An Advanced hygrothermal design tool "I-D hygIRC"

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ConferenceeSim 2004 Conference: 09 June 2004, Vancouver, B.C.
Pages190195; # of pages: 6
Subjectmodeling, hygrothermal modeling, building system, air transport, heat transfer, mass transfer moisture; Hygrothermal properties
Abstract1-D hygIRC is a user-friendly one-dimensional version of IRC's hygIRC, a state-of-the-art hygrothermal computer model. 1-D hygIRC has being made available for public release. The basic component modules comprising 1-D hygIRC are: the recently benchmarked hygIRC solver, a climate database containing 30 to 40 years of hourly weather data for 19 Canadian and 6 US cities, a material database containing the hygrothermal properties of 80 common construction as measured at IRC, a building envelope design tool integrated with the material properties database, and models to derive interior temperature and relative humidity conditions. 1-D hygIRC also provides the user with easy to use tools for output analysis. Optional provisions have also been made for the user to specify their own weather, interior conditions, or material property data, if they wish to investigate other parameters than those provided. The model simulates the hygrothermal response of each element to changing environmental conditions on either side of the envelope on an hourly basis. This produces information on the temperature and relative humidity distributions within the wall assembly and the changes over time. Time series plots of temperature, moisture contents, and other output parameters can be viewed for the wall layers or the entire wall where applicable. 1-D hygIRC also contains the freeze-thaw cycles and a moisture index developed for use with hygIRC. Users can animate the results to give a picture of the wall response over time. This program is targeted to engineers, architects, building scientists, contractors and other professionals. The framework of 1-D hygIRC was built to facilitate case studies allowing the user to readily conduct parametric studies, studies where several parameters are changed one at a time to gauge the sensitivity of the wall response. 1-D hygIRC can be downloading from IRC web site (
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number46902
NPARC number20377590
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Record identifier66c1a0c6-012e-4630-9753-02776505d664
Record created2012-07-24
Record modified2016-05-09
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