1. Exhaust pressure
The higher the exhaust pressure of the compressor, the more energy it consumes. The sum of the operating pressure, pipeline resistance loss and the pressure drop of the supporting equipment is set as the lower limit of the rated exhaust pressure of the screw air compressor. Under normal circumstances, the diameter of the gas pipeline should be larger to reduce the resistance loss and achieve the purpose of reducing energy consumption in long-term operation. The higher the exhaust pressure of the compressor, the more energy it consumes. Therefore, do not choose a compressor with too high exhaust pressure.
2. Exhaust volume
Calculate the actual total gas consumption ╳1, 1-1, 2 coefficients as the model of the selected exhaust volume. If it is too low, it will not reach the specified value of the gas-using equipment. If it is too large, it will cause high energy consumption and uneconomical load-reducing work.
3. Compressed air quality
According to the requirements of the working gas-using equipment for the compressor gas, the screw air compressor and supporting equipment should be purchased appropriately. The following points need to be considered:
1) To reduce the oil content in the compressed gas, an oil removal purifier can be used. If the treatment index is high, multi-stage treatment can be selected.
2) To reduce the water content in the compressed gas, a water removal equipment can be used.