The frequency converter is used for the adjustment of pumps and fans, and the chilled water pump. The air conditioning water system (pump) is also a part with a large energy consumption. If it can be considered to be adjusted by the inverter, it will be very beneficial to the system energy saving, especially the system with relatively large load change, which is more energy-saving. However, not all air conditioners use frequency converters are meaningful, and should be analyzed according to specific issues. Cooling water pump. For the cooling water pump, the flow rate can be controlled by the condensing temperature of the refrigeration unit. The power consumption of the pump is calculated by the following formula: where: unit conversion factor; pump efficiency; pipe network resistance characteristic coefficient; however, usually due to the existence of static pressure difference The pressure variation range of the water pump is narrowed. When H is small, the water pump can be controlled by frequency conversion speed regulation; but when H is large, the frequency conversion range of the frequency converter is too narrow due to the limitation of the minimum lift of the water pump, which is energy-saving. Not big. The cooling water temperature should be controlled by a method of controlling the cooling air volume of the cooling tower by using a constant water flow rate. Fan. For a system with a constant supply air temperature, it is beneficial to save energy by adjusting the air volume to meet the air conditioning room load requirements. For a system that uses a solenoid valve to control the water temperature to adjust the return air temperature, it is meaningless to install the inverter. of. After the above analysis of the application of the frequency converter in the field of central air conditioning, it can be seen that although the frequency converter is an ideal energy adjustment means, it can not be adapted under any circumstances. It should be based on the characteristics of the device, the characteristics of the system, and the specific Specific analysis of the problem. Huaian Yile excellent product technology Co., LTD , https://www.weibaoxd.com