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2019 Vol.13, Issue 6 Preview Page

Research Article

Measurement of Indoor CO2 Concentration According to the Level of Building Airtightness

건물 기밀성능에 따른 실내 이산화탄소 농도 변화 측정

Seung-Hoon Park1
,
Dong-Seok Lee1
,
Kyung-Hwan Ji1
,
Won-Seok Jang1
,
Jae-Hun Jo2
,
Eui-Jong Kim3*
박 승훈1
,
이 동석1
,
지 경환1
,
장 원석1
,
조 재훈2
,
김 의종3*
1Ph.D student, Department of Architectural Engineering, Graduate School of Inha University
2Professor, Department of Architectural Engineering, Inha University
3Assistant professor, Department of Architectural Engineering, Inha University
1인하대학교 대학원 건축공학전공 박사과정
2인하대학교 건축학부 건축공학전공 교수
3인하대학교 건축학부 건축공학전공 조교수
* Corresponding Author
30 December 2019. pp. 527-535
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Abstract

Keeping indoor air quality (IAQ) within allowable health ranges is one of the important issues in Korean society. Since CO2 is generated by occupants’ breathing, adequate ventilation must be ensured particularly for a room with high occupancy density. Effective ventilation rates for rooms may be variable according to the level of building airtightness. This study aims to measure the indoor CO2 concentration variation for a room with different levels of building airtightness. A test classroom was sealed to make distinct CO2 levels compared to the unsealed case, and measurements were achieved for various operation cases. Results showed that measured CO2 levels were different between the two cases (normal and sealed) when the ventilator was switched-off, but they were more similar for mechanically ventilated cases. This measurement result seemed to follow the conventional assumption that infiltration is negligible for mechanically ventilated rooms, but further studies are required as a slight difference in CO2 concentration was still found.

Keywords
Carbon dioxide
Airtightness
Ventilation
Classroom

키워드
이산화탄소
기밀성능
환기
강의실
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 13
  • No :6
  • Pages :527-535
  • Received Date : 2019-11-18
  • Revised Date : 2019-12-04
  • Accepted Date : 2019-12-04
  • DOI :https://doi.org/10.22696/jkiaebs.20190045
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