How to save energy in compressed air system?

on 2022/11/09 08:33
(1) Frequency conversion operation of air compressor The main energy waste of an air compressor is unloading energy consumption (power frequency compressor). When unloading, the motor runs idly and does not produce air. This method still needs to consume 40% to 70% of the rated power in the case of no gas supply. So the waste is very serious. In addition, when the power frequency air compressor is running at partial load, it is also prone to frequent loading and unloading. It not only wastes energy consumption, but also makes the air supply pressure fluctuate. It also fatigues the motor and compressor. ultimately affect the service life. Therefore, the frequency conversion transformation of air compressors with low and medium loads can greatly reduce the unloading time. It greatly reduce the power consumption of unloading. (2) Dryer energy saving For a normal refrigerated dryer, it consumes electricity but not air. Its power consumption accounts for about 5% of the system power consumption. Generally, it is rarely involved in the process of energy-saving renovation. Unless the equipment is old and performs poorly, consider replacing it with high-efficiency equipment. The desiccant dryer consumes electricity and air. The air consumption of the no-heat regeneration type and the micro-heat regeneration type is above 10%. It's a huge waste of energy. It is recommended to use a zero air consumption desiccant dryer instead. (3) Pipeline energy saving Pipeline energy savings come from two parts: One is to reduce pipeline pressure loss. By reducing the exhaust pressure of the air pressure, the air power consumption is reduced. Under normal circumstances, when the exhaust pressure is reduced by 0.1MPa, the air compressor can save energy by 6% to 7%; The second is to prevent leakage of the pipe network. Pipe network leaks are common in older pipe networks. In terms of leakage, the leakage in the factory usually accounts for 10% to 30% of the air supply. And poorly managed factories can even be as high as 50%. Sometimes there are 20,000 leaks in a car assembly shop. Among them, more than 90% of the leakage comes from the aging or damage of the parts in use.