The effect of air film thermal resistance on the behaviour of dynamic insulation

B.J. Taylor, M.S. Imbabi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The authors' previous analysis of dynamic insulation is extended to include the inner and outer air film resistances with the objective of modelling the variation in surface temperature with air flow. The boundary condition that comes closest to predicting the variation of the surface temperature with airflow is one which assumes that the conduction heat flux at the wall surface, rather than the net heat flux, is equal to the flux incident on the wall from global environmental temperature. T Comparison of predictions of the temperature drop across the inner and outer air films with data from a hot box experiment shows that the theory correctly predicts the variation in surface temperature with air flow through a porous wall.
Original languageEnglish
Pages (from-to)397-404
Number of pages8
JournalBuilding and Environment
Volume32
Issue number5
DOIs
Publication statusPublished - 1 Sep 1997

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insulation
Heat resistance
airflow
Insulation
surface temperature
air
heat flux
Air
heat
Heat flux
Temperature
boundary condition
temperature
incident
prediction
modeling
effect
Boundary conditions
experiment
Fluxes

Cite this

The effect of air film thermal resistance on the behaviour of dynamic insulation. / Taylor, B.J.; Imbabi, M.S.

In: Building and Environment, Vol. 32, No. 5, 01.09.1997, p. 397-404.

Research output: Contribution to journalArticle

Taylor, B.J. ; Imbabi, M.S. / The effect of air film thermal resistance on the behaviour of dynamic insulation. In: Building and Environment. 1997 ; Vol. 32, No. 5. pp. 397-404.
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