Concept explainers
The pressure drop in a section of pipe can be calculated as
where
where
where
(a) Determine
(b) Repeat the computation but for a rougher commercial steel pipe
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- Reynolds number for pipe flow may be expressed as Re = (4 m/ Trd) / µ Where m = mass flow, kg/s d= pipe diameter, m p = viscosity, k/m s In a certain system, the flow rate is 5.448 kg/min +0.5 %, through a 0.5" (inch) diameter (±0.005"). The viscosity is 1.92x 10-5 kg/m s, ±1 %. Calculate the value of the Reynolds Number and its uncertainty. Determine the main contribution to uncertainity.arrow_forwardYou are being asked to determine the heights in tubes B and C (relative to z=0) given the following information: The specific weight of Air is Pair = 11.9N/m3 The specific weight of glycerine is Paiye = 12355N/m3 The specific weight of gasoline is Pgas = 6677N/m3 The gauge pressure at A is Pa = 1.6kPa The height of the tank of air is a = 1.7m The height of the tank of gasoline is y = 1.6m The height of the tank of glyercin is k = 0.95m A в с xm Air y m Gasoline k m Glycerin z = 0 As a HINT, you do not need to know the specific elevations of the tubes B and C entering their respective fluids, but you do need to account for this. Input the height the fluid rises in B to 2 decimal places here: (in metres) Input the height the fluid rises in C to 2 decimal places here: (in metres)arrow_forwardThe Reynolds number is a dimensionless group defined as follows for a liquid that flows through a pipe: Re = Dvρ / μ where D is the diameter of the pipe, v is the velocity of the fluid, ρ is its density and µ its viscosity. When the Reynolds number value is less than 2100, the flow is laminar, that is, the liquid it moves in lines of smooth flow. For Reynolds numbers greater than 2100, the flow is turbulent, characterized by considerable agitation. Liquid Methyl Ethyl Ketone (MEK) flows through 2067 '' ID tubing and through an average velocity of 0.48 ft / s. If the fluid temperature is 20 ° C, the density of the MEK The liquid is 0.805 g / cm and the viscosity is 0.43 cP (1 cP = 1.00 x 10 kg / (m-s)]. Determine the Reynolds number for MEK flow conditions. (Round the final result to a whole number without decimals).arrow_forward
- 3. Determine: (a) The equivalent length in meters of pipe that would have the same loss as a fully open angle valve placed in a 150 mm commercial steel pipe, (b) The output power by a 70% efficient turbine if the energy delivered by the water to the turbine is 58 N.m/N and the rate of flow is 115 L/min. (c) The volume flow rate of the fluid [sg = 1.32] as it escapes through a 30mm hole in the side of a tank down 4m from the top of the fluid's surface when the coefficient of velocity is 0.90 and the coefficient of area is 0.82. (d) The pressure drop across a 45 degree standard elbow in a 75 mm commercial steel pipe when oil sg = 0.85 is flowing at 800L/minarrow_forwardThe pressure of water flowing through a pipe is measured by the arrangement shown below. For the values given, calculate the pressure in the pipe. Po=30 kPa Air Pipe Waler 15°C Water hy = 50 cm 15°C L=6 cm h = 8 cm 4=6 cm Ciage fluid SG = 24arrow_forwardWindmill Electric Power It is becoming increasingly common to use wind turbines to generate electric power. The power output generated by a windmill depends upon the blade’s diameter (D) and velocity of the wind (V). A good estimate of the power output is given by the following formula: P = (0.01328)D2V3 where P= Power Output (Watts) D = Diameter of the windmill blade in meters V = Velocity of the wind in m/s. Use the Secant method to determine what should be the diameter of the windmill blade if one wishes to generate 800 watts of electric power when the wind speed is 16mph. (1 m/s = 2.2369 mph).Use Ea ≤ 0.00001.arrow_forward
- Q/ From the table of water properties at average temperature T, find the water properties: density p, viscosity µ. Then calculate: The cross section area of chamber A= T/4 d2 (cm2 ) The pressure difference along L AP=p g h (atom) Volumetric flow rate q=Q/t (cm3 /s) and finally calculated permeability (Darcy D) qul ΑΔΡ Repeat these reading three time and then find the average of permeability. The informations are : D = 9.9 cm L = 25 cm T= 22 °C V (cc) 600 t (sec) 187 H1 (cm) 108 3 H2 (cm) No 1 2 600 176 109 4 3 600 184 107 3arrow_forwardThe pressure drop (Ap) test is carried out using a pipe configuration as illustrated below: Manometer 1 Manometer 2 straight pipe D= 2R R= radius in pipe The pipe data and the flowing fluid are as follows: Pipe: D = 1 cm; L= 100 cm. Fluid: Water, with density (A) = 1000 kg/m"; absolute viscosity (u) = 0.001 kg/im.s); Experimental data is shown as shown in the following table: Task: Ja. Plot the graph of the pressure as a function of the average velocity (V.v). b. Based on the equation for laminar flow in the pipe as follows: Ap = 32VuL, Vavg (m/s) Ap (Pa) 0,001 0,002 0,005 0,01 0,02 0,04 0,06 0,08 0,1 0,12 0,15 0,30 0,62 1,61 3,10 6,10 12,10 20,10 26,00 32,50 38,90 47,20 D Compare the experimental results in the table with the results of calculations using the above equation. Leave a comment. Note: Ap = p1-p2. c. The coefficient of friction (f) in the pipe is formulated as follows: f- 2DAD PL(V.) plot (plot) this distribution of fas a function of the Reynolds number (Re). Re is…arrow_forward1- Describe and discuss the following using your own words (maximum of half a page for each): A- Analysis of pipeline flow based on compressible flow B- The differences between single and multiphase flow C- Mesaimeer Pumping Station in Qatar D- Dolphin Gas Project, Ras Laffan in Qatar E-Explain the purpose and operation of emergency shutdown valves F- Explain the purpose and operation of pressure safety valves G-Determine various methods of pressure regulation in pipelinesarrow_forward
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