Abstract
With four groups of meteorological data from two representative cities in the Hot-Humid climate region of North America as external conditions, exterior walls are constructed in WUFI Plus, and the coupled heat and moisture process simulation is performed. Annual exterior walls’ hygrothermal performance, the indoor hygrothermal environment, and HVAC demand are chosen as indicators, for which factors impact analysis is carried out to investigate the effect of the partition boards, air layer, thermal insulation infill, and moisture-control infill layers, as well as the façade rainfall treatment, on the hygrothermal performance of the building envelope. Climate-responsive design suggestions in Hot-Humid climate region are generated from the analysis results, in terms of material and construction parameter optimization.
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Notes
- 1.
sd, Water vapor diffusion thickness (equivalent air layer thickness), m. It characterizes the resistance against water vapor diffusion of the construction layer and is numerically equal to the thickness of the air layer with the same resistance. There is sd = µ × s, where µ is the vapor diffusion resistance factor of the material, and s is the thickness of the construction layer.
- 2.
Generally, the indoor air temperature Ti in the range 20–26 °C and the relative humidity RHi in the range 40–60% are regarded as the corresponding comfort range. However, in this study, the annual hours of Ti and RHi in these ranges are too little, and the hours of RHi between 40 and 60% are even 0 in certain cases, which makes it unable to be compared by the ratio between the BC and NC model groups. Therefore, as the evaluation indicators, the range of RHi and Ti are, respectively, enlarged to 30–70% and 18–28 °C.
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Huang, Z. (2019). Hygrothermal Performance Optimization on Bamboo Building Envelope in Hot-Humid Climate Region. In: Application of Bamboo in Building Envelope . Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-12032-0_5
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DOI: https://doi.org/10.1007/978-3-030-12032-0_5
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