Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Estimation of Ventilation Rates in Korean Homes Using Time-activity Patterns and Carbon Dioxide (CO2) Concentration

시간활동양상 및 이산화탄소 농도를 이용한 한국 주택 환기량 추정

  • Park, Jinhyeon (Department of Occupational Health, Daegu Catholic University) ;
  • Ryu, Hyeonsu (Department of Occupational Health, Daegu Catholic University) ;
  • Heo, Jung (Department of Occupational Health, Daegu Catholic University) ;
  • Cho, Mansu (Department of Occupational Health, Daegu Catholic University) ;
  • Yang, Wonho (Department of Occupational Health, Daegu Catholic University)
  • 박진현 (대구가톨릭대학교 산업보건학과) ;
  • 류현수 (대구가톨릭대학교 산업보건학과) ;
  • 허정 (대구가톨릭대학교 산업보건학과) ;
  • 조만수 (대구가톨릭대학교 산업보건학과) ;
  • 양원호 (대구가톨릭대학교 산업보건학과)
  • Received : 2019.01.29
  • Accepted : 2019.02.20
  • Published : 2019.02.28
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Abstract

Objectives: The purpose of this study was to estimate the ventilation rate of residential homes in Korea through tracer gas methods using indoor and outdoor concentrations of carbon dioxide ($CO_2$) and $CO_2$ generation rates from breathing. Methods: In this study, we calculated the number of occupants in a home by time through data on the average number of people per household from the Korean National Statistical Office and also measured the amount of $CO_2$ generation by breathing to estimate the indoor $CO_2$ generation rate. To estimate the ventilation rate, several factors such as the $CO_2$ generation rate and average volume of residential house provided by the Korean National Statistical Office, indoor $CO_2$ concentrations measured by sensors, and outdoor $CO_2$ concentrations provided by the Korea Meteorological Administration, were applied to a mass balance model for residential indoor environments. Results: The average number of people were 2.53 per household and Koreans spend 61.0% of their day at home. The $CO_2$ generation rate from breathing was $13.9{\pm}5.3L/h$ during sleep and $15.1{\pm}5.7L/h$ in a sedentary state. Indoor and outdoor $CO_2$ concentrations were 849 ppm and 407 ppm, respectively. The ventilation rate in Korean residential houses calculated by the mass balance model were $42.1m^3/h$ and 0.71 air change per hour. Conclusions: The estimated ventilation rate tended to increase with an increase in the number of occupants. Since sensor devices were used to collect data, sustainable data could be collected to estimate the ventilation rate of Korean residential homes, which enables further studies such as on changes in the ventilation rate by season resulting from the activities of occupants. The results of this study could be used as a basis for exposure and risk assessment modeling.

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References

  1. Yang W, Lee K, Park K, Yoon C, Son B, Jeon J et al. Microenvironmental Time Activity Patterns of Weekday and Weekend on Korean, Korean Journal of Environmental Health. 2009; 29(10): 267-274.
  2. United State Environmental Protection Agency. Improving Indoor Air Quality. https://www.epa.gov/indoor-air-quality-iaq/improving-indoor-air-quality# Ventilation_Improvements [accessed 22 January 2019]
  3. Ring E, Brager G, Occupant Comfort, Control, and Satisfaction in Three California Mixed-mode Office Buildings. ACEEE Summer Study on Energy Efficiency in Buildings. 2000; 8.314-8.328.
  4. Sundell J. On the history of indoor air quality and health. Indoor Air. 2004; 14(7): 51-58. https://doi.org/10.1111/j.1600-0668.2004.00273.x
  5. Perez-Padilla R, Schilmann A, & Riojas-Rodriguez H. Respiratory health effects of indoor air pollution. The International Journal of Tuberculosis and Lung Disease. 2010; 14(9): 1079-1086.
  6. World Health Organization. 7 million premature deaths annually linked to air pollution. https://www.who.int/mediacentre/news/releases/2014/air-pollution/en/ [accessed 22 January 2019]
  7. The Ministry of Land, Transport and Maritime Affairs. Regulation for Facility in Building. 2009.
  8. Mochida K, Hattori M, Tanaka Y, Kashihara S, Yoshida K, Tajima M et al. Ventilation measurement using PFT method. Indoor Air. 2008.
  9. Moon J, Park M, Cha K, Lee J. Measurement of air change rate in an underground parking lot with natural ventilation by trace gas method. The Society of Air-Conditioning and Refrigerating Engineers of Korea Winter Annual Conference. 2002; 479-483.
  10. KOSIS. Korean Statistical Information Service. Population Census. 2016. [accessed 22 January 2019]
  11. Korean National Statistical Office. Time use survey. 2014.
  12. Ryu H, Yoon H, Eom I, Park J, Kim S, Cho M et al. Time-activity pattern assessment for Korean student. Korean Journal of Environmental Health. 2018; 44(2): 143-152.
  13. Lordo B, Sanford J, Mohnson M, Schuda L, Moya J. Metabolically Derived Human Ventilation Rates: A Revised Approach Based Upon Oxygen Consumption Rates (Final Report, 2009). Environmental Protection Agency. 2009. p. 4-1-4-14.
  14. Kim J, Lee B, Lee K, Kim T, Yoon H, Kang S et al. Indoor thermal environmental big data from IoT. Korean Society of Indoor Environment Annual Conference. 2016. 137-138.
  15. Yang W, Bae H, Chung M. Korean Journal of Environmental Health. 2002; 28(2): 183-192.
  16. Yang W, Bae H, Lee K, Chung M. A study on the error associated with ventilation rate calculation using different sampling intervals. Korean Journal of Environmental Health. 2000; 26(3): 50-54.
  17. Korea Meteorological Administration. Report of Global Atmosphere Watch 2016. 2017. p. 16-19.
  18. Persily A and de Jonge L. Carbon dioxide generation rates for building occupants. Indoor Air. 2017; 27(5): 868-879. https://doi.org/10.1111/ina.12383
  19. Huh Y, No S, Kim K. A Study about Natural Ventilation Analysis Methods for Apartment Buildings Using CFD. Journal of the architectural institute of Korea. 2009; 25(6); 221-228.
  20. Yang W, Lee K, Chung M. Characterization of indoor air quality using multiple measurements of nitrogen dioxide. Indoor Air. 2003; 14(2) 105-111. https://doi.org/10.1046/j.1600-0668.2003.00216.x
  21. Yeom H, Park J. Evaluation of Natural Ventilation Rate Based on Indoor $CO_2$ Concentration. Architectural Institute of Korea Conference Proceedings. 2018; 38(1): 376-379.
  22. Choi S, Kim S, Yee J. The effect on indoor air quality improvement by ventilation rate in newly built apartment. Korean Journal of Air-Conditioning and Refrigeration Engineering. 2006; 18(8): 649-655.
  23. Jacobsen E, Nielsen I, Schjoth-Eskesen J, Fischer C, Larsen P, Andersen D, Risk assessment of 3D printers and 3D printed products. The Danish Environmental Protection Agency. 2017; 161: p. 28-35.
  24. Chan W, Joh J, Sherman M. Analysis of air leakage measurements of US houses. Energy and Buildings. 2013; 66: 616-625. https://doi.org/10.1016/j.enbuild.2013.07.047
  25. Lee D, Ji K, Jo J. Study on the establishment of large building airtightness measurement standards. Journal of the Korean Solar Energy Society. 2014; 34(1): 117-124. https://doi.org/10.7836/kses.2014.34.1.117
  26. Lee K, Kim S, Sohn J. The Comparison of Measured and Calculated Air Leakage Rate caused by Wind Pressure and Temperature Difference in High-Rise Apartments. Architectural Institute of Korea Conference Proceedings. 2004; 24(2): 1127-1130.
  27. Shuqing C, Michael CC, Pascal S, Dominique M. $CO_2$ tracer gas concentration decay method for measuring air change rate. Building and Environment. 2015; 84: 162-169. https://doi.org/10.1016/j.buildenv.2014.11.007