AIR CONDITIONING SYSTEM

To provide an air conditioning system capable of achieving highly reactive humidification while saving energy related to humidifying external air and cooling circulation air.SOLUTION: An air conditioning system circulates air among an outdoor unit 2 which supplies an object space S with external air after conditioning the same, an air conditioning unit 1 which supplies the object space S with air supply after preparing the same by taking in circulation air from the object space S and regulating a temperature thereof, and the object space S. The air conditioning system has: a circulation passage 6 which guides the circulation air A3 from the object space S to the air conditioning unit 1; and an external air supply passage 9 which introduces the external air A0 into the circulation passage 6 through the outdoor unit 2. The circulation passage 6: is branched into a humidification passage 13 provided with a vaporization type humidifier (mixed air humidifier) 13b at a downstream side of a confluence point with the external air supply passage 9 and a non-humidification passage 14 not provided with the humidifier; introduces air (mixed air A5), distributed through the humidification passage 13 and the non-humidification passage 14, into the air conditioning unit 1 at a downstream side of the circulation passage; and enables relative flow rates of air distributed through the humidification passage 13 and air distributed through the non-humidification passage 14 to be regulated.SELECTED DRAWING: Figure 1 【課題】外気の加湿に係るエネルギーおよび循環空気の冷却に係るエネルギーを節減しつつ、反応性の良い加湿を実現し得る空調システムを提供する。【解決手段】対象空間Ｓに対し導入する外気を調和して供給する外調機２と、対象空間Ｓからの還気を吸込んだのち温調して給気として対象空間Ｓへ供給する空調機１と対象空間Ｓとの間で空気を循環させる空調システムに関し、対象空間Ｓから空調機１に還気Ａ３を導く還気路６と、還気路６に対し外調機２から外気Ａ０を導入する外気供給路９とを備え、還気路６は、外気供給路９との合流点より下流側において、気化式の加湿器（混気加湿器）１３ｂを備えた加湿路１３と、加湿器を備えない非加湿路１４とに分岐し、加湿路１３および非加湿路１４を流通する空気（混気Ａ５）は、下流側において空調機１に導入されると共に、加湿路１３を流通する空気と、非加湿路１４を流通する空気の相対的な流量を調整し得るよう構成する。【選択図】図１