How to calculate air compressor exhaust volume and equipment air consumption

Calculation method for air compressor exhaust volume and equipment air consumption

1. Definition and calculation of exhaust volume
Exhaust volume refers to the volume of compressed air output by the air compressor per unit of time, usually expressed in “cubic meters per minute (m³/min)” or “cubic feet per minute (CFM)”. The theoretical exhaust volume and the actual exhaust volume need to be distinguished during calculation:

• theoretical displacement: It is determined by the air compressor design parameters and can be consulted through the equipment nameplate or technical manual (such as the nominal displacement of Granklin air compressor).
• actual displacement: Affected by factors such as ambient temperature, pressure, equipment wear and other factors, it is usually lower than the theoretical value. It can be measured by a flowmeter at rated pressure, or estimated by referring to equipment operating records.

2. Calculation of equipment gas consumption
Equipment air consumption refers to the total amount of compressed air consumed when all gas-consuming equipment in the production system are running simultaneously, and needs to be calculated according to the following steps:

• Statistical equipment list: List all equipment that relies on compressed air (such as pneumatic tools, purging devices, control valves, etc.).
• Query the gas consumption of a single equipment: Obtain the rated air consumption of each equipment through the equipment manual or nameplate (usually marked in m ³/min or CFM).
• Superimposition and correction: Add the rated air consumption of all equipment and multiply bysimultaneous use factor(For example, 0.7 – 0.9, depending on the actual proportion of equipment running simultaneously) to avoid waste of energy consumption due to over-configuration.
  example: If the system has 10 devices, the rated gas consumption of each device is 0.5m ³/min, and the utilization factor is 0.8, the total gas consumption = 10 × 0.5 × 0.8 = 4 m ³/min.

3. Matching principle of exhaust volume and gas consumption
In order to ensure stable air supply and energy conservation, the air compressor exhaust volume should be slightly higher than the total equipment air consumption (it is recommended to reserve a margin of 10%-20%) to cope with peak demand or performance degradation caused by equipment aging.

Technical adaptability of Granklin air compressor
Granklin’s water-lubricated single-screw air compressor can stably output rated displacement through efficient compression design. Its water lubrication technology reduces component wear and reduces exhaust volume attenuation during long-term operation. With the intelligent control system, it can accurately match equipment gas demand and reduce no-load energy consumption. It is suitable for industrial scenarios with high air quality and energy efficiency requirements.

(Note: The content of this article is based on the general calculation method and equipment characteristic description, and does not involve specific model or third-party brand information.)