发明授权
US4119751A Cover means for protecting tubes conveying hot mediums 失效
用于保护输送热介质的管道的盖子

Cover means for protecting tubes conveying hot mediums
摘要:
A long-distance heating conduit comprising one or more tubes conveying the heating medium, which tubes are supported in the conduit by support means consisting of an insulating material resistant to compression and surrounded by a heat-insulating material also resistant to compression and enclosed by cover foils having holes, the size and shape of which are dimensioned in such a manner that water substantially cannot penetrate, but that they are permeable to gases and vapors.
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