Analysis of CA Certification Performance Test Results and Improvement of CA Test Method for a Better Differentiation of Gas Removal Performances for Room Air Cleaners

공기청정기 CA 규격성능시험 결과 분석 및 가스시험 변별력 향상 방안연구

  • Kim, Hak-Joon (Environmental Systems Research Division, Korea Institute of Machinery & Materials(KIMM)) ;
  • Han, Bangwoo (Environmental Systems Research Division, Korea Institute of Machinery & Materials(KIMM)) ;
  • Kim, Yong-Jin (Environmental Systems Research Division, Korea Institute of Machinery & Materials(KIMM)) ;
  • Cha, Sung-Il (Korea Air Cleaning Association)
  • 김학준 (한국기계연구원 그린환경기계연구본부) ;
  • 한방우 (한국기계연구원 그린환경기계연구본부) ;
  • 김용진 (한국기계연구원 그린환경기계연구본부) ;
  • 차성일 (한국공기청정협회)
  • Received : 2011.08.01
  • Accepted : 2011.09.20
  • Published : 2011.09.30

Abstract

In this study, we organized the test results obtained from the performance tests for the CA certificated air cleaners which had been commercially available in Korea since 2003, and analyzed the correlation among the test parameters such as flow rate, particle collection efficiency, clean air delivery rate (CADR), ozone emission, odor removal efficiency and noise level etc. The noise level of 267 air cleaners were increased as concentrated at the 45, 50, 55 dB, which are the required noise level for CA certification according to flow rate, and ozone emissions from the CA air cleaners were significantly lower than the requirement limit, 50 ppb for 24 hour operation. The average particle collection efficiency and odor removal efficiency were 89.3 and 80.8%, approximately 20% higher than the requirement of CA certification, regardless of flow rates. The particle removal performance of an air cleaner was clearly discriminated by its CADR, and the CADR was obtained with a simple calculation: 0.79 x flow rate. The low differentiation of gas removal performance of air cleaners by the current CA gas test method was improved by 3.2, 751.3, 13.4 times for ammonia, acetic acid, respectively, by adopting the CADR concept and the real time measurement method, FTIR, for gas removal performance test.

Acknowledgement

Supported by : 한국기계연구원

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