The working pressure range of low pressure air compressor is generally 0.2-1.0MPa(2-10bar) the specific pressure depends on the application scenario and equipment design. Here is the detailed description:
1. pressure range analysis
- standard Definitions:
- low-pressure air compressor refers to the exhaust pressure ≤ 0.5MPa, but in practical application, the pressure range of most low-pressure air compressors is 0.4-0.8MPa.
- For example, some textile and foam industries may require lower pressure (0.2-0.5MPa) through frequency conversion control or pressure reducing valve adjustment.
- Comparison with conventional air compressor:
- the pressure of ordinary air compressors is usually 0.7-0.8MPa, while low-pressure air compressors provide a more economical low-pressure solution by optimizing the compression ratio and motor control.
2. typical application scenarios
| Industry | pressure demand | specific uses |
|---|
| textile | 0.4-0.6MPa | fiber conveying, rubber roller pressure, jet air processing |
| food Processing | 0.5-0.8MPa | drying equipment, packaging machinery power source |
| cement/Glass | 0.4-0.6MPa | mixing equipment, molding process assistance |
| environmental protection equipment | 0.3-0.5MPa | sewage treatment aeration, dust collection |
advantages of 3. low pressure air compressor
- cost-effectiveness:
- the price of the equipment is 30%-50% lower than that of the high-voltage model, and the energy consumption is reduced (no secondary compression is required).
- Case: After a foam factory switched to a 0.4MPa low press, the annual electricity saving was about 120000 yuan.
- Convenient maintenance:
- the structure is simple, the failure rate is low, and the lubricating oil replacement cycle is extended to 1.5 times that of ordinary machines.
- Environmental protection and energy saving:
- using permanent magnet frequency conversion technology, the power is reduced to less than 30% when no-load, and the noise is reduced by 5-8dB.
4. selection recommendations
- pressure matching:
- it is preferred to select models with rated pressure 0.1-0.2MPa higher than the demand (for example, 0.5MPa, 0.6MPa model is selected) to avoid frequent loading.
- flow calculation:
- according to the actual gas consumption x 1.2 coefficient selection, to ensure peak demand.
- Environment adaptation:
- high temperature/high humidity environment need to choose water cooling model, dust environment need to install precision filter.
Through the reasonable selection of low-pressure air compressor, enterprises can significantly reduce energy consumption and maintenance costs while ensuring production demand, and improve overall operational efficiency.
