中央空调循环水系统主要分为循环冷却水和循环冷冻水两大部分。其中冷却水系统暴露于大气环境中运行，循环水随着水温变化而浓缩，加之环境中浑浊物的落入沉 积，系统内将会聚集大量水垢、锈垢、微生物、粘泥。冷冻水系统虽为密闭运行，但水中溶解氧接触管道内壁后，会生成氧化铁等腐蚀产物。水垢、锈垢等会堵塞主 机内铜管和风机盘管末端，使水循环变慢，热阻增大，运行成本增加，空调效果下降，设备使用寿命缩短。
The central air conditioning circulating water system is mainly divided into two parts: circulating cooling water and circulating chilled water. The cooling water system is exposed to the atmospheric environment during operation, and the circulating water condenses with changes in water temperature. In addition, the deposition of turbid substances in the environment will lead to the accumulation of a large amount of scale, rust, microorganisms, and sludge in the system. Although the chilled water system operates in a closed environment, dissolved oxygen in the water can generate corrosion products such as iron oxide when it comes into contact with the inner wall of the pipeline. Scale, rust, and other debris can clog the copper pipes and fan coil ends inside the host, slowing down water circulation, increasing thermal resistance, increasing operating costs, reducing air conditioning effectiveness, and shortening equipment lifespan.
系统型的中央空调机组主要由冷冻水循环系统、冷却水循环系统及主机三部分组成:。
The system type central air conditioning unit mainly consists of three parts: the chilled water circulation system, the cooling water circulation system, and the main unit.