Comparison of WALLDRY predictions with Atlantic Canada Moisture Test Hut Data / prepared by: G.K. Yuill and Associates Ltd.: NH17-157/1990E-PDF

"This is the final report to CMHC on the "Comparison of WALLDRY Predictions with Atlantic Canada Moisture Test Hut Data". The project was carried out in two phases. During Phase I of the project, a detailed analysis of the corrected Atlantic Canada Moisture Test Hut Data was carried out in order to establish a correlation between the time a panel takes to dry to 19% and the configuration of the various panels. The moisture data from the Atlantic Canada Test Huts was collected by Oboe Engineering Ltd. They had also analysed the data in its original form. However, the moisture data has since been altered by applying a correction algorithm to it. The moisture data in its present form was analysed during Phase I of this project. It was discovered that the conclusions that emerged from the analysis of the corrected data were slightly different than those from Oboe's analysis. Phase II of the project involved the comparison of the WALLDRY predictions with the corrected moisture data analysed in Phase I. WALLDRY was used to simulate the drying/wetting of the Atlantic Canada Test Hut walls by using hourly airport weather data. The simulation results were compared with the Test Hut measured data to assess the validity of the WALLDRY computer program. In more than half the simulated wall configurations, WALLDRY adequately predicted the drying/wetting phenomena. However, a number of weaknesses in the model were recognized. Several modifications to WALLDRY have been suggested, which might improve its performance"--Introd.

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