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Topic :. Horizontal Venturi Meter. OBJECTIVES. At the end of the session, student should be able to : Sketch, label and describe fluid motion mechanism in the horizontal venturi meter. List 5 advantages of horizontal venturi meter. The application of venturi meter in industries.

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  1. Topic : Horizontal Venturi Meter

  2. OBJECTIVES At the end of the session, student should be able to : • Sketch, label and describe fluid motion mechanism in the horizontal venturi meter. • List 5 advantages of horizontal venturi meter. • The application of venturi meter in industries.

  3. VENTURI HORIZONTAL METER - a device used for measuring the rate of flow Converging Cone 21o Throat =x Entry Exit 1 2 A1 V1 P1 A2 V2 P2 Diverging Angle 5-7o

  4. MECHANISM OF VENTURI METER • The Fluid is accelerated through a converging cone of angle 21o. • Pressure are taken at the entrance and the throat. • The angle of diverging cone is 5 – 7o to ensure the minimum loss of energy. • For continuity of flow V1< V2 but P1> P2.

  5. ADVANTAGES OF VENTURI METER • The pressure recovery is much better than for the orifice plate. • Suitable for clean, dirty and viscous liquid. • Pressure loss is low. • Viscosity effect is high. • Relative cost is medium.

  6. VENTURI METER IN INDUSTRY • Intake System in Engine • Intake System is the Modular Venturi Tube which is found inside the intake. • The removable MVT assures correct air/fuel ratios at all rpm ranges. • It is also removable for additional air flow capabilities with customer-provided custom electronic tunin.

  7. Cont…VENTURI METER IN INDUSTRY • Venturi Injector (Air & water treatment)A venturi can be used to mix a fluid with air. At the end of the system, a mixture of fluid and air will appear.The simplest apparatus, as shown in the diagram, is a tubular setup known as a Venturi tube or simply a venturi. Fluid flows through a length of pipe of varying diameter.

  8. APPLICATION IN INDUSTRY - Flowmeter in pipelines

  9. SELF ASSESSMENT– Label the important part of venturi meter? 2 Converging Cone 15-20o 3 Throat 5 1 =x Entry Exit Diverging Angle 5-7o 4

  10. Refferences • www.pkb.edu.my • Douglas,J.F (1993). Solving Problems in Fluid Mechanics – Volume 1; Longman; Singapore. • Douglas,J.F, J.M Gasiorek & J.A Swaffield (1996). Fluids Mechanics – (3rded); Longman; Singapore. • Eastop,T.D & A. McConkey (1983). Applied Thermodynamics For Engineering Technologists (3rd ed); Longman; New York. • Janna, William S.(1987). Introduction To Fluid Mechanics (2nded); PWS Publishers; Massachusetts. • MohdGomenon bin Su (1989). TeknologiHaba & Bendalir; Delta; Selangor • Munson,Bruce R, Donald F.Young &Theodore H.Okiishi(1998). Fundamentals of Fluid Mechanics-(3rded);John Wiley & Sons,Inc; Canada • Prasuhn, Alan L (1980). Fundamentals of Fluid Mechanics; Prentice-Hall; London • R.S Khurmi (1975). A Text Book of Hydraulics, Fluid Mechanics and Hydraulic Machines; S. Chand & Co; New Delhi.

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