There are several factors to consider when sizing compressor lines to ensure system efficiency, reliability, and cost-effectiveness. Here are some key steps and considerations:

1.Flow Requirement: First, it is necessary to accurately measure the gas demand in the workplace, including the gas consumption of all terminal devices. This will help determine the required pipe diameter to meet the flow requirements.

2.Pressure Drop: The design of the pipeline needs to take into account the pressure drop to ensure that the pressure from the compressor to the point of use meets the equipment requirements. Typically, the recommended pressure drop should not exceed 10% of the compressor's discharge pressure.

3.Pipe Length: The length of the pipe affects the pressure drop and energy consumption. When designing, it is important to minimize the pipe length and the number of elbows to reduce the system's pressure loss.

4.Material Selection: The selection of pipe materials should be determined based on the characteristics of the gas, working environment, and budget. Common materials include carbon steel, stainless steel, and copper, each with different strengths, corrosion resistance, and costs.

5.Safety Factor: To ensure the safe operation of the system, an appropriate safety factor needs to be selected. This can enhance the system's reliability and durability, but it may also increase the system's cost.

6.Air Speed: In the design of compressed air pipelines, air speed is also a crucial factor. The recommended air speed is 6-7m/s to prevent moisture and debris from flowing through drain branches and entering control devices.

7.Pipe Connections: Pipe connections must ensure that the strength, sealing, and anti-corrosion properties are compatible with the pipe material. Connections for drying and purifying compressed air pipes should comply with relevant standards.

8.Heating Compensation Measures: For overhead compressed air pipelines with operating temperatures greater than 100°C, heating compensation measures should be implemented. In cold regions, overhead compressed air pipelines installed outdoors should take anti-freezing measures.

9.Pipe Layout: The pipe layout should consider the distance between the compressor and the points of gas use, as well as the layout of the factory. The ideal solution is to design the compressed air pipeline system as a closed loop around the area of gas consumption.

10.Setting of the Air Receiver: The air receiver can balance pulsation, cool the air, and collect condensate water, thus reducing pressure fluctuations and improving the stability of air supply.

11.Pipe Cleaning and Degreasing: Before installation, the inner walls of the compressed air pipelines, valves, and accessories should undergo cleaning, degreasing, or passivation processes to ensure the cleanliness and absence of contamination in the pipeline system.

By integrating these factors, the appropriate size of the air compressor pipeline for specific application requirements can be determined, thus ensuring an efficient and reliable supply of compressed air.