Advanced modelling of vapor resistance of moisture dependent vapor retarder
Research output: Contribution to journal › Conference article › Contributed › peer-review
Contributors
Abstract
Moisture dependent vapor retarders (smart vapor retarders) are widely used in building construction especially roofs in order to prevent moisture accumulation or to support drying out processes. The current modelling approaches mainly use only a relative humidity dependent vapor resistance. Recent studies have shown more complex behavior like direction depending flow or vapor pressure gradient depending flow. This paper shows a new procedure for including all these effects into physical model. Furthermore description of necessary measurements with evaluation of results and selection of a proper model with parameter adjustment will be shown based on three different example membranes. Finally the implementation of this model into a hygrothermal simulation code is described.
Details
Original language | English |
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Pages (from-to) | 201-206 |
Number of pages | 6 |
Journal | Energy Procedia |
Volume | 132 |
Publication status | Published - 2017 |
Peer-reviewed | Yes |
Conference
Title | 11th Nordic Symposium on Building Physics |
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Abbreviated title | NSB 2017 |
Conference number | 11 |
Duration | 11 - 14 June 2017 |
Website | |
Location | Norwegian University of Science and Technology |
City | Trondheim |
Country | Norway |
External IDs
ORCID | /0000-0003-0771-6370/work/142251598 |
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Keywords
ASJC Scopus subject areas
Keywords
- Building materials, hygrothermal simulation, moisture, vapor retarder