What is the meaning of air compressor displacement

The air compressor exhaust volume refers to the volume of air output from the exhaust end after the compressor is sucked and compressed from the intake end per unit time. It is an important technical parameter to measure the air supply capacity of the air compressor, usually in cubic meters per minute (m & sup3;/min) or cubic meters per hour (m & sup3;/h).

Core definition of 1. displacement

1. reference value under standard conditions
   exhaust volume labels are usually based on standard atmospheric conditions (temperature 20°C, pressure 101.3kPa, relative humidity 0%). For example, a nominal displacement of 5m & sup3;/min of the air compressor, said in the standard conditions can be output per minute 5 cubic meters of compressed air.

2. Correction of actual working condition
   in actual use, changes in ambient temperature, altitude or intake pressure will affect the exhaust volume. For example:

   • high temperature environment: The air density decreases, and the air quality decreases under the same volume, resulting in a decrease in the actual exhaust volume;
   • high altitude area: The atmospheric pressure decreases, the intake air volume decreases, and the exhaust volume decreases accordingly.
     Granklin air compressor through the intelligent control system, can automatically compensate for environmental changes, to ensure stable output gas.

Influence of 2. Displacement on Air Compressor Performance

1. direct manifestation of gas supply capacity
   the displacement determines whether the air compressor can meet the needs of gas equipment. For example:
   • pneumatic tools: Spray gun, pneumatic pick and other tools need continuous and stable air flow, insufficient exhaust volume will lead to insufficient tool power;
   • automated production line: When multiple pneumatic components work at the same time, it is necessary to ensure that the total exhaust volume covers the instantaneous air consumption of all equipment.
2. Key Indicators of Energy Consumption and Efficiency
   • matching gas demand when the exhaust volume matches the air consumption of the equipment, the air compressor can operate efficiently. If the exhaust volume is too large, it will lead to "big horse-drawn trolley" and cause energy waste. If the exhaust volume is insufficient, the air compressor will need to run at high load for a long time to increase energy consumption.
   • Granklin Technical Advantage: Through the high-efficiency compression design of single screw plus star wheel, gas leakage is reduced, volumetric efficiency is improved, more compressed air is output under the same power, and energy saving is 15%-20%.
3. Equipment life and maintenance costs
   long-term overload operation (actual gas consumption> displacement) will accelerate the wear of the air compressor and shorten the life of key components such as the main engine and bearings. Granklin air compressor adopts high-strength stainless steel main engine and wear-resistant star wheel, which can withstand high load operation. At the same time, the oil-free design reduces the risk of failure such as oil circuit blockage and reduces maintenance costs.

Matching of 3. Exhaust Volume and Gas Consumption Scenario

1. intermittent Gas Scenario
   such as car repair shop, pneumatic wrench, lifting machine and other equipment non-continuous use, can choose the displacement slightly less than the peak air consumption of the air compressor, and configure the gas storage tank buffer gas fluctuation. Granklin air compressor has a fast start-up response and can quickly replenish the pressure of the gas tank.

2. Continuous gas usage scenario
   such as textile mills, chemical plants, the need for air compressor 24 hours a stable gas supply. It is recommended to choose a model with a displacement slightly greater than the average gas consumption, and equipped with a frequency conversion control system to automatically adjust the speed according to the gas consumption to achieve a balance between energy saving and stable gas supply.

3. Clean gas demand scenario
   such as food packaging, pharmaceutical manufacturing and other industries, the need for compressed air oil content is zero. Granklin air compressor with water instead of lubricating oil, the exhaust does not contain oil, to avoid oil pollution products or plug the valve, at the same time, the exhaust volume is stable, to ensure the continuity of production.

4. User FAQs

1. possible causes of reduced displacement
   • air intake filter element clogged: The air intake is reduced, and the filter element needs to be cleaned or replaced regularly;
   • cooling system fault: If the temperature of the main engine is too high, the protection shutdown will be caused, and the cooler or cooling water flow rate shall be checked;
   • aging of seals: Gas leakage causes the exhaust volume to decrease, and the sealing ring needs to be replaced or the main engine needs to be repaired.
2. How to choose the right exhaust volume
   • statistical gas equipment: Calculate the instantaneous maximum air consumption of all equipment, and consider pipeline loss (usually increase by 10%-15% margin);
   • consulting Professional Engineer grantklin provides free gas evaluation service and recommends models according to production scale and gas usage habits;
   • reference Industry Cases: For example, an electronic factory chooses 8m & sup3;/min air compressor to meet the gas demand of 20 pneumatic screwdrivers and 3 inkjet printers.
3. Relationship between displacement and pressure
   exhaust volume (volume flow) and exhaust pressure (in bar or MPa) need to be considered simultaneously. For example, the same air compressor will have a lower displacement at 8bar than at 7bar.