Predetermined Standard For
Installation Specification
Air Compressor Classification • Selection Criteria • Technical Guidelines
Air Separation Equipment
Professional installation specifications ensure the safe and efficient operation of air separation equipment. This guideline covers the core selection principles and technical requirements of air compressors, providing a comprehensive reference for engineering implementation.
Air Compressor Series
Classification Methods
There are numerous classification methods for air compressors. By displacement, they are categorized into miniature, small-sized, medium-sized and large-sized air compressors.
By working principle, air compressors are divided into Positive Displacement Air Compressors and Dynamic Air Compressors:
Core Selection Principle
The selected air compressor must meet the requirements of the production process, specifically the discharge pressure, displacement, discharge temperature and air quality.
Key Technical Parameters
Core Selection Standards
01 / Air Compressor Displacement
Actual gas consumption = Equipment gas consumption + Pipeline leakage + Pipeline gas storage capacity.
- With air receiver tank: Q = (1.5~1.8)Qsa
- Without air receiver tank: Q = (1.5~1.8)Qmax
Suggestion: Reserve a 10% margin for displacement matching.
02 / Discharge Pressure
Output pressure should be 20% higher than system max working pressure.
National standard: Pneumatic tools (0.4MPa), Conventional compressors (0.7~0.8MPa).
Warning: For pressure > 0.8MPa, use high-pressure models. Forced pressurization is prohibited.
Purification & Treatment
Compressed Air Post-Treatment
Conventional compressed air contains oil and moisture, requiring purification for high-precision applications.
Oil-free Solution
Oil-free air compressor / Primary & secondary purification devices
Water-free Solution
Install dryer for dehydration treatment
Purification Effect
Oil & moisture content ≤ 5 ppm
Without special temperature requirements, heat-recovery refrigerated air dryers are preferred.