What is the purpose and standard of identifying and numbering ventilation ducts?

The identification and numbering of ventilation ducts play an important role. During the construction process, clear identification and numbering facilitate construction personnel to accurately identify the type, direction, and connection relationship of pipelines, avoid installation errors, and improve construction efficiency and quality. For example, ventilation ducts with different functions, such as supply ducts, exhaust ducts, fresh air ducts, etc., can be clearly identified through labeling to prevent confusion during installation.

During the system operation and maintenance phase, identification and numbering help to quickly locate faulty pipelines. When there is a problem with the ventilation system, maintenance personnel can quickly find the corresponding pipeline for inspection and maintenance based on the identification and number, shorten the troubleshooting time, and reduce the impact on the normal operation of the system. At the same time, targeted maintenance work such as pipeline cleaning and maintenance can also be carried out based on identification and numbering.

Regarding the specifications for identification and numbering, it is generally required that the identification should be clear, conspicuous, and durable. The identification content should include key information such as pipeline name, medium flow direction, pipe diameter, system number, etc. The pipeline name should accurately reflect the function of the pipeline, such as "air conditioning fresh air duct", "kitchen exhaust pipe", etc. The flow direction identification of the medium should be in the form of arrows, clearly indicating the flow direction of air or other media in the pipeline. The diameter marking should indicate the nominal diameter or actual size of the pipeline. The system number is used to distinguish different ventilation systems for easy management and maintenance.

The color of the identification also has certain standards. Usually, pipes with different functions are marked with different colors, such as blue representing air conditioning supply ducts, green representing fresh air ducts, red representing fire exhaust ducts, etc., in order to distinguish them intuitively. The identification and numbering should be placed in prominent positions on the pipeline, such as the starting end, turning point, branching point, and every certain distance of straight pipe section, to ensure easy identification in any situation.