Oil and waterless air compressor index

Analysis of core indicators of oil-free and water-free air compressors

As a high-end compressed air equipment, oil-free and waterless air compressor has its technical indicators directly related to the cleanliness of the output air, equipment operating efficiency and long-term reliability. The following is a systematic explanation of its core performance parameters and design requirements from a professional perspective and combined with industry general standards.

1. Compressed air quality indicators

1. Oil content control
   Oil-free air compressors use oil-free lubrication technology (such as water lubrication, ceramic bearings or permanent magnet synchronous motor drive) to ensure that the oil content in the discharged air is less than 0.01mg/m³, meeting the requirements for air cleanliness in precision manufacturing, medicine and food, etc. Scenes with extremely high requirements.

2. Water content purification

   • dew point temperature: Control the dew point temperature of the compressed air within the range of-20℃ to-40℃ through a freeze dryer or adsorption dryer to ensure that the residual moisture content is less than 0.01g/m³.
   • gas-water separation efficiency: Adopt dual technologies of centrifugal separation and filter element filtration to achieve a gas-water separation efficiency of more than 99.9%, avoiding moisture corrosion to equipment and products.

3. Particle filtration accuracy
   Configure a multi-stage filtration system (including pre-filtration, fine filtration and terminal filtration) to achieve a filtration accuracy of 0.01μm, ensure that the number of discharged air particulate matter is less than 1000/m³, and meet the ISO 8573-1 cleanliness level requirements.

2. Equipment performance parameters

1. Exhaust volume and pressure
   • exhaust volume: According to gas demand, it provides a displacement range of 0.1-100m³/min, covering diverse scenarios such as laboratories and industrial production lines.
   • exhaust pressure: Support a pressure adjustment range of 0.5-1.3MPa, and achieve precise pressure regulation and stable output through an intelligent control system.
2. Energy Efficiency Ratio (EER)
   Using permanent magnet frequency conversion technology or high-efficiency screw main machine, the energy efficiency ratio (EER) reaches the national first-class energy efficiency standard (EER≥5.5), which saves energy by 20%-30% compared with traditional air compressors.

3. Operational stability and reliability

1. Core component life
   • host: Adopt high-precision screw rotors and low-friction bearings, and the design life exceeds 80,000 hours.
   • motor: Equipped with IP55 protection class motors, suitable for wide temperature range operation from-20℃ to 40℃, and the insulation level reaches Class F.
2. intelligent control system
   • pressure regulating: Closed-loop control of pressure is realized through PID algorithm, and the pressure fluctuation range is controlled within ±0.01MPa.
   • fault early warning: Integrate vibration monitoring, temperature sensing and other modules to provide 24 hours in advance warning of bearing wear, abnormal oil temperature and other faults.
3. maintenance cycle
   • filter replacement: Pre-filter elements are replaced every 2000 hours, fine filter elements are replaced every 4000 hours, and terminal filter elements are replaced every 8000 hours.
   • Main engine maintenance: The main engine is overhauled every 20,000 hours, including rotor clearance adjustment and bearing replacement.

4. Environmentally adaptable design

1. noise control
   • noise reduction technology: Adopt fully enclosed soundproof enclosures and low-noise fans, and the operating noise of the equipment is less than 65dB (A), meeting indoor installation requirements.
   • vibration suppression: Through elastic damping base and dynamic balance correction, the vibration amplitude of the equipment is controlled within 0.05mm.
2. protection grade
   • electrical protection: The control cabinet reaches IP54 protection level and is suitable for humid and dusty environments.
   • embalmed: Anodized or nickel plated parts in contact with compressed air, and withstand salt spray test for more than 96 hours.

5. Safety and compliance

1. safety standards
   • pressure vessel: The air storage tank complies with the Safety Technical Supervision Regulations for Fixed Pressure Vessels (TSG21), and the design pressure is 30% higher than the rated working pressure.
   • electrical safety: Passed CE certification, equipped with leakage protection, overload protection and emergency shutdown functions.
2. environmental performance
   • emission control: Meet the “Comprehensive Emission Standard for Air Pollutants”(GB16297), and the particulate matter emission concentration is less than 30mg/m³.
   • energy efficiency label: Obtained first-level certification of China’s energy efficiency label, and its carbon emission factor is less than 0.5kgCO ˇ/m³.

conclusion

The technical indicator system of oil-free and water-free air compressors covers five dimensions: air quality, equipment performance, operating stability, environmental adaptability and safety compliance. Through oil-free lubrication technology, multi-stage purification system and intelligent control technology, the equipment can output clean compressed air that meets ISO 8573-1 standards, while achieving high efficiency, energy conservation and long-term reliable operation. When selecting models, companies need to comprehensively evaluate exhaust volume, pressure, energy efficiency and maintenance costs based on specific application scenarios to select the best solution.