Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지
DOI QR코드

DOI QR Code

Influence of Air-tightness on Heat Energy Performance in Post and Beam Building with Exposed Wood Frame

  • Kim, Hyun-Bae (Department of Forest Sciences, Seoul National University) ;
  • Kim, Se-Jong (Department of Forest Sciences, Seoul National University) ;
  • Oh, Jung-Kwon (Department of Forest Sciences, Seoul National University, Research Institute for Agriculture and Life Science) ;
  • Park, Joo-Saeng (Div. of Wood Engineering, Dept. of Forest Products, Korea Forest Research Institute) ;
  • Lee, Jun-Jae (Department of Forest Sciences, Seoul National University, Research Institute for Agriculture and Life Science)
  • Received : 2012.09.05
  • Accepted : 2012.09.18
  • Published : 2012.09.25
Download PDF
⟨ Previous Next ⟩

Abstract

Han-green building is one of the modernized Korean traditional buildings developed by Korea Forest Research Institute. This building was developed to increase the competitiveness of Korean traditional building using state-of-art technologies; hence Han-green building has the inherent characteristics of traditional building such as exposed wood frame in wall. Because of discontinuity in wall by the exposed wood frame, there is a concern on heat-air leaking in terms of energy performance. In this study, air-tightness of Han-green building was evaluated to investigate the influence of gaps between frames and in-fill walls. Blower door test was carried out to evaluate the air-tightness, and air-change rate (ACH50) was evaluated by averaging four set of pressurization and depressurization test. The air-change rate of Han-green house was 5.91 $h^{-1}$. To improve energy performance of Han-green house, thermal infrared images of Han-green house were taken in winter with heating to find out where the heat loss occurred. It was found that the building lost more heat through gaps between frames and in-fill walls rather than through other parts of this building. After covering all the gaps by taping, the blower door test was performed again, and the air-change rate was improved to 5.25 $h^{-1}$. From this analysis, it was concluded that the heated air can leak through the gaps between frames and walls. Therefore, when one designs the post and beam building with exposed frame, the detail design between frame and wall needs to be carefully dealt. However, Han-green building showed relatively high air-tightness comparing with other country research results.

Keywords

References

  1. Stein, J. R. and A. Meier. 2000. Accuracy of energy rating systems. ENERGY 25: 339-354. https://doi.org/10.1016/S0360-5442(99)00072-9
  2. Kalamees, T. 2007. Air tightness and air leakages of new lightweight single-family detached house in Estonia. Building and environment 42: 2369-2377. https://doi.org/10.1016/j.buildenv.2006.06.001
  3. Sfakianaki, A., K. Pavlou, M. Santamouris, I. Livada, M.-N. Assimakopoulos, P. Mantas, and A. Christakopoulos. 2008. Air tightness measurements of residential houses in Athens, Greece, Building and Envirionment 43: 398-405. https://doi.org/10.1016/j.buildenv.2007.01.006
  4. Montoya, M. I., E. Pastor, F. R. Carrie, G. Guyot, and E. Planas. 2010. Air leakage in Catalan dwellings: Developing an airtightness model and leakage airflow predictions, Building and Environment 45: 1458-1469. https://doi.org/10.1016/j.buildenv.2009.12.009
  5. Sinnott, D and M. Dyer. 2012. Air-tightess field for dwelling in Ireland. Building and environment 51: 269-275. https://doi.org/10.1016/j.buildenv.2011.11.016
  6. Alfano, F. R., M. Dell'sIsola, G. Ficco, and F. Tassini. 2012. Experimental analysis of air tightness in Mediterranean buildings using the fan pressurization method. Building and environment 53: 16-25. https://doi.org/10.1016/j.buildenv.2011.12.017
  7. Relander, T.-O., T. Kvande, and J. V. Thue. 2010. The influence of lightweight aggregate concrete element chimneys on the airtightness of wood-frame houses, Energy and Buildings 42: 684-694. https://doi.org/10.1016/j.enbuild.2009.11.007
  8. Relander, T.-O., G. Bauwens, S. Roels, J. V. Thue, and S. Uvslokk. 2011. The influence of structural floors on the airtightness of woodframe houses, Energy and Buildings 43: 639-652. https://doi.org/10.1016/j.enbuild.2010.11.005
  9. Relander, T.-O., B. Heiskel, and J. S. Tyssedal. 2011. The influence of the joint between the basement wall and the wood-frame wall on the airtightness of wood-frame houses, Energy and Buildings 43: 1304-1314. https://doi.org/10.1016/j.enbuild.2011.01.010
  10. Langmans, J., R. Klein, M. D. Paepe, and S. Roels. 2010. Potential of wind barriers to assure airtightness of wood-frame low energy constructions, Energy and Buildings 42: 2376-2385. https://doi.org/10.1016/j.enbuild.2010.08.021
  11. Nabinger, S., and A. Persily. 2011. Impacts of airtightening retrofits on ventilation rates and energy consumption in a manufactured home, Energy and Buildings 43: 3059-3067. https://doi.org/10.1016/j.enbuild.2011.07.027
  12. Jesica, F.-A., J. S. Juan, and D. Samuel. 2011. Protocols for measuring the airtightness of multidwelling units in Southern Europe, Procedia Engineering 21: 98-105. https://doi.org/10.1016/j.proeng.2011.11.1992
  13. Park, W. S. and J. O. Yoon. 2003. The Field Measurement of Airtightness in the Apartment Buildings. Korea Institute of Ecological Architecture and Environment 9: 43-50.
  14. Yoon, J. H, J. W. Park, K. S. Lee, N. C. Beak, and U. C. Shin. 2008. A study on the measurement of air-tightness performance of detached houses in Chung-cheong area. Journal of the Korean Solar Energy Society 5: 65-71.
  15. Kim, K. L, J. H. Kim, and H. Y. Kim. 2008. Analysis of the air exchange rate which follows in airtightness performance of the studio building. Journal of Architectural Institude of Korea 1: 983-986.
  16. Koo, S. H, J. H. Jo, M. S. Yeo, and K. W. Kim. 2010. A study on the Characteristics of Airtightness in High-rise Residential Building by Field Measurement. Architectural Institue of Korea 1: 757-760.
  17. ASTM E 741-00. 2004. Standard Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution.
  18. ASTM E 779-03. 2004. Standard Test Method for Determining Air Leakage Rate by Fan Pressurization.
  19. ISO 9972. 2006. Determination of air permeability of buildings - Fan pressurization method.
  20. The Energy Conservatory. 2010. Minneapolis Blower Door Operation Manul for Model3 System.