Analytical investigation of the steady-state behaviour of dynamic and diffusive building envelopes

B.J. Taylor, D.A. Cawthorne, M.S. Imbabi

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

A one-dimensional model describing the steady-state dynamic and diffusive behaviour of a three-layer building envelope element is developed with the objective of elucidating the physics of simultaneous heat and vapour transport through dynamically insulated building envelopes. The equations are simple to program on a spreadsheet, enabling architects to build tools which will allow them to design "breathing" envelope constructions. The variables at the designer's disposal are air and vapour permeability, thermal conductivity and thickness of the layers comprising the envelope. Users wishing to consider more complicated constructions will find that they can readily extend, by inspection, the equations from the three layers presented here to any number of layers. Whilst mass transfer has been discussed in terms of water vapour transport, the equations are very general and can be applied to the transport of any gas through a permeable wall.
Original languageEnglish
Pages (from-to)519-525
Number of pages7
JournalBuilding and Environment
Volume31
Issue number6
DOIs
Publication statusPublished - Nov 1996

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building
Vapors
permeability
Spreadsheets
architect
Water vapor
heat
physics
Thermal conductivity
Mass transfer
Physics
Inspection
air
water
spreadsheet
Air
thermal conductivity
Gases
mass transfer
water vapor

Cite this

Analytical investigation of the steady-state behaviour of dynamic and diffusive building envelopes. / Taylor, B.J.; Cawthorne, D.A.; Imbabi, M.S.

In: Building and Environment, Vol. 31, No. 6, 11.1996, p. 519-525.

Research output: Contribution to journalArticle

Taylor, B.J. ; Cawthorne, D.A. ; Imbabi, M.S. / Analytical investigation of the steady-state behaviour of dynamic and diffusive building envelopes. In: Building and Environment. 1996 ; Vol. 31, No. 6. pp. 519-525.
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