Screw compressor market potential is huge

1. With the improvement of people's requirements for energy saving, environmental protection, low-carbon and other aspects, refrigeration units have also begun to develop in the direction of energy saving and consumption reduction, so that in recent years, the development of refrigeration compressor manufacturing industry has made rapid progress. Among them, screw refrigeration compressor with its no-clearance volume, high efficiency, energy saving, environmental protection and other advantages, has the trend of replacing piston compressor. It is expected that by 2016, the market size of screw compressors in China will reach 15.9 billion.

Advantages of screw compressor

The screw refrigeration compressor uses two screws with spiral grooves placed in the body to mesh and rotate and cooperate with the inner wall of the body and the inner wall of the suction and exhaust end seat, resulting in changes in the volume between the teeth, so as to complete the process of gas inhalation, compression and discharge.

In recent years, with the continuous improvement of tooth shape and other structures, the performance has been greatly improved. In addition, the screw compressor has no clearance volume, high efficiency, and no wearing parts such as suction and exhaust valve devices. Therefore, at present, screw refrigeration compressor has become an advanced refrigeration compressor, especially oil-injection screw compressor is one of the main types of refrigeration compressor, has been widely used.

With the development of refrigeration compressor manufacturing industry, screw refrigeration compressors have replaced the trend of piston compressors. Screw refrigeration compressor with small size, light weight, easy maintenance and other characteristics, in the compressor market share increased year by year.

Development of screw compressors in China

China's research on screw compressors dates back to the 1970s: In 1975, Shanghai ** refrigeration machine factory completed the manufacturing of China's first ammonia injection twin screw refrigeration compressor.

By 2012, the sales volume of single screw air compressors and single screw process compressors in China reached a new high of 13,153 and 553 sets, an increase of 8.4% and 8.3%, respectively. Twin-screw air compressors sold 73,654 units, down 1.6% from last year, while twin-screw process compressors sold 56 units, up 4.5% from 2011.

The replacement of screw for reciprocating compressor will continue. However, in terms of sales volume, the share of screw compressors in China's air compressor market is still less than 20%, far lower than developed countries (share of more than 80%), so the alternative space for screw reciprocating compressors is still very large. In addition, the "Twelfth Five-Year Plan" once again put forward the energy efficiency target of air compressors, and launched the relevant energy conservation and environmental protection policies, which will further highlight the energy-saving advantages of screw compressors. It is expected that by 2016, the share of screw compressors in China's air compressor market will reach 78.5%, and the market size of screw compressors will hit 15.9 billion yuan.