In the refrigeration process, the compressor is frequency-controlled and has obvious energy-saving effect: when the actual load is less than the rated load, the compressor runs at low speed, which reduces the compression ratio, which can not only improve the compressor efficiency. The output power of the compressor, and the condensation temperature and condensing pressure are lowered, and the refrigeration coefficient COP is increased. Another feature is that the chiller can operate continuously under the optimal working conditions under different loads, and the temperature requirements for freezing and refrigerating are fluctuated. Small occasions are more suitable. Schematic diagram of air conditioning variable frequency variable air volume control system - controller; - blower; "return fan" - "frequency control device; - controller; - electric damper; - pressure sensor; - temperature sensor diagram chiller frequency conversion speed control system principle Figure - compressor; - condenser; - liquid storage; "expansion valve; - evaporator; - pressure sensor; - frequency conversion speed controller focus on the "frequency conversion technology" column compressor frequency control, is a constant torque The type of load is generally proportional control. After the energy-saving effect analysis and calculation adopts the frequency conversion speed regulation technology, the system circulating flow is variable flow control, and the energy-saving effect is the most obvious, which can be calculated according to relevant theories and experience. Energy-saving principle of frequency conversion speed-regulating pump Inverter note In the water treatment industry, AC frequency conversion speed control devices are generally divided into two series, one is ordinary type, the other is high-performance type, which is suitable for low-demand fan pump Types of speed control for compressors and other applications where wide speed range is required. It can be seen that the speed control method has a large energy saving effect. Metal drawer series includes the metal drawer on truck or other places, we can produce it according to customized size or design and ODM business are widly accepted. Truck Metal Box,Truck Metal Cabinet,Aluminum Storage Drawer,Truck Storage Metal Drawer Foshan Dinghan Electrical Technology Co., Ltd , https://www.fsdinghanelectrical.com