| abstract |
(57) [Summary] [Object] To provide a method for sterilizing indoor air supplied to an air-conditioning system of a building or the like which has a sufficient sterilizing effect, has a small adverse effect on human health, is inexpensive, and uses a small amount of sterilizing solution. That is. According to a method for sterilizing an air conditioning system, sterilizing water is sprayed on air supplied to a room of an air conditioning system to sterilize the air. In addition, a method of sterilizing the indoor supply air of the air conditioning system by spraying or wetting sterilizing water onto the filter in an air conditioning system for filtering the indoor supply air of the air conditioning system with a filter. Further, the sterilizing solution is an aqueous solution containing chlorine, The sterilizing solution has an effective chlorine concentration of 0.2 to 1000 ppm. And the pH is adjusted to 2.0 to 8.0 by adding an acid to the hypochlorous acid-containing aqueous solution. [Effect] Sufficient sterilization and antibacterial effects can be achieved inexpensively, easily and safely. |