Publisher : The Korean Society of Wood Science Technology
DOI : 10.5658/WOOD.2016.44.2.283
Title & Authors
Comparison of Hygrothermal Performance between Wood and Concrete Wall Structures using Simulation Program Yu, Seulgi; Chang, Seong Jin; Kang, Yujin; Kim, Sumin;
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.
Ayerst, G. 1969. The effects of moisture and temperature on growth and spore germination in some fungi. Journal of Stored Products Research 5(2): 127-141.
Bornehag C.G., Sundell, J., Bonini, S., Custovic, A., Malmberg, P., Skerfving, S., Sigsgaard, T., Verhoeff, A. 2004. Dampness in buildings as a risk factor for health effects, EUROEXPO: a multidisciplinary review of the literature (1998-2000) on dampness and mite exposure in buildings and health effects. Indoor Air 14(4): 243-257.
Budaiwi, I., Abdou, A. 2013. The impact of thermal conductivity change of moist fibrous insulation on energy performance of buildings under hot-humid conditions. Energy and Buildings 60: 388-399.
Fang, L., Clausen, G., Fanger, P.O. 1998. Impact of Temperature and Humidity on the Perception of Indoor Air Quality. Indoor Air 8(2): 80-90.
Johansson, P., Ekstrand-Tobin, A., Svensson, T., Bok, G. 2012. Laboratory study to determine the critical moisture level for mould growth on building materials. International Biodeterioration & Biodegradation 73: 23-32.
Johansson, P., Svensson, T., Ekstrand-Tobin, A. 2013. Validation of critical moisture conditions for mould growth on building materials. Building and Environment 62: 201-209.
Joscak, M., Sonderegger, W., Niemz, P., Holm, A., Krus, M., Grosskinsky, T., Lengsfeld, K., Grunewald, J., Plagge, R. 2011. Comparative measurements of heat and moisture transfer in different wood-based building elements. Bauphysik 33: 287-298.
Kunzel, H.M., Holm, A. 1999. Practical assessment of plasters by modern building physical assessment. WTA series of publications.
Kunzel, H.M., Karagiozis, A. 2010. 2 - Hygrothermal behaviour and simulation in buildings. Woodhead Publishing Series in Energy: 54-76.
Ryu, S.H. 2010. Analysis of Energy Efficiency and Hygrothermal Performance in Buildings. thesis, Dankook University, Korea.
Salazar, J., Meil, J. 2009. Prospects for carbon-neutral housing: the influence of greater wood use on the carbon footprint of a single-family residence. Journal of Cleaner Production 17(17): 1563-1571.
Sedlbauer, K. 2001. Prediction of mould fungus formation on the surface of and inside building components. thesis, University of Stuttgart, Germany.
Sedlbauer, K., Breuer, K. 2003. Mould growth prediction with a new biohygrothermal method and its application in practice. thesis, University of Stuttgart, Germany.
Yu S. 2014. Hygrotheraml performance of exterior wall structures using a heat, air and moisture modeling. thesis, Soongsil University, Korea.
Vu, D., Wang, K., Bac, B.H., Nam, B.X. 2013. Humidity control materials prepared from diatomite and volcanic ash. Construction and Building Materials 38: 1066-1072.
Winistorfer, P., Chen, Z.J., Lippke, B., Stevens, N. 2005. Energy consumption and greenhouse gas emissions related to the use, maintenance, and disposal of a residential structure. Wood and Fiber Science 37: 128-139.
Zhang, H.; Yoshino, H. 2010. Analysis of indoor humidity environment in Chinese residential buildings. Building and Environment 45(10): 2132-2140.