What are pipes used for?

A pipeline is a system of pipes, pipe fittings, and valves used to transport gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure areas to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of applications, primarily in water supply, drainage, heating, gas supply, long-distance transport of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations.

Determining the Pipe Diameter: When the fluid flow rate is known, the pipe diameter depends on the allowable flow velocity or the allowable frictional resistance (pressure drop). Higher flow velocities require smaller pipe diameters, but this increases the pressure drop. Therefore, higher flow velocities can save on pipeline infrastructure investment, but increase the energy costs of pumps and compressors. Furthermore, excessively high flow velocities may introduce other adverse factors. Therefore, the pipe diameter should be determined based on a comprehensive consideration of construction investment, operating costs, and other technical factors.