中央空调循环冷却水系统的用水通常分为两类,即未经过任何处理的自来水和软化水。水对设备和管道主要产生影响的因素分别为硬度、碱度、微生物、pH值、Cl~-、氧含量等。自来水因地区不同而水质变化较大,在水的循环过程中,硬度和碱度是造成结垢的主要因素,而Cl~-、低pH、溶解氧、生物粘泥是造成腐蚀的罪魁祸首。而对于软化水而言,失去了结垢性离子Ca~(2+)、Mg~(2+)等,没有结垢问题,同样设备也失去了保护性结垢 Central air conditioning circulating cooling water systems are generally divided into two types of water, that is, untreated tap water and demineralized water. The main influencing factors of water on equipment and pipeline are hardness, alkalinity, microorganism, pH value, Cl ~ -, oxygen content and so on. Water quality varies greatly with different regions. During the water cycle, hardness and alkalinity are the main factors causing scaling. Cl ~ -, low pH, dissolved oxygen and biological sludge are the main culprits. As for the demineralized water, the loss of scaling ions Ca ~ (2 +), Mg ~ (2+), etc., there is no scaling problems, the same equipment also lost protective fouling