Field evaluation of reflective insulation in south east Asia

Khar San Teh, David W. Yarbrough, Chin Haw Lim, Elias @ Ilias Salleh

Research output: Contribution to journalArticle

Abstract

The objective of this research was to obtain thermal performance data for reflective insulations in a South East Asia environment. Thermal resistance data (RSI, m2 K/W) for reflective insulations are well established from 1-D steady-state tests, but thermal data for reflective insulation in structures like those found in South East Asia are scarce. Data for reflective insulations in South East Asia will add to the worldwide database for this type of energy-conserving material. RSI were obtained from heat flux and temperature data of three identical structures in the same location. One unit did not have insulation above the ceiling, while the second and third units were insulated with reflective insulation with emittance less than 0.05. RSI for the uninsulated test unit varied from 0.37 to 0.40 m2 K/W. RSI for a single-sheet reflective insulation (woven foil) varied from 2.15 to 2.26 m2 K/W, while bubble-foil insulation varied from 2.69 to 3.09 m2 K/W. The range of RSI values resulted from differences in the spacing between the reflective insulation and the roof. In addition, the reflective insulation below the roof lowered attic temperatures by as much as 9.7° C. Reductions in ceiling heat flux of 80 to 90% relative to the uninsulated structure, due to the reflective insulation, were observed.

Original languageEnglish
Pages (from-to)352-362
Number of pages11
JournalOpen Engineering
Volume7
Issue number1
DOIs
Publication statusPublished - 1 Feb 2017

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Insulation
Ceilings
Roofs
Metal foil
Heat flux
Heat resistance
Temperature

Keywords

  • emittance
  • reflective air space
  • reflective insulation
  • reflective technology
  • test hut
  • Thermal resistance

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Field evaluation of reflective insulation in south east Asia. / Teh, Khar San; Yarbrough, David W.; Lim, Chin Haw; Salleh, Elias @ Ilias.

In: Open Engineering, Vol. 7, No. 1, 01.02.2017, p. 352-362.

Research output: Contribution to journalArticle

Teh, Khar San ; Yarbrough, David W. ; Lim, Chin Haw ; Salleh, Elias @ Ilias. / Field evaluation of reflective insulation in south east Asia. In: Open Engineering. 2017 ; Vol. 7, No. 1. pp. 352-362.
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