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目的应用模糊隶属方法评价公共场所集中空调通风系统的卫生质量。方法应用模糊数学的隶属度理论方法,抽取金华市15家大型公共场所的集中空调系统,对其卫生相关指标进行检测。按照《公共场所卫生综合评价方法》(WS/T 199—2001)进行模糊综合评价。结果公共场所15家集中空调系统卫生质量合格率为53.30%,其中相关指标检测合格率显示,送风细菌总数、送风真菌总数和送风β-溶血性链球菌及冷却水冷凝水中嗜肺军团菌均为100.00%,风管内表面细菌总数为93.33%,风管内表面真菌总数为86.67%,送风PM10为86.67%,风管内表面积尘量为80.00%。集中空调系统卫生质量经模糊隶属度评判,Ⅰ级(良好)的有13家,Ⅱ级(合格)有1家,Ⅳ级(很差)有1家,其中14家卫生质量模糊综合指数均<0.5。结论金华市公共场所集中空调通风系统卫生质量总体尚可,与一般的公共场所合格率评价不尽相同。
Objective To evaluate the hygienic quality of central air conditioning and ventilation system in public places by fuzzy subordination method. Methods Applying the theory of membership degree of fuzzy mathematics, central air-conditioning system of 15 large public places in Jinhua City was extracted, and its health related indexes were tested. According to “public health evaluation method” (WS / T 199-2001) for fuzzy comprehensive evaluation. Results The qualified rate of hygiene quality of 15 central air-conditioning systems in public places was 53.30%. The passing rate of the relevant indexes showed that the total number of airborne bacteria, the total number of airborne fungi, the airborne β-hemolytic streptococcus, The total number of bacteria on the inner surface of the duct was 93.33%. The total number of fungi on the inner surface of the duct was 86.67%. The PM10 on the surface of the duct was 86.67%. The amount of dust on the inner surface of the duct was 80.00%. The health quality of central air-conditioning system was evaluated by fuzzy membership degree. There were 13 grade Ⅰ (good), 1 grade Ⅱ (qualified), 1 grade Ⅳ (very poor), of which 14 were fuzzy < 0.5. Conclusions The health quality of central air conditioning and ventilation system in public places in Jinhua City is generally acceptable, which is different from the evaluation of the passing rate of public places in general.