1) If the exhaust temperature of the oil-injected screw air compressor is lowered by 8~10°C, the life of the compressor oil will be doubled;
2) The exhaust pressure of single-stage oil-injected screw compressors ranges from 0.3 to 1.3 MPa. Due to the difference in exhaust temperature and oxygen partial pressure, the oxidation rate of air compressor oil is very different. The low-pressure air compressor with an exhaust pressure of 0.3 MPa The real life of lubricating oil is 3~5 times longer than that of air compressors with exhaust pressure of 1.3MPa;
3) The lubricating oil of the nitrogen compressor is not affected by oxygen, and the real life is much longer than that of the same type of air compressor;
4) The oil acid value of similar screw compressors that compress carbon dioxide gas is easy to exceed the standard, and the real life is short;
5) The two-stage compression air compressor with normal pressure oil injection has high energy efficiency due to the low oxygen partial pressure and low exhaust temperature at each stage, and the real life of the lubricating oil is about 2 times longer than that of the same type of single-stage air compressor;
6) The compressor oil life of the single-stage screw air compressor with high compression ratio is short;
7) Due to the low exhaust temperature of the variable frequency oil injection screw air compressor during the frequency conversion, the shearing effect of the compressor on the lubricating oil is lighter than that of the ordinary capacity air compressor, the real life of the lubricating oil is long, the frequency conversion time and the frequency conversion depth are different, the lubrication The real life of the oil is different;
8) In order to improve energy efficiency, some air compressor manufacturers and users increase the fan of the air-cooled oil-injected screw air compressor and reduce the exhaust temperature of the screw compressor, which not only reduces power consumption, but also prolongs the life of the compressor. The service life of the oil is achieved, and the effect of energy saving and environmental protection is achieved.
9) The real life of centrifugal compressor oil and piston compressor oil is much longer than that of oil-injected screw air compressors.
