The difference between oil compressed air and oil free air

There are several major differences between oil-free compressed air and oil-free compressed air. These differences are mainly reflected in whether lubricating oil is used in the compression process, air quality, type of compressor used, and maintenance and use costs.

Whether lubricating oil is used during compression:

oiled compressed air: During the compression process, lubricating oil is used to lubricate the internal parts of the compressor to reduce wear and frictional heat. Lubricating oil will mix with air, so the compressed air will contain a certain amount of oil mist.

Oil-free compressed air: no lubricating oil is used in the compression process, thus avoiding the generation of oil mist and making the air quality higher.

Air quality:

oil compressed air: Due to the presence of lubricating oil, the compressed air will contain a certain amount of oil, which may cause pollution for some applications.

Oil-free compressed air: no oil, higher air quality, suitable for high air quality requirements, such as food, medical, electronics and other industries.

Type of compressor used:

compressed air with oil: usually reciprocating compressors or screw compressors are used. These compressors require lubricating oil during the compression process to ensure normal operation.

Oil-free compressed air: Oil-free screw compressors or centrifugal compressors are usually used. These compressors are designed without lubricating oil.

Maintenance and use costs:

oil compressed air: The lubricating oil needs to be replaced regularly and the waste oil is disposed of, so the maintenance cost is relatively high.

Oil-free compressed air: No need to change the lubricating oil regularly, thereby reducing maintenance costs.

In summary, there are obvious differences between oil-free compressed air and oil-free compressed air in the compression process, which are mainly reflected in the use of lubricating oil, air quality, type of compressor used, and maintenance and use costs. These differences make the two play different roles in their respective fields of application.