Air compressor exhaust pressure selection standard

The exhaust pressure selection criteria for air compressors mainly depend on the specific application scenario and requirements. Here are some key selection criteria and considerations: 1. Determine the required working pressure

1. The working pressure of pneumatic tools and equipment:

   • Pneumatic tools (such as pneumatic wrenches, pneumatic drills, etc.) and pneumatic equipment (such as pneumatic valves, pneumatic cylinders, etc.) usually have their designed working pressure range. When choosing an air compressor, you should ensure that the exhaust pressure of the compressor can meet the working pressure requirements of these equipment and leave a certain margin.

2. System pressure drop and loss:

   • When determining the required operating pressure, the pressure drop and loss of compressed air during delivery also needs to be considered. This includes pipe friction loss, pressure loss caused by accessories such as elbows, valves, and pressure requirements for gas-using equipment.

2. Choose the appropriate exhaust pressure

1. General-purpose aerodynamic compressors:

   • According to national standards, the exhaust pressure of aerodynamic compressors for general purpose is usually 0.7MPa (7 atmospheres), and the old standard is 0.8MPa (8 atmospheres). This pressure range can meet the needs of most pneumatic tools and equipment.

2. Special application requirements:

   • If the application scenarios have higher requirements on the pressure of compressed air, such as the aerospace industry, high-pressure spraying and other fields, it may be necessary to choose a compressor with higher exhaust pressure.
   • For some low-pressure applications, such as some laboratory equipment, pneumatic instruments, etc., compressors with lower exhaust pressure can be selected.

3. Leave pressure margin:

   • When selecting the exhaust pressure of the compressor, it is recommended to leave a pressure margin of 10% to 20% to deal with system pressure fluctuations and unexpected situations.

3. Consider other factors

1. Exhaust volume matching:

   • In addition to exhaust pressure, it is also necessary to ensure that the exhaust volume of the compressor matches the requirements of the gas system. Too small air exhaust will cause the gas-using equipment to not work properly, and too large air exhaust will cause energy waste.

2. Operating efficiency and economy:

   • Selecting the right exhaust pressure can improve the operating efficiency of the compressor and reduce energy consumption and operating costs.
   • At the same time, the maintenance cost and service life of the compressor should also be considered.

3. Installation and use environment:

   • Installation and use environment of compressorIt is also an important factor that needs to be considered when selecting a model. For example, if the installation space is limited, a compressor with a compact structure should be selected; if the ambient temperature is high, a compressor with good heat dissipation performance should be selected.

4. Summary

The exhaust pressure selection criteria for air compressors should be determined based on specific application scenarios and requirements. When choosing, factors such as the working pressure of the pneumatic tools and equipment, system pressure drop and loss, exhaust volume matching, operating efficiency and economy, installation and use environment should be comprehensively considered. Through reasonable selection, it can be ensured that the compressor meets the needs of the gas system and improves working efficiency and economic benefits.