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Materials for Energy Efficiency and Thermal Comfort in Buildings by M Hall

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12

Reflective materials and radiant barriers for insulation in buildings

D.W. Yarbrough,     R&D Services Inc. USA

Abstract:

Reflective insulations and radiant barriers are products used to reduce radiative transport across air spaces. The physical basis for these products, methods of testing, and the standards for reflective-type products are discussed in this chapter. Selected references to the existing literature are included.

Key words

reflective insulation

radiant barriers

heat flux

convection

radiation

reflective air space

emittance

12.1 Background and definitions

Thermal insulations used in buildings use the low thermal conductivity of gases to reduce heat flow. Mineral fiber, cellulosic, and open-cell plastic insulations use air ...

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