Use of hygrothermal numerical modeling to identify optimal retrofit options for high-rise buildings

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Conference12th International Heat Transfer Conference: 18 August 2002, Grenoble, France
Pages165170; # of pages: 6
Subjectbuilding envelope, coupled heat-mass transfer, high-rise building, indoor environment, moisture, porous media, retrofit, weather; Hygrothermal properties; Building envelope
AbstractUsing numerical modelling to simulate and predict the hygrothermal (i.e., combined thermal and moisture)performance of building envelopes is very recent. Key questions include: how to model accurately coupled heat-air and capillary moisture transports in building envelope components; a satisfactory definition of a set of representative environmental boundary conditions to be used for long-term hygrothermal calculations; how to characterize the moisture- and temperature-dependent properties; the effect of aging and cyclic environmental conditions on porous building materials; and how to develop sound criteria to predict the moisture durability of building envelope components. This paper presents the findings of a research project involving detailed hygrothermal modelling. The heat, air and moisture results demonstrated that the in-house model could be adapted successfully for high-rise building calculations. The findings also show how the long-term hygrothermal performance of typical wall systems can be assessed using numerical modelling. A short description of an advanced in-house heat, air and moisture model, hygIRC, is also presented.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46032
NPARC number20386399
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Record identifier37c4df4b-af3e-493e-99a8-589698d9c8cd
Record created2012-07-25
Record modified2016-05-09
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