性能研究。在类似于操作系统故障的情况下，测量有效导热系数和吸湿率。确定干燥速率，以及一旦去除湿气源，绝缘层可以干燥的程度。关键词:1997年，区域供暖，管道，隔热，聚氨酯，性能，水，地下，地下水，导热系数。1997年，第103卷，第一部分，论文编号4042（RP-721），309-317，10图，参考文献。

Describes an investigation of the performance of polyurethane pipe insulation used in district heating and cooling subjected to underground water attack. Measures the effective thermal conductivity and moisture absorption rate under conditions similar to those found in operating system that have failed. Determines the drying rate and to what extent the insulation can be dried out once the source of moisture is removed.KEYWORDS: year 1997, District heating, pipelines, thermal insulation, polyurethane, performance, water, underground, ground water, thermal conductivity