First, we ought to consider the exhaust pressure and the volume of the exhaust.
Based on the national standard, the exhaust pressure of general purpose surroundings compressor is 0.7 MPa (7 atmospheric pressure) and the old regular is 0.8 MPa (8 atmospheric pressure). Because the design functioning pressure of pneumatic tools and wind machinery is usually 0.4 Mpa, the functioning pressure of surroundings compressor can fully meet the requirements. If the air flow compressor used by the consumer is larger than 0.8MPa, it must be specially manufactured. The technique of forced pressurization can not be adopted to avoid accidents.
The size of the exhaust is also one of the main parameters of the air compressor. Choosing the atmosphere volume of the air compressor should match its own exhaust volume and leave a 10% margin. If the atmosphere volume is huge and the air compressor exhaust volume is little, when the pneumatic equipment begin, the exhaust pressure of the surroundings compressor will be greatly reduced, however the pneumatic tools can’t be driven. Of training course, additionally it is wrong to pursue large exhaust capacity blindly, because the bigger the exhaust capability, the larger the engine allocated by the surroundings compressor, not merely the higher the price, but also a waste materials of buying funds, and the use of energy and energy will end up being wasted.
Consider the mixture of gas fields and conditions.
If the utilization of air space is narrow, it should be vertical; if there is a long-distance switch in the use of air (a lot more than 500 m), mobile type is highly recommended; if the use of electricity can’t be used, diesel engine traveling type should be selected; when there is simply no circulating drinking water in the use of occasions, air-cooled type ought to be selected. In the air-cooled and water-cooled cooling settings, many users have an incorrect idea that water-cooled is great, but in fact it is not. The air-cooled type accounts for a lot more than 90% of the tiny compressors at home and abroad. That is because the air-cooled type is easy in design and no water source is necessary used. There are four fatal shortcomings of water-cooled compressor: it will need to have a complete higher and lower water program with large expenditure; water-cooled cooler has brief life; it is easy to freeze the cylinder in wintertime in the north; it’ll waste a lot of water in normal operation.
Then consider the compressed quality of air.
Generally, compressed air made by air compressor contains a specific amount of lubricating oil and water. In some cases, it really is prohibited from essential oil and water. At this time, attention should be paid not merely to selecting compressor, but also to the addition of auxiliary devices when necessary.
Lastly, it is to expand the knowledge of reference.
1. Balance: With the solid rise of China’s overall economy and the continuous emancipation of the thoughts of all sorts of manufacturers, manufacturers from coast to coast are busy with creation work. In the process of production, atmosphere compressors, which play an essential role, are often completely loaded and operate all-weather. In the entire production of factories, surroundings compressor gas production can be unstable, which is a very troublesome thing, often provides incalculable losses. Therefore, when we purchase air compressors, the initial criterion may be the stability of air compressors. At the moment, some high-end brands both in the home and overseas can meet this requirement. With the mature technology of adjustable frequency surroundings compressor, it could be thought to meet this requirement.
2. Gas production: The second is gas production. Some enterprises have very high quality of gas. For example, in the pharmaceutical market, basically the gas they need is oil-free. In this respect, it is still predicated on the enterprise’s personal situation. If the enterprise includes a high demand 
for this, then it has been a long time to purchase more well-known machines. If the demand isn’t high, it depends upon other situations. As the future development pattern of the atmosphere compressor industry, the adjustable frequency air compressor continues to be very excellent in gas production, because the variable frequency air compressor has a prominent characteristic of monitoring gas creation, and at the same time the gas quality China Vacuum Pumps produced is very considerable.
3. Power consumption: This is a relatively important place and also the focus of discussion, because surroundings compressor, as a simple equipment, is generally managed all-weather, and air flow compressor itself is an extremely power-consuming equipment, the overall manufacturer of surroundings compressor power consumption accounts for 20-30% of the total plant power intake. If effective control, the effect is very apparent. Many domestic enterprises are actually pursuing the base price. In fact, the bottom price is quite one-sided. For general production enterprises, the purchase price of surroundings compressor only accounts for 5% of the total cost of air compressor, 9% of the maintenance and labor costs, and 86% of the total cost of power. Therefore, considering the last expenditure, the frequency conversion air compressor should be much lower compared to the ordinary air compressor. Frequency conversion atmosphere compressor is only the first expenditure, but invest the the electricity cost into account, you can really calculate a bill. Nowadays, the overall energy-saving amount of frequency converter air flow compressor is quite objective, and the domestic professional frequency converter atmosphere compressor, its power-saving price is really as high as 30%, usually within 
a calendar year can recover the difference. Therefore, whenever choosing air compressor, choosing an excellent variable frequency atmosphere compressor is really the very best solution to the issue of power consumption.