公共建筑集中空调系统微生物及颗粒物测试分析

Testing and analysis for microbes and particles in central air conditioning systems of public buildings

对哈尔滨市两栋大型公共建筑集中空调系统的送风管道、风机盘管及室内空气中的微生物和颗粒物进行了测试。分析结果表明,空调送风系统对微生物和颗粒物的处理效率不高,对细菌的最高,为73·9%,对0·5~2μm颗粒物的最低,仅有24·4%;系统设备表面和部分送风管道中有真菌生长并向室内传播。认为应适当提高系统过滤器的效率,设置微生物处理装置,并加强对送风系统的维护和清洗。

Tests the concentration of microbes and particles in air supply ducts, fan coil surfaces and indoor air in central air conditioning systems in two large public buildings in Harbin. The analysis results indicate that the treating efficiency of the air conditioning systems to bacteria is the highest （73.9%）, while that to particles with the diameters of 0.5 to 2 t^m is the lowest （24. 4%）, and that there is fungal growth on surfaces of ducts and equipment which can transfer into indoor air. Suggests that it is necessary to enhance the efficiency of filters properly, to add treating devices for microbes and to strengthen the maintenance and cleaning of air supply systems.