Comparison of Hygrothermal Performance between Wood and Concrete Wall Structures using Simulation Program

  • Yu, Seulgi ;
  • Chang, Seong Jin ;
  • Kang, Yujin ;
  • Kim, Sumin
  • Received : 2016.02.04
  • Accepted : 2016.03.15
  • Published : 2016.03.25


Owing to an increase in the air tightness of recent buildings, the natural ventilation rate was significantly lowered and the removal of accumulated moisture became difficult in these buildings. The hygrothermal performance of these buildings should be carefully considered to provide comfortable indoor environment by removing the moisture condensation risk and the mold growth potential. In this study, hygrothermal performance of two selected wall structures was investigated based on WUFI simulation program. The results displayed that the indoor temperature had impact on the moisture accumulation in the insulation layer for both modeled walls, showing that lower indoor temperature resulted in higher moisture accumulation, especially in the wood frame structure. Also, the yearly moisture accumulation profile exhibited a downward shift throughout the year by adding a vapour retarder with a lower sd-value. In addition, both of the two walls have condensation risk in winter, due to low temperature level. The wood frame structure has a bigger fluctuation and higher condensation risk than the concrete structure.


hygorthermal performance;indoor humidity;WUFI;condensation


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Supported by : National Research Foundation of Korea (NRF)