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An approach to validating computational models for hygrothermal analysis - full scale experiments

Maref, W., Lacasse, M. A. and Booth, D. G.
2003
Proceeding of the 3rd International Conference on Computational Heat and Mass Transfer (Banff, Alberta, 5/26/2003), pp. 243-251,, (NRCC-45215)


Maref, W., Lacasse, M. A. and Booth, D. G., (2003), "An approach to validating computational models for hygrothermal analysis - full scale experiments", Proceeding of the 3rd International Conference on Computational Heat and Mass Transfer (Banff, Alberta, 5/26/2003), pp. 243-251,, (NRCC-45215).
Abstract:
Recent research in the field of assessment of hygrothermal response has focused on either laboratory experimentation or modelling, but less work has been reported in which both aspects are combined. Such type of studies can potentially offer useful information regarding the benchmarking of models and related methods to assess hygrothermal performance of wall assemblies. An advanced hygrothermal computer

model called hygIRC was used to assess the hygrothermal response of wood sheathing board, a key component of wood-frame wall assemblies. hygIRC uses hygrothermal properties of materials derived from tests on small-scale specimens undertaken in the laboratory. The intent of this work was to obtain experimental results on the hygrothermal the response of the wood sheathing, in full-scale wall assemblies, when subjected to nominally steady-state environmental conditions. The drying rates of wall assemblies featuring several different membranes in contact with the wood sheathing were determined from experiments undertaken in a controlled laboratory setting. These results were subsequently compared to those obtained using hygIRC as a means of helping benchmark the simulation model. Conclusions from these studies are definite for both full-scale tests - simulation results compare favourably with those obtained from the experiments. This suggests that the model adequately emulates the hygrothermal response of specific wood-frame assembly components, such as wood sheathing, over a range of environmental conditions to which it was subjected in the experiments. These results further enhance confidence towards the implementation of hygIRC in broader based parametric studies.


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Author Information and Other Publications Notes
Maref, W.
National Research Council of Canada, Institute for Research in Construction
  1. A methodology to develop moisture management strategies for wood-frame walls in North America: application to stucco-clad walls
  2. A precision weighing system for helping assess the hygrotherma response of full-scale wall assemblies
  3. Assembly and Calibration of a Compact Temperature and Relative Humidity Sensor
  4. Benchmarking of the advanced hygrothermal model hygIRC with mid scale experiments
  5. Executive Summary of Research Contributions Related to Moisture Management of Exterior Wall Systems (MEWS) - Modeling, Experiments, and Benchmarking
  6. In-Situ performance evaluation of exterior insulation basement systems (EIBS) - spray polyurethane foam: summary report
  7. Summary of Research Contributions Related to Moisture Management of Exterior Wall System (MEWS)-- Modeling, Experiments and Benchmarking
  8. Three-dimensional analysis of thermal resistance of exterior basement insulation systems (EIBS)  
Lacasse, M. A.
Institute for Research in Construction, National Research Council, Ottawa,
  1. A discrete stochastic model for performance prediction of roofing systems
  2. A methodology to develop moisture management strategies for wood-frame walls in North America: application to stucco-clad walls
  3. Benchmarking of the advanced hygrothermal model hygIRC with mid scale experiments
  4. Defining climate regions as a basis for specifying requirements for precipitation protection for walls
  5. Durability of Building Materials and Components 8
  6. Executive Summary of Research Contributions Related to Moisture Management of Exterior Wall Systems (MEWS) - Modeling, Experiments, and Benchmarking
  7. Final Report from Task 8 of MEWS Project (T8-03) - Hygrothermal Response of Exterior Wall Systems to Climate Loading: Methodology and Interpretation of Results for Stucco, EIFS, Masonry and Siding Clad Wood-Frame Walls
  8. MEWS methodology for developing moisture management strategies: application to stucco-clad wood-frame walls in North America
  9. Proposed method for calculating water penetration test parameters of wall assemblies as applied to Istanbul, Turkey
  10. Report from Task 2 of MEWS Project - Description of 17 Large Sale Wall Specimens Built for Water Entry Investigation in IRC Dynamic Wall Testing Facility
  11. Report from task 6 of MEWS project -- experimental assessment of water penetration and entry into wood-frame wall specimens, - final report
  12. Report from Task 8 of MEWS Project - MEWS Methodology for Developing Moisture Management Strategies - Application to Stucco Clad Wood-Frame Walls in North America  
Booth, D. G.
  1. Assembly and Calibration of a Compact Temperature and Relative Humidity Sensor
  2. Executive Summary of Research Contributions Related to Moisture Management of Exterior Wall Systems (MEWS) - Modeling, Experiments, and Benchmarking  



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