New method of reducing contact heat transfer in vacuum-screen insulation

被引：0
|
作者：
Kurskaya, T.A. [1 ]
Getmanets, V.F. [1 ]
Grigorenko, B.V. [1 ]
机构：
[1] Acad of Sciences of the Ukrainian, SSR, Russia
来源：
Journal of Engineering Physics (English Translation of Inzhenerno-Fizicheskii Zhurnal) | 1988年 / 54卷 / 03期
关键词：
Plastics Films - Thermal Conductivity - Polyethylene Terephthalate - Film - Refrigerating Piping Systems - Thermal Insulation - Thermal Insulation - Vacuum Applications;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new method of heat treatment is proposed for vacuum-screen insulation (VSI) for cryogenic pipelines that substantially reduces the contact heat transfer and halves the heat flux. The method consists of brief heating (0.5-1 h) in air for the VSI packet mounted on the item at the plasticity temperature (130-140°C for polyethylene terephthalate PET film) of the VSI. The method was tested on one-component VSI consisting of corrugated one-sided aluminized PET films as well as VSI with inserts of SBSh-T glass cloth, NT-8 basalt cloth, and cloth composed of SNT-10 synthetic fiber. The method worked best for PET film inserts. The optimum temperature, time, and packing density were established based on the VSI thermal conductivity and thickness.
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页码：307 / 310
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