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ISSN : 2288-9167(Print)
ISSN : 2288-923X(Online)
Journal of Odor and Indoor Environment Vol.14 No.2 pp.128-135

Theoretical investigation on clean air delivery rate and cost-effectiveness of indoor environment control technologies in a child care center

Kwang-Chul Noh*
Department of Mechanical and Information Engineering, University of Seoul
*Corresponding author Tel : +82-2-6490-5783 E-mail :
23 April 2015 27 May 2015 8 June 2015.


Ventilation devices and room air cleaners can be used to remove indoor contaminants from indoor air. Generally,room air cleaners are rated according to clean air delivery rate (CADR). However, a similar metric for ventilationhas not been used to be compared with CADR of room air cleaner. The CADRs and cost-effectiveness metrics(CADR/kw) of ventilation devices and room air cleaners were newly defined and theoretically compared for achild care center. The results indicate that the CADRs of room air cleaner were greater than that of ventilation.A higher collection efficiency for the particles guaranteed a higher CADR for ventilation. Ventilation filter hada performance that exceeds MERV11 should be used to effectively control the indoor particle concentration. Thestand alone type air cleaner was found to have the best performance in the cost-effectiveness. The reason for thisis that the effective air cleaning ratio of the stand alone type air cleaner is higher than that of the others and thepower consumption of the stand alone type air cleaner is lowest.

실내 환경 관리기술의 청정화능력 및 비용-효과에 대한 이론적 고찰

서울시립대학교 기계정보공학과