1. When choosing the volume flow of the air compressor, you should first understand the volume flow of all the gas-consuming equipment, and multiply the total flow by 1.2 (that is, enlarge the 20% margin);
2. The new project can be selected according to the flow value provided by the design institute;
3. Ask the gas equipment supplier to understand the volume flow parameters of the gas equipment for selection;
4. Air compressor station transformation can refer to the original parameter value and the actual gas consumption for selection;
Appropriate selection is beneficial to both the user and the air compressor equipment. Too large selection is wasteful, and too small selection may cause the air compressor to be in a loaded state for a long time, or insufficient air or pressure.
relationship between the three
Under the condition of constant power, when the rotational speed changes, the volume flow and working pressure also change accordingly; for example: a 22KW air compressor, the working pressure is determined to be 7bar at the time of manufacture, and it is calculated according to the technical curve of the compressor host. Speed, the exhaust volume is 3.8 m3/min; when the working pressure is determined to be 8bar, the speed must be reduced (otherwise the drive motor will be overloaded), at this time, the exhaust volume is 3.6 m3/min; Qi also decreases accordingly, and so on.
The power selection is that the power supply capacity can meet the use power of the matched drive motor under the conditions of satisfying the working pressure and volume flow.
Therefore, the steps for selecting an air compressor are: first determine the working pressure, then determine the corresponding volume flow, and finally the power supply capacity.
