Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 52 views

    Tutorial 3 - DMCF 2223 (Manometer)

    Uploaded by

    zul hilmi
    1. The document provides examples of using manometers to measure pressure in various systems. It includes 12 problems involving determining pressures, pressure differences, and densities using manometer readings and given fluid properties. 2. Manometers containing liquids like mercury, water, and oil are used to measure pressures in tanks, pipes, and underwater structures. Readings of different fluid levels in the manometers are used with fluid densities to calculate desired pressure values. 3. Various manometer configurations are shown, including U-tube, inverted U-tube, and differential manometers. Problems require determining pressures, pressure differences, and densities based on the specific manometer setup and fluid level readings.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Tutorial 3 - DMCF 2223 (Manometer)

    Uploaded by

    zul hilmi
    52 views4 pages
    1. The document provides examples of using manometers to measure pressure in various systems. It includes 12 problems involving determining pressures, pressure differences, and densities using manometer readings and given fluid properties. 2. Manometers containing liquids like mercury, water, and oil are used to measure pressures in tanks, pipes, and underwater structures. Readings of different fluid levels in the manometers are used with fluid densities to calculate desired pressure values. 3. Various manometer configurations are shown, including U-tube, inverted U-tube, and differential manometers. Problems require determining pressures, pressure differences, and densities based on the specific manometer setup and fluid level readings.

    Original Description:

    Copyright

    © © All Rights Reserved

    Available Formats

    PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    1. The document provides examples of using manometers to measure pressure in various systems. It includes 12 problems involving determining pressures, pressure differences, and densities using manometer readings and given fluid properties. 2. Manometers containing liquids like mercury, water, and oil are used to measure pressures in tanks, pipes, and underwater structures. Readings of different fluid levels in the manometers are used with fluid densities to calculate desired pressure values. 3. Various manometer configurations are shown, including U-tube, inverted U-tube, and differential manometers. Problems require determining pressures, pressure differences, and densities based on the specific manometer setup and fluid level readings.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    52 views4 pages

    Tutorial 3 - DMCF 2223 (Manometer)

    Uploaded by

    zul hilmi
    1. The document provides examples of using manometers to measure pressure in various systems. It includes 12 problems involving determining pressures, pressure differences, and densities using manometer readings and given fluid properties. 2. Manometers containing liquids like mercury, water, and oil are used to measure pressures in tanks, pipes, and underwater structures. Readings of different fluid levels in the manometers are used with fluid densities to calculate desired pressure values. 3. Various manometer configurations are shown, including U-tube, inverted U-tube, and differential manometers. Problems require determining pressures, pressure differences, and densities based on the specific manometer setup and fluid level readings.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 4

    UNIVERSITI TEKNIKAL MALAYSIA MELAKA

    FAKULTI KEJURUTERAAN MEKANIKAL

    MEKANIK BENDALIR 1

    TUTORIAL 3
    PRESSURE MEASUREMENT BY MANOMETER

    1. The water in a tank is pressurized by air,


    and the pressure is measured by a multi-fluid
    manometer as shown in the Figure 1. Determine
    the gage pressure of air in the tank if h1 = 0.2
    m, h2 = 0.3 m, and h3 = 0.46 m. Take the
    densities of water, oil, and mercury to be 1000
    kg/m3, 850 kg/m3, and 13,600 kg/m3,
    respectively.
    [Ans: 56.9 kPa]

    Figure 1

    2. Both a gage and a manometer are attached


    to a gas tank to measure its pressure (Figure 2). If
    the reading on the pressure gage is 80 kPa,
    determine the distance between the two fluid
    levels of the manometer if the fluid is
    (a) mercury ( = 13,600 kg/m3)
    (b) water ( = 1000 kg/m3)
    [Ans: 0.60 m, 8.16 m]
    Figure 2

    Fluid density
    D
    3. Using a u-tube manometer (Figure 3) to
    measure gauge pressure of fluid density
    h2
    r = 700 kg/m3, and the manometric fluid is A
    mercury, with a relative density of 13.6. What h1
    is the gauge pressure if: B C
    (a) h1 = 0.4m and h2 = 0.9m? [Ans: 1.17 bar]
    (b) h1 stayed the same but h2 = -0.1m?
    [ Ans : -0.16 bar]
    Manometric fluid density man

    Figure 3
    Fluid density 
    4. In the Figure 4 two pipes containing the
    same fluid of density  = 990 kg/m3 are Fluid density 
    A
    connected using a u-tube manometer. What is
    the pressure between the two pipes if the B
    manometer contains fluid of relative density ha = 1.5 m
    13.6? [ Ans: 54 568 N/m2 ] hb = 0.75 m
    h = 0.5 m

    C D

    Manometric fluid density man = 13.6


    Figure 4

    5. Fresh water and seawater flowing


    in parallel horizontal pipelines are
    connected to each other by a double U-
    tube manometer, as shown in the Figure
    5. Determine the pressure difference
    between the two pipelines. Take the
    density of seawater at that location to
    be  = 1035 kg/m3. Can the air
    column be ignored in the analysis?
    Explain.
    [Ans: 3.39 kPa]
    Figure 5

    6. The gage pressure of the air in the tank


    shown in the Figure 6 is measured to be 65
    kPa. Determine the differential height h of the
    mercury column. [Ans: 47 cm]. If the water in
    thank is replaced with gas A having the same
    pressure, 65kPa, what would be the new h,
    and how much the new h would differ to the
    old h?
    Figure 6
    7. A closed cylindrical tank filled with water Hemispherical donme
    has a hemispherical dome and is connected to
    an inverted piping system as shown in Figure SG = 0.8
    7. The liquid in the top part of the piping pA = C
    4m
    system has a specific gravity of 0.8, and the 60 kPa 3m
    remaining parts of the system are filled with A
    water. If the pressure gage reading at A is 60
    kPa, determine: 3m
    (a) the pressure in pipe B
    (b) the pressure head, in millimetres of 2m
    mercury, at the top of the dome (point C) B
    [Ans: 103 kPa, 230 mm] Water
    Figure 7

    Manometer fluid

    1m
    8. For the stationary fluid shown in Figure 8, the
    2m pressure at point B is 20 kPa greater than at point
    A. Determine the specific weight of the manometer
    A fluid. [Ans: 7, 100 N/m3]
    2m
    SG = 1.2
    B
    Density = 1500 kg/m3

    Figure 8

    9. The mercury manometer of Figure 9 indicates


    a differential reading of 0.30 m when the
    pressure in pipe A is 30-mm Hg vacuum.
    Determine the pressure in pipe B, when the
    specific weight of oil is 8.95 kN/m3.
    [Ans: 33.97 kPa]

    Figure 9
    10. The tube in Figure 10 is filled with
    oil of specific gravity 0.85. Atmosphere
    (a) Determine the pressure at A. Air A.
    (b) Express the pressure at A in meter of 0.5 m
    water. .
    [Ans: - 4169.25 Pa , - 0.425 m]

    Oil of S.G. = 0.85


    Figure 10

    11. An air-filled, hemispherical shell is


    attached to the ocean floor at a depth of 10
    m as shown in Figure 11. A mercury
    barometer located inside the shell reads 765
    mm Hg, and a mercury U-tube manometer
    designed to give the outside water pressure
    indicates a differential reading of 735 mm Hg
    as illustrated. Based on these data what is the
    atmospheric pressure at the ocean surface?
    Given the specific weight of sea water is 10.1
    kN/m3.
    Figure 11 [Ans: 95.49 kPa]

    12. A 0.02-m-diameter manometer tube is


    connected to a 6-m-diameter full tank as
    shown in Figure 12. Determine the density of
    the unknown liquid in the tank.
    [Ans: 1927 kg/m3]

    Figure 12

    You might also like