Method of determining the friction pressure loss in a circular pipeline of constant cross-section

The  procedure   for  determining  friction   pressure   losses  in  the  copper  pipeline of constant round section is presented. A description of the laboratory installation and the list of measuring instruments required for its implementation according  to the proposed  algorithm are given.  The  main stages of experimental work include: air supply to the pipeline by centrifugal fan; determination of pipeline geometrical parameters; measurement  of the  air  temperature in  the  room  with  a thermohygrometer, the speed of air movement at the outlet of the pipeline with a thermoanemometer, air pressure drops (losses) in the sections of the rectilinear pipeline  with  a differential pressure  gauge. Based  on experimental data, friction head losses were determined on the investigated section of the pipeline with subsequent assessment of the  error of indirect measurements. The  results  were compared with  theoretical data  (nomograms by I.I. Nikuradze), confirming their reliability and the convergence of the results  was assessed.  Knowledge of such engineering, technical and scientific solutions will make it possible to perform high-quality control of losses  and  pressure  drops  in  pipelines, select  the  necessary  hydraulic equipment (superchargers), and avoid emergencies  during operation of engineering life support systems.

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