Fleetstock Academy
Modern Industrial Technologies Series
Topic No. 0006
Methodology for Calculating Compressed Gases in Production Processes
Prepared by: Fleetstock Engineers
Published by: Fleetstock Academy
Version: 1.0
Preface
The increasing level of automation of production processes in modern industrial enterprises has further increased the importance of compressed gas systems. In particular, compressed air is widely used as one of the main energy sources in pneumatic control systems, automatic production lines, sensor and actuator mechanisms. Therefore, the correct calculation of compressed gas requirements is considered one of the important technical issues in terms of the continuity of the production process, technological stability and effective operation of equipment.
For the correct design and operation of a compressed gas system in production processes, a complex methodological approach is required, including calculating gas consumption, assessing the efficiency of the compressor system, determining pressure losses and analyzing real monitoring indicators. This methodology not only increases the reliability of automated production systems, but also creates conditions for ensuring energy efficiency.
Goals and objectives
Goal
To study the methodology for calculating the compliance of the compressed gas system used in production processes with technological requirements and analyze its application with an automated system.
Tasks
Investigation of the role of the compressed gas system in production processes;
Determination of the gas demand of pneumatic equipment;
Assessment of the efficiency of the compressor system;
Calculation of pressure losses;
Analysis of gas quality indicators;
Study of real monitoring and automated control systems.
1. The role of the compressed gas system in production
Compressed gas, especially compressed air, plays a key role in the operation of pneumatic systems in production processes. In an automated production environment, pneumatic systems are integrated with mechanical and electrical systems to provide automatic control of technological processes.
Compressed gas is applied in the following systems:
Pneumatic cylinders;
Pneumatic valves;
Automatic control mechanisms;
Conveyor systems;
Packaging and assembly lines.
For the stable operation of these systems, it is important to provide gas at a constant pressure and in the required volume.
2. Methodology for calculating compressed gas demand
The main stage in calculating the compliance of compressed gases with the demand is to determine the total gas consumption of production equipment. Based on the technical characteristics of each pneumatic device, its air consumption is determined and the total system demand is calculated.
The total gas consumption is calculated by the following formula:
Q = q₁ + q₂ + q₃ + … + qₙ
Where:
Q — total gas consumption;
qₙ — gas consumption of each equipment;
n — number of equipment.
In practical calculations, a safety factor is applied to increase the reliability of the system:
Total = Q × (1.1–1.3)
This approach ensures stable operation of the system during peak loads.
3. Evaluation of compressor system performance
The compressor unit is the main technical element of the compressed gas system. The compressor capacity must fully cover the gas volume required in the production process.
Compliance is assessed based on the following condition:
Compressor capacity ≥ Total gas demand
Insufficient compressor capacity can cause the following problems:
Poor operation of pneumatic systems;
Pressure drop;
Delays in automated processes;
Production stoppage.
Therefore, the technical parameters of the compressor should be analyzed regularly.
4. Calculation of pressure indicators and losses
Pressure stability is one of the main technical conditions for the correct operation of pneumatic systems. In production processes, a working pressure of 6–8 bar is usually required.
The real system pressure is determined by the following formula:
P_real = P_source – P_loss
Pressure losses depend on the following factors:
Length and diameter of pipelines;
Filter and drying devices;
Distribution network;
Leaks in the system.
Correct calculation of pressure losses is of great importance for the efficient operation of the system.
5. Evaluation of compressed gas quality indicators
The quality of compressed gas directly affects the reliability of automated production systems. Quality indicators include the following:
Humidity level;
Oil content;
Temperature;
Mechanical contamination level.
Humid and dirty air can cause malfunctions of pneumatic valves and actuators, as well as reduce the service life of the system. For this reason, the use of filtration and drying systems is considered essential.
6. Real monitoring and automated control
In modern production facilities, the operation of compressed gas systems is monitored through automated control. The monitoring process is carried out using the following technical means:
Pressure sensors;
Flow measuring devices;
PLC control systems;
Automated monitoring programs.
The collected data is analyzed to assess gas consumption, pressure, and system stability. This approach allows for timely detection of technical malfunctions and optimization of the production process.
7. Energy efficiency analysis
Correct calculation of compressed gas systems has a significant impact on increasing energy efficiency. Energy consumption is estimated based on the following indicators:
E = N × t
Where:
E — energy consumption (kWh);
N — compressor power (kW);
t — operating time (hours).
To increase energy efficiency, it is important to select the optimal pressure regime, eliminate leaks in the system, and implement automatic control systems.
Conclusion
The methodology for calculating the compliance of compressed gases with the requirements in production processes is based on determining the gas consumption of production equipment, assessing compressor efficiency, calculating pressure losses, analyzing gas quality indicators, and comparing real monitoring data. As a result of the calculations, stable and efficient operation of pneumatic systems is ensured, energy losses are minimized, and the continuity of automated production processes is maintained.
The application of this methodology creates ample opportunities for optimizing production processes, increasing technological reliability, and effective management of modern automated systems.
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