Analysis of Air Supply Quality of Central Air-conditioning Ventilation System in Building before and after Cleaning
- VernacularTitle:集中空调通风系统清洗前后空调送风卫生质量分析
- Author:
Chongshan GUO
;
Yi ZHONG
;
Xiaohui LI
- Publication Type:Journal Article
- Keywords:
Air pollution,indoor;
Central air-conditioning ventilation system;
Cleaning effect;
Air-conditioning air supply
- From:
Journal of Environment and Health
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To know the air supply quality of central air-conditioning ventilation system in building before and after cleaning.Methods Three sets of central air-conditioning ventilation systems were selected from a building randomly and 3 air supply ways were selected in each system for the determination of inhalable particulate matter(PM10) and microorganisms in air before and after cleaning.Results After cleaning,the unqualified rate of air quality increased from 11.1%(before cleaning) to 77.8%.The mean value of PM10 increased from 0.051 mg/m3(before cleaning) to 0.083 mg/m3,the median of total account of bacteria and fungus increased from 150 cfu/m3 and 13 cfu/m2(before cleaning) to 570 cfu/m3 and 110 cfu/m3 respectively.Conclusion The air supply quality of central air-conditioning ventilation system in building may be damaged by cleaning if the operation is not in the right way.
