论文部分内容阅读
采用水泵供水系统，管路压力通常靠人工调整阀门实现，对电和水造成很大浪费．本文介绍的PLC VVVF自动恒压供水系统，节电和节水效果明显．
The use of pump water supply system, the pipeline pressure is usually manually adjusted valve to achieve, a great waste of electricity and water. This article describes the PLC VVVF automatic constant pressure water supply system, energy-saving and water-saving effect is obvious.