Oil-cooled variable frequency air compressors achieve an optimal balance of energy efficiency, performance, reliability, and cost through precise flow control and efficient cooling design. Consequently, they are the preferred solution for modern enterprises dedicated to highly efficient and sustainable operations.
Product Specifications
| Model No. | SF250+ | Power | 335HP/250KW |
| Voltage | 380V/50HZ | Pressure range | 0.7-0.8Mpa |
| Warranty | 1 year | Air Flow | 45 m³/min |
| Weight | 6050Kg | Noised | ≤80dB |
| Dimension | 4066*2166*2080mm | Cooling Method | Oil-Cooled |
How to choose
Determine gas consumption (flow rate)
Sum total air consumption: Add up the air consumption of all pneumatic equipment (units: m³/min or L/s).
Apply simultaneous use factor: Multiply the total by a factor of 0.6–0.8, as not all equipment will operate at full load simultaneously.
Include safety margin: Add a 10–20% margin to accommodate future expansion and ensure adequate capacity.
Determine work pressure
- Check equipment specifications: Identify the maximum operating pressure required by your pneumatic equipment. Common pressure ratings include 0.7 MPa, 0.8 MPa, 1.0 MPa, and 1.3 MPa.
- Account for pressure drop: Pipeline systems typically cause a pressure loss of 0.05–0.1 MPa. Ensure your selected system pressure compensates for this drop to maintain adequate pressure at the point of use.
Comparison of key performance parameters
Energy Efficiency Indicators
Specific Power (kW/(m³/min))
Select models with lower specific power values for better energy efficiency. For reference, National Level 1 Energy Efficiency requires a specific power of ≤ 7.2.
Variable Frequency vs. Fixed Frequency
Variable Frequency Drive (VFD): Recommended for applications with significant air demand fluctuations, offering 30–40% energy savings through automatic speed adjustment.
Fixed Frequency Drive: Recommended for stable air consumption applications, providing lower initial investment costs.
Cooling Methods
Air Cooling
Designed for easy installation and maintenance. Ideal for small to medium-sized compressors operating in moderate ambient temperatures.
Water Cooling
Engineered for superior heat dissipation and reduced noise levels. Recommended for high-power compressors in high-temperature environments or continuous-duty applications.
Contact Us
8 Gallon Air Compressor is the most cost-effective choice for the vast majority of conventional industrial applications.If you need this product or any similar ones, please contact us for the best quote. We also provide one-stop services for air energy, solutions, and accessories. Please feel free to contact us for any cooperation inquiries or further assistance.
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