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- Assuming a steady-state laminar flow, calculate the permeability from the following measurement made on core sample by using air. Flow rate = 2 cm3 /sec, T = 65°F, upstream pressure = 30 psi, downstream pressure = 14.7 psi, A = 0.004 ft2, L = 1.181 in, viscosity = 0.018 cp also calculate flow rate in bbl/day.A condensate pump at sea level draws water from a condenser in which a 27.5 inHg vacuum is maintained. The friction and turbulence loss in the piping between the two is estimated to be 4 ft. What minimum height of water level in the condenser above the pump centerline must be maintained if required suction head of the pump is 12 ft for the maximum capacity of the pump?2. A centrifugal pump installation has been designed to discharge 0.126 m^3/s of brine (sp.gr. = 1.2). The suction pipe is 305 mm and is at the same level as the discharge pipe which is 203 mm in diameter. At the centerline of suction flange, the vacuum is 154.2 mm Hg. The discharge pressure gauge reads 0.1379 MPa and is connected 1.22 m above the discharge flange centerline. The pump is driven by a 35 KW electric motor that will not carry overload and has an efficiency of 82%. There is no significant head loss. The design conditions have changed, and is now desired to increase the capacity of the pump by increasing the speed. The motor is so designed that its speed maybe increased but its power cannot exceed its design rating. Assuming the pump efficiency to remain constant, how much can the pump capacity be increased without overloading the motor?
- 5. The total head of a fan is 185 m and has a static efficiency pressure of 210 mm of water gage.What is the velocity of air flowing if the density of air is 1.15 kg per cubic meter? 8. A coal fired steam boiler uses 3000 kg of coal per hour. Air required for combustion is 15.5 kg ofcoal at barometric pressure of 98.2 KPa. The flue gas has temperature of 285 degree Celsiusand an average molecular weight of 30. Assuming an ash loss of 11% and allowable gas velocityof 7.5 meters per second. Find the diameter of the chimney 9. The gas density is 0.75 kg per cubic meters and air density is of 1.15 kg per cubic meter. If thedriving pressure is 0.25 KPA. Determine the height of the chimney. 10. A powerplant situated at an altitude having an ambient air of 96.53 KPa and 23.88 degreeCelsius. Flue gases at a rate of 5.0 kg per second enter the stack at 200 degree Celsius andleaves at 160 degree Celsius. The flue gases gravimetric analysis are 18% CO2, 7% O2 and 75%N2. Calculate the height of…please answer A pump impeller rotating at 1400 rpm has an outside radius of 21 cm, the vane outlet angle β2 is 158° and the radial velocity at the outlet Cr2 is 4 m/s. Assuming radial flow at inlet, draw the theoretical outlet velocity diagram and calculate the various velocities and angles.( A)What is the theoretical head Ho, in meters, assuming that the circulatory flow coefficient η∞ = 1.,(B)In the preceding example; assume a deviation of 10° applied to β2 due to circulation after the modern theory. The flow is 30 lit/s. After drawing/illustrating the velocity diagram, find the theoretical head Ho, in meters, assuming radial flow at inlet, neglecting the deviation in inlet velocity diagram. (c)Assuming that the mechanical efficiency ηmech = 0.95, the hydraulic (or manometric) efficiency ηman = 0.8, find the required break horsepower to drive the pump.Water enters at section 1 at 10 m/s with sp gr of 0.998 and alcohol enters sections 2 at 6 m/s with sp gr of 0.8. Pipes 1, 2 are of 3 cm in diameter and pipe 3 is of diameter 4 cm. Compute the exit velocity and density of the mixture. Assume ideal mixing of incompressible fluids. Please provide complete solution
- A reverse osmosis machine for purifying brackish water contains roughly 900,000 hollow threads that allow water to pass through while rejecting the majority of the salt. The fibers have an outside diameter of 85 m, a diameter of 42 m, and a length of roughly 3 ft. When the feed pressure is 400 psig, the average flow through the tubes is 2,000 gal of water every 24 hours. From the feed end to the discharge end, what is the pressure drop within a single fiber?a) Calculate the maximum flux the liquid water can have ( η = 0.891 cP and ρ = 0.998 g/mL a 20 ºC) when flowing through a 2 mm diameter tube, in the laminar regime.b) If the pressure when entering the tube is 1 bar, how many meters will it need for the pressure to decrease a 10%? Data: dina/cm3 = 10 Pa/m; 1 bar = 105 Pa. Results: 2.81 cm3/s, 1.57 mA pump draws water from an 8 in. suction pipe and discharges through a 6 in. pipe in which the velocity is 12 fps. The pressure is –5 psi at point 1 in the suction. The 6 in. pipe discharges horizontally into the air. The power delivered to the pump is 30hp whose efficiency is 70. Determine: a. the water horsepower 21 18 15 b. the total dynamic head in feet 94.316 78.564 67.369 c. To what height h in feet above the suction gage can the water be raised? 81.716 65.498 54.303 please answer immediately thankyou
- A sealed tank filled with a fluid which is maintained at 0.35 bar gauge and 20 0C. The fluid discharges to the atmosphere (1.013bar) through a small opening at the side of the tank (z1 = z2 ). a) Calculate the velocity of fluid leaving the tank; assume the flow to be compressible and the process to be frictionless adiabatic.b) Calculate the velocity of fluid leaving the tank if the flow is incompressible and the process to be frictionless.c) Compare the calculated velocities and comment on the result. Take for fluid,α=1.0P=kρɤ ɤ =1.4R=287 J/kg.KMach number<0.3, incompressible flow. (Fluid Mechanics Question) (Please solve step by step)Air flows through a duct at 2,700 cubic feet per minute (CFM). After several feet and a few vents, the air-flow decreases to 1,890 CFM. What is the percent drop that has occurred? (Simplify your answer completely.)1. For a given pump, the diameter, the gauge pressures at the inlet and outlet are −30 × 103 P a and 200 × 103 P a, respectively. If the flow rate is 0.1 m3/s, and the power required is 25 kW, find the efficiency. The intake and discharge are at the same height. 2. The impeller of a radial-flow turbine has an outer radius of 4 f t, turning at 200 rpm. The volume flow rate is 1000 ft3/s, and it discharges in the axial direction. Neglect all losses. If the tangential component of the velocity at the inlet is 5 f t/s, find: (a) The torque exerted on the impeller. (b) The power developed by the machine.