Calculate the gas flow rate.
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- 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 mFor an inlet valve, the mass flow rate through the valve is 0.44 kg/s. The flow coefficient is 0.62 and the cylinder pressure is 105 kPa. Assume intake system pressure and temperature are 180 kPa and 527 K, the specific heat ratio is 1.3 and R =287 J / kg.K. The area of the valve is (SI unit): Select one: a. 2.30*10-3 O b. 3.45*10-2 O c. 1.43*10-3 O d. 1.75*10-3 O e. 0.85*10-23. A pump steadily circulates oil used for lubricating heavy machine tools. The volume flow rate and temperature of the oil are 300 gal/min and 104°F, respectively. At 104°F, the kinematic viscosity and the specific gravity of the oil are 2.15 x 10-3 ft² /s and 0.89, respectively. The pipe lengths are 25 ft for the 4-in diameter pipe and 75 ft for the 3-in diameter one. The Schedule-40 steel pipe has an average roughness element size of 0.0018 in. If all minor losses can be ignored, evaluate how much power (in a unit of horsepower) the pump delivers to the oil. 6 ft 22 ft Flow 15 ft Discharge line 3-in Schedule 40 Suction line 4-in Schedule 40 steel pipe steel pipe Pump
- (b) Figure 3 shows a pump with 80% efficiency (no) delivers 50 Liter/s of water at 20°C from tank 1 to tank 2. The pipeline has 150 mm diameter with a length of 200 m made of galvanised steel. Evaluate the input power to an electric motor of 90% (nm) efficiency that connected to the pump. The globe valve used is % wide open. 2 100 m GLOBE VALVE PRESSURE GAUGE МОTOR PUMPThe temperatures of the 20 ºC 25 ºC 30 ºC water at outlet Task 1 Explain the system parameters using the Non- Flow Energy EquationA Process fluid is pumped from the bottom of one distillation column to another, using a centrifugal pump. The line is a standard commercial steel pipe with a 75 mm internal diameter. From the column to the pump inlet the line is 25 m long and contains six standard elbows and a fully open gate valve From the pump outlet to the second column, the line is 250 m long and contains ten standard elbows, and four gate valves (operated fully open). The fluid level in the first column is 4 m above the pump inlet. The feed point of the second column is 6 m above the pump inlet. The operating pressure in the first column is 1.05 bara and that of the second column is 0.3 barg. (i) Draw the system, (ii) determine the operating point on the pump characteristic curve. (iii) determine the NPSH at this flowrate. The physical properties of the fluid are: density 875 kg/m³, viscosity 1.46 mNs.m², and vapour pressure of the fluid at the pump suction is 25 kN/m². Kelbow-0.75, Kvalve 0.17. Flow rate, m³/h…
- The mass flow rate in a tube with one inlet and one outlet varies if the flow is incompressible True O FalsePLease include a diagram.A Special oil is to be used in an absorption tower. The preliminary design of the unit requires the oil to be pumped from an open tank with a 10 ft liquid level above the floor and forced through 150 ft of 3 inches schedule 40 pipe with a ball check valve and 5 elbows into the top of a tower 30ft above the floor. The operating pressure in the tower is to be 52 psig and the oil requirement is estimated at 50gpm. The viscosity of the oil is 15cP and its density is 53.5 lbm/ft3. Assuming the pumping outfit operates with an overall efficiency of 60%, what horsepower input will be required for the pump motor?Problem 1. A fluid is flowing in a 20 cm diameter pipeline with a velocity of 5.50 m/sec. The pressure at the center of the pipe is 35 kPa, and the elevation of the pipe above an assume datum is 5 m. Compute the total energy flowing fluid if it is (a.) water, (b.) molasses (s = 1.20) and (c.) gas (w = 4.29 N/). ANSWERS MUST BE IN 3 DECIMAL PLACES ALL THE WAY.
- A pitot-static probe is used to determine the flow velocity of air at 20°C by using water manometer as shown in Figure 5. If the vertical difference of both arms in the manometer is 6 cm. Find, i. pitot formula to obtain the flow velocity ii. the pressure difference inside the system, and iii. air velocity inside the system. Air Pitot 6 cm tube Manometer Figure 5The maximum velocity of an air flow (v= 700 ms-1 and T=160 oCA stream of air at 35°C and a gauge pressure of 0.5 atm (Stream 1) flows into a pipe passing through a heater, emerges at 87°C and 0.2 atm (gauge), and splits into two streams. Stream 2 passes out of the system, and Stream 3 goes through another heater and emerges at 180°C and 0.1 atm (gauge).Flowmeters mounted in all three streams show readings of 3120 L/min (Stream 1), 1940 L/min (Stream 2), and 3420 L/min (Stream 3).(a) Show that the system is not functioning properly.(b) Speculate on several possible causes of the malfunction, and state how you would check each one.