The impact of the thermal mass on field energy performance of insulating concrete form (ICF) wall

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ConferenceInternational Workshop on Whole Building Testing, Evaluation and Modelling for Energy Assessment: 18 May 2011, Copenhagen, Denmark
Pages112; # of pages: 12
Subjectinsulation, field testing, ICF, thermal response, cold climate, modeling; Insulation
AbstractThis research evaluated the dynamic heat transmission characteristics through an ICF wall assembly in FEWF for a one year cycle of exposure to outdoor natural weathering conditions. The monitored data confirmed that the concrete adds very little to the overall R-value of the wall assembly under steady-state conditions. During the transient conditions, the data showed that the concrete played a significant role in tempering heat loss to the exterior. The thermal mass of the concrete was shown to reduce the peak heat flux through the assembly during cold weather. The present NRC-IRC?s hygrothermal model, called hygIRC-C, was used to interpret the readings of the instrumentations and to improve the experiment design by repositioning these instrumentations at critical locations. Subsequently, the present model was benchmarked against the measured data. Results showed that the predictions of the present model are in good agreement with experimental data. This research is one of a series of projects that highlight direct and indirect impacts of thermal performance of the building Envelope technologies in houses. This research is on-going. Recently, the present model was used to conduct numerical simulations in order to investigate the transient thermal response of full-scale ICF wall assemblies subjected to different Canadian climates.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number54485
NPARC number20374943
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Record identifierc3f74929-0a78-4c70-8047-0ceb23c59ef2
Record created2012-07-23
Record modified2016-05-09
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