How to Select Air Compressor Types, Let me Help you!_Suzhou Chanun Compressor Co., Ltd.

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How to Select Air Compressor Types, Let me Help you!

Release time:

2025-08-29

How to Select Air Compressor Selection Types, Let me Help you!

CHANUN air compressor

Oil-Injected vs. Oil-Free

Oil-Injected Screw Compressors: Suitable for general manufacturing industries (e.g., textiles, building materials). Lubrication seals and cools the system, offering lower costs but producing compressed air containing oil.

Oil-Free Screw Compressors: Mandatory for industries such as food, pharmaceuticals, and electronics. Rotors use self-lubricating materials (e.g., PTFE) to ensure 100% oil-free air, preventing contamination.

Cooling Methods

Air-Cooled: Account for over 90% of small compressors! No water source required, easy maintenance, and avoids risks like freezing and corrosion associated with water-cooled systems.

Water-Cooled: Limited to scenarios with a stable water supply. Higher long-term costs due to the need for water circulation systems and regular descaling.

Specialized Models for Specific Scenarios

Portable Compressors: Ideal for long-distance mobile operations such as mining and construction sites.

Diesel-Powered Compressors: Emergency solutions for environments without grid power.

Vertical Compact Models: Designed for confined spaces like ships and vehicles.

Quality and Energy Efficiency

Compressed Air Quality Upgrade**: Post-treatment equipment is essential.

- For oil- and water-free applications: Dryers and multi-stage filters must be installed (reducing oil and water content to <5 ppm).

- Post-treatment combination: Air receiver → refrigerated dryer → precision filter (typical process: compressor → air receiver → filter → dryer).

Energy Efficiency is Key

- Motor selection: Choose IE3 or higher efficiency ratings. Variable frequency drive (VFD) technology can save up to 25% electricity (automatically adjusts speed based on air demand).

Safety and Maintenance

- Dual safety mechanism: Must include "safety valve + pressure regulator" to automatically unload during overpressure situations.

- Maintenance costs: Opt for models with high rotor precision (e.g., CNC-machined alloy steel rotors) and low lubricant consumption (reducing oil change frequency).