Vacuum insulation properties of phenolic foam

被引：43

作者：

Kim, Jongmin ^{[1
]}

Lee, Jae-Hyug ^{[1
]}

Song, Tae-Ho ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Mech Aerosp & Syst Engn, Taejon 305701, South Korea

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2012年 / 55卷 / 19-20期

基金：

新加坡国家研究基金会;

关键词：

Phenolic foam; Vacuum insulation panel; Guarded hot plate; Thermal conductivity; THERMAL-CONDUCTIVITY; HEAT-TRANSFER; TEMPERATURES; COEFFICIENT; FUTURE; PANELS; SIZE; FLOW;

D O I：

10.1016/j.ijheatmasstransfer.2012.05.051

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Characteristic properties of phenolic foam as the interstitial material of a vacuum insulation panel are investigated experimentally. For the measurement of effective thermal conductivity, a vacuum guarded hot plate (VGHP) apparatus is used and the conductivity is measured at various vacuum levels. Radiative properties are found using a Fourier transform infrared spectroscopy (FT-IR) device. Solid conductivity is estimated using the porosity of the foam. Effective thermal conductivity at high level of vacuum is measured to be 5 mW/m K which is sum of solid conductivity (2.56 mW/m K) and radiative conductivity (2.44 mW/m K) with 5% of measurement uncertainty. The pore size of the foam is estimated to be 260 mu m using rarefied gas conduction theory. This ensures insulation performance of phenolic foam up to about 10(-3) atm. Other practical characteristics of phenolic foam as the VIP core material are also discussed. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：5343 / 5349

页数：7

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