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    The Following Are The Data For The Pipe and Fittings

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    mohdnazir
    The document describes transferring a distillate liquid between tanks using a pump and piping system. The system includes 3-inch steel pipe 450 feet long, with a gate valve, two 90-degree elbows, and a check valve. Calculating the minimum horsepower needed for the pump given the flow rate, pressures, pipe characteristics, and efficiency. The total head loss is calculated considering friction in the pipe and fittings as well as entry and exit effects.

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    The Following Are The Data For The Pipe and Fittings

    Uploaded by

    mohdnazir
    133 views2 pages
    The document describes transferring a distillate liquid between tanks using a pump and piping system. The system includes 3-inch steel pipe 450 feet long, with a gate valve, two 90-degree elbows, and a check valve. Calculating the minimum horsepower needed for the pump given the flow rate, pressures, pipe characteristics, and efficiency. The total head loss is calculated considering friction in the pipe and fittings as well as entry and exit effects.

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    pipe fittings

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    Copy of PipeFitting

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    The document describes transferring a distillate liquid between tanks using a pump and piping system. The system includes 3-inch steel pipe 450 feet long, with a gate valve, two 90-degree elbows, and a check valve. Calculating the minimum horsepower needed for the pump given the flow rate, pressures, pipe characteristics, and efficiency. The total head loss is calculated considering friction in the pipe and fittings as well as entry and exit effects.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as XLS, PDF, TXT or read online from Scribd
    Download as xls, pdf, or txt
    133 views2 pages

    The Following Are The Data For The Pipe and Fittings

    Uploaded by

    mohdnazir
    The document describes transferring a distillate liquid between tanks using a pump and piping system. The system includes 3-inch steel pipe 450 feet long, with a gate valve, two 90-degree elbows, and a check valve. Calculating the minimum horsepower needed for the pump given the flow rate, pressures, pipe characteristics, and efficiency. The total head loss is calculated considering friction in the pipe and fittings as well as entry and exit effects.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as XLS, PDF, TXT or read online from Scribd
    Download as xls, pdf, or txt
    You are on page 1of 2

    A 35o API distillate is being transferred from a storage tank at 1 atm absolute pressure to a pressure vessel at 50 psig by means

    of the piping arrangements shown in figure. The liquid flows at the rate of 23100 lb/hr through 3 inch Schedule 40 steel pipe; the length of the straight pipe is 450 feet. Calculate the minimum horsepower input to the pump having an efficiency of 60 percent. The properties of the distillate are: viscosity = 3.4 cP, density = 52 lb/ft3. The following are the data for the pipe and fittings: For 3 inch Schedule 40 Nominal pipe, OD = 3.5 inch; Thickness = 0.216 inch Flow coefficients for the fittings (K) are: Gate valve = 0.25; 90o elbow = 0.9; Check valve = 10 Friction factor can be calculated from Blasius equation. Account for entry and exit losses also.

    Problem taken from: Momentum, Heat & Mass Transfer by Bennet & Meyers; McGraw Hill Solved by M.Subramanian; Lecturer, Department of Chemical Engineering, Sri Venkateswara College of Engineering, Sriperumbudur - 602105, India. E-mail: msubbu@svce.ac.in Web: http://www.svce.ac.in/~msubbu Done on: 14-Feb-2001

    Conversion Factors 1 feet 1 lb 1 inch 1 centipoise 1 atm 1 atm g Data given: Mass flow rate Density Viscosity Pipe OD Pipe thickness Pipe length Vertical height Pump efficiency (in fraction) Loss coefficient of Gate Valve Loss coefficient of elbow Loss coefficient of check valve Valve r m 23100 52 3.4 3.5 0.216 450 70 0.6 0.25 0.9 10 lb/hr 3 lb/ft cP inch inch feet feet = = = 0.3048 0.454 0.0254 0.001 14.7 1.01E+05 9.812 m kg m kg/m.sec psi N/m2 2 m/sec Converted data: 2.913167 kg/sec 3 833.7087 kg/m 0.0034 kg/m.sec

    L z1-z2

    = =

    137.16 m 21.336 m

    Pipe ID Pressure at 2 Calculations:

    D P2

    3.068 inch 50 psig

    = =

    0.077927 m 2 344642.9 N/m

    Volumetric flow rate Q Velocity v Reynolds Number NRe Friction factor f hf of pipe v /2g hf of Gate valve hf of 2 number of elbows hf of Check valve hf of sudden contraction at inlet hf of sudden expansion at outlet Total frictional head Pump head Minimum power for the pump
    2

    3 0.00349 m /sec 0.7326 m/sec 13999 0.00726

    1.3985 m 0.02735 m 0.00684 m 0.04923 m 0.27351 m 0.01094 m 0.02735 m 1.76642 m 22.561 m 1074.81 Watt

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