The invention discloses an air-conditioning
system with combined operation of evaporative cooling, cold
water storage and night ventilation. The air-conditioning
system comprises a
machine unit shell, wherein a
fresh air inlet is formed in one side wall of the
machine unit shell; an air conveying port is formed at the lower part of the side wall, opposite to the
fresh air inlet, of the
machine unit shell; a cold water /
cold air machine unit for the evaporative cooling is arranged inside the machine unit shell; a cold
water storage tank and a user side are arranged outside the machine unit shell; and the cold water /
cold air machine unit for the evaporative cooling, the cold
water storage tank and the user side are connected with one another through a
pipe network. According to the air-conditioning
system provided by the invention, the cold water /
cold air machine unit for the evaporative cooling can be started at night to make cold water and cold air by virtue of a power trough and
electricity price difference, the cold water is stored in the cold waster
storage tank and is supplied to a user at
daytime, the cold air is supplied into a room directly to exchange hot air stored in the room, and then the cold load in the room is decreased.