1. Compressed air use.
2. Minimum operating pressure.
3. Demand air volume for tip and off-peak. If the difference between the highest and the lowest operating pressure reaches 3bar, the "high and low pressure diversion" must be considered, and then different types of air compressors should be selected according to the changes in the peak and off-peak burdens. For example, the "base load" uses a centrifugal type (single machine > 75CMM) or screw type (single machine <60CMM): "Variable load" uses a high-pressure air machine and a large air storage tank to respond.
4. Different types and grades of dryers and precision filters are selected and configured according to different gas quality. Excessive quality wastes energy, and insufficient quality affects the process, which must be carefully considered.
5. The control technology of air compressors is changing with each passing day, and technologies such as "multi-machine interlocking", "variable frequency shifting" and "remote monitoring" can effectively suppress centrifugal BOV and spiral empty vehicle waste (saving electricity costs by 25-40%), reduce Standby capacity and investment (15-30%), stable air supply pressure (plus or minus 0.1bar).
6. Operating efficiency is not just a comparison of the nominal horsepower and air volume in the catalog, but the actual "performance curve" and "air volume per horse".
7. The installation considers the size of the computer room space, ventilation conditions, noise isolation, waste heat, waste water recovery, etc., all of which affect the use of energy. In addition, "centralized" has lower installation, maintenance and control costs than "distributed", and can also reduce peripheral equipment.
8. As for the cooling methods, there are two kinds of cooling methods: air cooling and water cooling. Air cooling does not require additional investment in cooling tower rainwater, but must have good ventilation: water cooling means that the operating temperature is not affected by the environment, which is beneficial to the life of the air compressor. Disadvantages of bursting and blocking.
9. The power supply planning voltage demand and the stability of the voltage drop must be required. The centrifuge is usually at high voltage and cannot be moved at all. It will cause an impact on the power grid when it is started, and it should be kept in regular operation.
10. The maintenance room must have appropriate maintenance space and necessary lifting facilities and access channels. Engineering personnel and maintenance should also be given different maintenance professional training.
