Screw Compressor vs Reciprocating Compressor

At present, the two common types of air compressors in industry are screw air compressors and reciprocating air compressors. Today I will introduce the main differences between screw air compressors and reciprocating air compressors.

Screw air compressor VS reciprocating air compressor
1. Working principle
Screw air compressors use two meshing screw rotors to rotate and push gas into the compression chamber, and the gas is compressed as the volume of the chamber decreases.


Reciprocating air compressors compress gas by reciprocating the piston in the cylinder, forming negative pressure to inhale air during suction, reducing the gas volume during compression to increase the pressure, and finally discharge high-pressure gas.

2. Performance comparison
Screw air compressors are more efficient, and their energy consumption and maintenance costs are usually lower than reciprocating air compressors. The operating noise is generally controlled within the range of 65-75 dB.

Reciprocating air compressors generate a large noise due to piston movement, which can generally reach about 85dB, and additional noise reduction components need to be added.


3. Comparison of application scenarios
Screw air compressors are mostly used in manufacturing and processing industries such as automobile manufacturing, electronic processing to provide stable power for pneumatic tools or industrial robots, mining of fossil energy such as oil and natural gas, food packaging, medical equipment, and other fields that require high air purity.

Reciprocating air compressors are mostly used in fields such as firefighting and diving that require higher pressure compressed air, as well as special industrial equipment and other industries.

4. Volume comparison
Screw air compressors use a twin-screw rotor structure, which is small in size and light in weight. The single-unit capacity can reach more than 1000kW, which is suitable for scenarios with limited space. Reciprocating air compressors rely on piston movement, have a relatively complex structure and occupy a large space, and are mostly used in large-scale industrial production clocks.

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