摘要
在我国能源紧缺,提高能源的利用率,为现代化建设提供能源保证迫在眉睫。实践证明,在中央空调的循环系统(冷却泵和冷冻泵)中接入PLC和变频器组成的PID闭环控制系统,利用变频技术改变电机转速来调节流量和压力的变化,取代用阀门控制流量,能取得明显的节能效果。
Energy is scarce in our country. It is imminent to improve energy utilization efficiency for China modem construction. The practices prove that PLC and the frequency change finish PID closed- loop control in cooling pumps and freezing pumps of the central air conditioning circulatory system can obtain the obvious energy saving effect.
出处
《节能技术》
CAS
2008年第1期60-63,共4页
Energy Conservation Technology
关键词
中央空调
PLC
PID
变频
节能
Central air conditioning
PLC
PID
Frequency conversion
Energy saving
