Single screw and twin screw compressor comparison

Balanced

Single-screw compressors: The radial and axial gas forces that the screw is subjected to can be automatically balanced, and the spider teeth are subjected to gas forces requiring that the star teeth have sufficient strength and rigidity.

Twin-screw compressor: Screw rotor to withstand greater radial and axial gas force, requiring the screw has sufficient strength and rigidity.

Manufacturing costs

Single-screw compressor: Screw and star bearings can be used ordinary bearings, lower manufacturing costs.

Twin Screw Compressor: As the two screw rotor load is relatively large, require the use of high precision bearings, manufacturing costs are higher.

Reliability aspects

Single-screw compressor: Single-screw compressor star is wearing parts, in addition to the star wheel materials have higher requirements, the star also need to be replaced regularly.

Twin Screw Compressor: There are no wearing parts in the twin screw compressor, trouble-free operation time can reach 4 to 80,000 hours.

Efficiency

In the new machine state, single screw compressor and twin screw compressor efficiency is basically the same. As run times increase, star wheel wear in single-screw compressors will result in reduced gas consumption and lower efficiency. Noise and vibration Single-screw compressor and twin-screw compressor noise and vibration are basically the same.

Processing equipment

Single-screw compressor: no mature special processing equipment, which led to the performance of the product is not very stable.

Twin Screw Compressor: There are already mature screw milling machine and grinder to ensure stable performance. Single-screw compressors and twin-screw compressors work and maintain the same routine for work and maintenance.

Applicability

Single-screw compressor: suitable for high exhaust pressure of the occasion, such as high-pressure air compressors, refrigeration compressors and natural gas compressors.

Twin Screw Compressors: Twin-screw compressors can only be used in medium and low pressure ranges due to rotor rigidity and bearing loads, such as power air compressors, refrigeration compressors and low pressure natural gas compressors, etc. Exhaust pressure Generally can not exceed 4.5MPa.