The essentials of air compressor selection

The essentials of air compressor selection

When buying an air compressor, in addition to the purchase cost, how to reduce electricity expenses? How to extend the service life of the air compressor? How to provide air pressure smoothly? And how to reduce noise pollution? These are all issues that users care about. The correct choice of air compressor plays a key factor. When choosing an air compressor, you must first understand the following 10 points:

　　 1. Uses of compressed air

　　2, the minimum operating pressure and the amount of compressed air required per minute

　　3, cutting-edge and off-peak demand gas. If the difference between the highest and lowest operating pressure reaches 3bar, you must consider the "high and low pressure split", and then choose different types of air compressors according to the changes in the peak and off-peak burdens, such as "base load" using centrifugal (single machine> 75CMM) or spiral type (single machine<60CMM): "Variable load" uses a high-pressure air machine to cooperate with a large air tank.

　　4. Choose and configure different types and grades of dryers and precision filters according to different gas quality. Too good quality wastes energy, and insufficient quality affects the manufacturing process, which must be carefully considered.

5. The control technology of the air compressor is changing with each passing day. "Multi-machine interlocking", "frequency conversion" and "remote monitoring" technologies can effectively suppress centrifugal BOV and spiral no-load waste (saving electricity costs by 25-40%) , Reduce spare capacity and investment (15-30%), stabilize air supply pressure (plus or minus 0.1 bar).

　　6. ​​The operating efficiency cannot only be compared with the nominal horsepower and air volume in the catalog. The focus is on the actual "performance curve" and "air volume per horsepower".

　　7. Considering the size of the computer room space, ventilation conditions, noise isolation, waste heat, waste water recycling, etc. all induce energy use. In addition, the centralized type has lower installation, maintenance and control costs than the distributed type, and can also reduce peripheral equipment.

8. As for the cooling method, there are two types: air-cooling and water-cooling. Air-cooling does not require additional investment in cooling tower rainwater, but it must have good ventilation: water-cooling is that the operating temperature is not affected by the environment, which is beneficial to the life of the air compressor, but it does exist Disadvantages of icing burst and blockage.

　　9. The stability of the voltage demand and voltage drop of the power supply plan must be required. The centrifuge is usually high-voltage and cannot be moved at all. It will cause an impact on the grid when starting, and it should be kept in regular operation.

　　10. The maintenance room must have proper maintenance space and necessary lifting facilities and access channels. Engineering personnel and maintenance should also undergo different professional maintenance training.