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目的探讨集中空调通风系统清洗效果以及清洗对室内空气质量的影响。方法选取2010—2012年间清洗集中空调通风系统的12家宾馆,对清洗前后的风管和室内空气质量相关指标进行检测。结果与清洗前比较,清洗后集中空调风管积尘中的细菌总数和真菌总数下降,室内空气中的可吸入颗粒物降低,短期内室内空气中细菌总数降低(均P<0.05)。结论集中空调清洗可减少风管污染,有助于改善室内空气质量。
Objective To explore the cleaning effect of central air conditioning and ventilation system and the effect of cleaning on indoor air quality. Methods Twelve hotels in central air-conditioning and ventilation systems were cleaned during 2010-2012, and air duct and indoor air quality indicators before and after cleaning were tested. Results Compared with those before cleaning, the total number of bacteria and total fungi in the dust of centralized air-conditioning ducts decreased after cleaning, the respirable particulate matter in indoor air decreased and the total number of bacteria in indoor air decreased in the short term (all P <0.05). Conclusion Central air-conditioning cleaning can reduce air duct pollution, help to improve indoor air quality.