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.

引用

页码：307 / 310