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CIB Conferences

Abstract

The moisture behavior of wood-frame wall assemblies is typically assessed using hygrothermal simulations, which can be conducted in either 1D or 2D models, each, respectively, incorporating varying levels of detail regarding the simulated subjects. The 2D simulation offers a more detailed representation of real-world scenarios. Consequently, discrepancies often exist between the results of 1D and 2D simulations in many scenarios. Meanwhile, the 2D simulation demands significantly more computing resources, which may impact the feasibility of certain analyses. For instance, investigating the effects of climate change on building envelope moisture performance includes considering numerous variables such as climate scenarios, wall assembly types, configuration variations, climate data uncertainties, material property uncertainties, among others. Previous attempts have shown that using 2D simulations for such analyses can be extremely time-consuming. Therefore, in this study, the discrepancies between the 1D and 2D simulations regarding the moisture performance output for two types of wood frame wall assemblies will be investigated. The comparison will be conducted for the simulation using climate data from the same time period and from different time periods (historical and future). The results have shown that with specific design considerations in the 1D simulation, the moisture performance obtained from the 1D simulation can match those obtained from the 2D simulation.

The paper will be presented:

Online

Primary U.N. Sustainable Development Goals (SDG)

Climate Action - - Take urgent action to combat climate change and its impacts

Secondary U.N. Sustainable Development Goals (SDG)

Industry, Innovation and Infrastructure - - Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation

Primary CIB Task Group OR Working commission

W040 – Heat and Moisture transfer in Buildings

Secondary CIB Task Group OR Working commission

W023 – Wall Structures

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