When buying air compressor, in addition to the purchase cost, how to reduce the cost of electricity?How to extend the service life of air compressor?How to provide smooth air pressure?And how to reduce noise pollution?All are concerned by the user, how to choose the right air compressor in the early stage of purchase plays a key factor.The following 10 points must be known when choosing an air compressor:
1. Use of compressed air
2. Minimum operating pressure and the amount of compressed air required per minute
3, tip and off peak demand air volume.If the difference between the highest and lowest operating pressure reaches 3bar, the "high and low pressure shunt" must be considered, and then according to the peak and off-peak load changes to choose different types of air compressor, such as "base load" using centrifugal (single >75CMM) or spiral (single <60CMM) : "variable load" using high-pressure air machine and large gas storage bucket to cooperate.
4, according to different gas quality selection and configuration of different forms and grades of dryer and precision filter, too good quality waste energy, insufficient quality affect the process, must be carefully considered.
5, air compressor control technology changes with each passing day, "multi-machine linkage", "frequency conversion variable speed" and "remote monitoring" and other technologies, can effectively inhibit centrifugal BOV and spiral no-load waste (save 25-40% of electricity), reduce standby capacity and investment (15-30%), stable gas supply pressure (plus or minus 0.1bar).
6, operating efficiency can not only compare the nominal horsepower and air volume on the catalog, the focus is the actual "performance curve" and "air volume per horsepower".
7. Considering the size of the machine room space, ventilation conditions, noise isolation, waste heat, waste water recovery, etc., all lead to the use of energy.In addition, centralized systems have lower installation, maintenance and control costs than distributed systems, and can also reduce peripherals.
8. As for cooling methods, there are two kinds: air cooling and water cooling. Air cooling does not require additional investment in cooling tower rainwater, but must have good ventilation.
9. The stability of voltage demand and voltage drop of power supply planning must be required. The centrifuge is usually of high voltage and cannot be moved at all.
10, the maintenance room should have appropriate maintenance space and necessary lifting facilities and access, engineering personnel and maintenance should also carry out different maintenance professional training.