北京五星级宾馆集中空调通风系统污染现状的调查

目的 调查北京市宾馆集中空调通风系统污染状况。方法 在2003年8-10月间对北京市5家五星级宾馆的集中空调通风系统进行现场采样、检测和录象。结果 5家宾馆的7个系统中，有6个系统积尘量属严重污染，1个系统属中等污染；积尘中细菌总数有4个系统属中等污染，霉菌总数有5个系统属中等污染；录象资料显示管道内污染有霉斑、施工垃圾，积尘较厚。结论 5家宾馆集中空调通风系统污染较为严重。

Investigation on Pollution Status of Centralized Air Conditioning-Ventilating Systems in Five-Star Grade Hotels in Beijing

Objective To investigate the actual pollution status of heating-ventilating-air conditioning(HVAC) systems in five-star grade hotels in Beijing. Methods Seven sets of centralized HVAC system from five five-star grade hotels in Beijing were selected for sampling monitoring and videotaping in situ from August 2003 to October 2003. Results There were six sets HVAC systems seriously polluted and one set was in moderately polluted according collected dust weight. The total counts of bacteria in the dust were in medium pollution grade in four sets of HVAC systems; The total quantity of fungus in the dust were in medium pollution grade in five sets of HVAC systems; The video materials showed that inside the air duct there were fungus, construction rubbish and deposit of large quantity of dust. Conclusion The HVAC systems of those five hotels were seriously polluted.