A 98% efficient ESP is to treat a gas stream flowing at 5000 m3/ min. If the effective drift velocity is 6.0 cm/s, calculate the number of plates if each plate is 6 m hy 10 m, and there are 3 mechanical fields.
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A 98% efficient ESP is to treat a gas stream flowing at 5000 m3/ min. If the effective drift velocity is 6.0 cm/s, calculate the number of plates if each plate is 6 m hy 10 m, and there are 3
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- For axial flow through a circular tube, the Reynolds numberfor the transition to turbulence is approximately 2300 based on the diameter and average velocity. Ifd= 5 cm and the fl uid is kerosene at 20 ° C, fi nd the volumeflow rate in m 3 /h that causes transition.Fluid Mechanics Problem The clamping forces on a horizontal pipe-bend are measured to be 1050 N in positive x-direction and 850 N in positive y-direction. Calculate the "one time lossfactor K" for the pipe-bend based on the velocity in the narrow part of the pipe-bends beginning which is 2 m/s. The pipe diameter at the beginning of the bend is 15 cm and 25 cm at the end of the bend. There is water that flows through the pipe-bend with temperature 20 degrees Celcius.Dresden, Germany has a population of 700,000 and a population density of2200 km-2 in the urban area. Assume that the electrical needs of Dresden are an average of1.0 kWe per capita and these are satisfied by a wind farm consisting of 100 m diameterthree-rotor wind turbines operating at optimal efficiency and with optimal spacing. If thewind velocity is constant at 7 m/s, what is the area of the wind farm? The optimal efficiency, η = 0.49 and The ideal spacing for a turbine is 300m by 1000 meters Sustainable energy, 2nd edition, Ch 10, Problem 17P
- Dresden, Germany has a population of 700,000 and a population density of2200 km-2 in the urban area. Assume that the electrical needs of Dresden are an average of1.0 kWe per capita and these are satisfied by a wind farm consisting of 100 m diameterthree-rotor wind turbines operating at optimal efficiency and with optimal spacing. If thewind velocity is constant at 7 m/s, what is the area of the wind farm? The optimal efficiency, η = 0.49 and The ideal spacing for a turbine is 300m by 1000 meters Answer in km2A cylinder with a mass 0.222 kg is sliding downwards through a vertically positioned pipe. A thin oil layer exists between the cylinder and the pipe's internal surface. Centerline of the cylinder and the pipe overlap. (yoil =8044.2 N /m3 ; voil=6-106 m²/s). Find the change in the speed of cylinder in the pipe with respect to its unit displacement and the shear stress that acts upon the oil layer. A A L = 128 mm V W 73.8 mm 74 mm 0.1 mm Figure 1A reducing elbow in a horizontal pipe is used todeflect water flow by an angle ϴ = 450from the flowdirection while accelerating it (Fig. 3). The elbowdischarges water into the atmosphere at a rate of 30kg/s. The cross-sectional area of the elbow is 150cm2 at the inlet and 25 cm2 at the exit. The elevationdifference between the centers of the exit and theinlet is 40 cm. The mass of the elbow and the waterin it is 50 kg. Determine the anchoring force neededto hold the elbow in place. Take the momentum-fluxcorrection factor to be 1.03 at both the inlet andoutlet. Density of water ρ = 1000 kg/m3, atmosphericpressure 101.0 kPa and g = 9.81 m/s2. Assumesteady, incompressible, frictionless and irrotationalflow.
- Two endlessly long flat plates, separated by 3 inches in distance but with a thickness of 5 inches, each transport alcohol (5 m/s, 1 Pa·s, S.G. 0.89 (ref. water at 4 degrees Celsius) to a given location with a specific velocity. Prove that the Reynold's number of the following problem is a value approximately around 90-100.what is non darcy flow equations and darcy equations, What the different between they?Jet water in pipe with diameter equal to 50 moving to velocity 30 divided into two branches with (0.75Q) and the other with (0.25Q) recpectively and Un equal diameter compnte value of force compenents on the plane
- An incompressible fluid (density 1000kg/m3) is flowing through a pipe with a constriction. The pipe is on an angle of 30 degrees with the narrow section at at distance of 10m from the wide section and lower that the wide section . The speed of the fluid in the wide section is 2m/s and 10m/s in the narrow section, I f the pressure in the wide section in 250 kPa. What is the pressure of the fluid in the narrow section ?A liquid with µ = 1.5x10-3 kgf.s / m2 flows over a horizontal wall. Calculate velocity gradient and shear stress at the limits and points located at 1, 2, 3 cm from its surface. Suppose a destruction of parabolic speed. THE parabola has its apex at point A and the origin of the axis system is at B.The velocity profile for laminar flow between two plates, as in Fig.3, is 2umaxy(h-y) h4 u= If the wall temperature is Tw at both walls, use the incompressible flow energy equation to solve for the temperature distribution T (y) between the walls for steady flow. Energy equation: dT pcp dt y=h y=0 •= kV²T +4 u(y) v=W=0 Tw T(y) Fig.3. Fluid flow between two walls