الفقد في منظومة الانابيب.docx

Losses the minor and the major losses with together

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losses (the minor and the major losses with together), one should use: 4 The apparatus of the experiment Cussons P5160 Friction Loss in Pipes apparatus allows the student to study flow through pipes and fittings, investigate the relationship between flow and pressure drop and plot values of friction factor against Reynold’s number. The apparatus consists of a set of parallel pipes manifolded and valved so that a wide variation of flow circuits can be produced. Pressure tappings are provided at appropriate points so that measurements can be made of head loss over standard lengths of differing pipework, and various types of fittings as required. The first pipe which acts as a feed pipe to the four manifolded pipes, contains a variable area flow meter, a transparent venturi tube, an orifice plate assembly and an annular test section. Means are available to vary the rate of flow over a wide range. The second and third pipes of 25 and 12mm bore respectively are each divided into smooth and artificially roughened sections. The fourth pipe is of small bore and contains a ball- valve, a filter fitting and a gate valve . The final pipe contains a transparent portion of enlarged cross section which allows a study of sudden enlargements and contractionsto be made as well sa affording a test section to house a pitot tube assembly. The enlarged section is followed by a series of four slow bends, a series of four elbows and an angled seat valve. 5 SETUP DESCRIPTION The set-up is designed to demonstrate the head losses in pipes. The apparatus enables the following instruction capabilities: Major and Minor head loss through rough pipe with 12.7mm diameter.
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