Model | HD-18D5 | ||
Working pressure: | 8bar | 10bar | 12bar |
Air Delivery (m³/min) | 3 | 2.2 | 2 |
Air Delivery (CFM) | 106 | 78 | 71 |
Motor power | 18.5KW/25HP | ||
Power voltage: | 380V/50hz/3phase (different voltage is available) | ||
Compressor type: | Fixed Speed Rotary Screw Air Compressor | ||
Cooling Mode | Air cooling | ||
Starting mode | Star-delta Start | ||
Ambient temperature | -5℃ ~ +45℃ | ||
Discharge temperature | ≤ Ambient temperature+15℃ | ||
Dimension (mm) | 1380*850*1160 |
Product display: |
Product advantage: |
1. The permanent magnet motor remains high efficiency at low speeds, ensuring Obvious energy-saving advantages in small air volume.
2. Frequency range from 0%-100% (common conversion from 60%-100%).
3. Compared with the fixed speed compressor, energy saving 22%-40%.
4. Compared with the common inverter compressor, energy saving 5%-15%.
5. The larger system volume fluctuations, the more obvious energy-saving effect.
What is the difference between a single-stage screw machine and a double-stage screw machine?
Compressed air is an important source of power in the machinery industry, and air compressors are of various types, each with its own merits. Screw air horsepower compressor are also widely used in various industries, but screw air compressors are also divided into many types, such as single-stage and single-stage compressors. Screw, two-stage single screw, two-stage twin screw, etc.
The single-stage and double-stage air compressors are mainly distinguished from the structure of the host.
Single screw air compressor, a screw air compressor composed of a pair of male and female rotors, realizes air compression with one compression;
The twin-screw air compressor is composed of two pairs of female and male rotors. After the first stage of compression, the gas enters the second stage of horsepower compressor. The compression ratio is high, and the power is one gear lower than that of the first stage compressor.
The compression process is divided into two stages, and the equal pressure ratio is used to set the inter-stage pressure, so the compression ratio of each stage is much lower than the single-stage compression ratio, and the return leakage between the rotors is greatly reduced. The volumetric efficiency and adiabatic efficiency have been greatly improved, correspondingly increased the final gas production.
Advantages of single-stage screw compressor
1. The procurement cost is lower than that of the two-stage screw compressor
2. Simple maintenance, fewer wearing parts of air compressor accessories
3. Large single-stage capacity, no clearance volume
Advantages of two-stage screw compressor
1. Two-stage screw compressor is more energy-efficient than single-stage. Compared with single-stage compression, two-stage compression tends to be the most energy-saving isothermal compression. In principle, two-stage compression saves 5%-8% energy than single-stage compression.
2. The two-stage screw air compressor has low noise, low vibration and high reliability.
3. Two-stage compression reduces the compression ratio of each stage, reduces internal leakage, improves volumetric efficiency, reduces bearing load, and increases the life of the main engine.
Although the initial purchase cost of a two-stage compressor is higher than that of a single-stage screw horsepower compressor, it is more cost-effective to calculate from the overall energy consumption and maintenance.
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