【摘要】病菌的传播途径主要是两方面:一方面是手接触的病菌,另一方面是空气呼吸的不流畅,循环病菌传播,尤其医院的中央空调存在问题是不可忽视。随着国家节能减排政策的实施及中央空调技术的发展，医院建筑的中中央空调应用越来越广泛。随着冷却循环水在冷却塔内与空气进行热量交换，医院空气中的菌种在中央空调冷却塔内发生新的变异，冷却塔内的细菌进入到大气环境，威胁到人类健康，如军团菌等。本文从物理法及化学法杀菌灭藻效率影响因素展开分析，确定医院中央空调冷却循环水的杀菌灭藻技术应优先选用化学法。

    【关键词】医院中央空调 冷却循环水 杀菌灭藻 物理法 化学法 物化法

    【Abstract】Transmission of bacteria is mainly two: On the one hand touching the bacteria, on the other hand is not breathing the air flow, cycle the spread of germs, In particular, the hospital's central air conditioning problems cannot be ignored. With the implementation of national energy conservation policy and the central air-conditioning technology, a hospital building in the central air conditioning is widely applied. With the cooling water circulating in the cooling tower and air for heat exchange, the hospital air bacteria occurred in the central air conditioning cooling tower new mutation, cooling tower of the bacteria into the atmosphere, threatening to human health, such as Legionella bacteria etc. This article from the physical method and chemical disinfection of efficiency factors to analyze to determine the hospital cooling tower water disinfection of technology should be preferred chemical method. ......