A Comprehensive Guide to Buying an Air Compressor
When choosing an air compressors, it is important to take the follow factors into consideration:
1. Type of the air compressors. It is recommended to choose the air compressor type according to the user’s needs for air pressure and air flow, mechanical performance (low vibration, low noise) and adaptability under variable conditions.
2. Economic operation of the air compressor system, which include the single electricity consumption (kwh/km3) or steam consumption (t/km3) of the air compressor, the quality and water consumption (t/km3) of the cooling water required by the air compressor, and the heat energy benefit of the air compressor; in addition, selecting the appropriate technical parameters (exhaust volume, exhaust pressure) of the air compressor is the premise of whether the air compressor can meet the production requirements and whether it can run economically;
3. Installation and maintenance cost. It is suggested to choose an air compressor with simple installation and low maintenance cost.
The selection of air compressor should be based on the following procedures:
1. Investigate the user’s requirements (the air pressure, air flow, air temperature, air humidity required to be reached by the user);
2. Calculate the resistance between the air compressor outlet and the user point;
3. Determine the rated exhaust pressure (the rated exhaust pressure of the unit can be taken as 1.1 times of the theoretical data according to the actual calculation), exhaust volume, exhaust temperature after the air compressor is treated by the post-treatment device;
4. Select the appropriate electric control and self-control system according to the automatic operation requirements of the unit;
5. Draft the technical requirements of the air compressor for the preparation of procurement;
6. Carry out field investigations of the air compressor manufacturers and users to understand the production level and production capacity of the manufacturers, and to understand the real feedback of the air compressor users in depth;
7. Carry out bidding procurement for the air compressor, formulate reasonable scoring criteria and select the air compressor with the highest cost performance through bidding;
8. After the equipment contract is signed, face to face technical document docking should be conducted with the air compressor supplier to form the air compressor technical agreement as an annex to the contract.
