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In a glass factory a 6 ft-wide sheet of glass at 2700 R comes out of the final rollers, which fix the thickness at 0.2 in. with a speed of
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- 3.) An air compressor handles 8.5 m’/min of with a density of 1.26 kg/m³ and a pressure of 1 atm, and it discharges at 445 kPa (gage) with a density of 4.86 kg/m³. The change in specific internal energy across the compressor is 82 kJ/kg, and the heat loss by cooling is 24 kJ/kg. Neglecting changes in kinetic and potential energies, find (a) the work in kJ/kg and (b) the power in kW.arrow_forwardTwo chambers, Chamber 1 and Chamber 2 where pressure at chamber 1 p1=70 kPa, at chamber 2 the pressure p2 = 5kPa. There is an orifice between the two chambers with diameter of 6 cm, Cc= 1.00, Cv=0.95 and the head of the liquid(s=2.50) over the orifice is 1.80 m. Find the actual flow rate through the orifice. a.25 L/s b.45 L/s c.35 L/s d.15 L/sarrow_forwardAn incompressible fluid flows through a nozzle at 5 kg/s. What is the final velocity if inlet velocity is 5 m/s, and the area of the exit is half the area of the inlet?arrow_forward
- Example 3.4 A jet of water 100mm in diameter, moving with a velocity of 25m/s in the direction of the vane, enters the vanes moving with a velocity of 12.5m/s. if the jet leaves the vanes at an angle of 60° with the direction of motion of the vanes, find i. Force on the vanes in the direction of their motion ii. Work done per second.arrow_forwardQ2/ An outward flow reaction turbine has tangential velocity at its inner rim as 20 m/s, and ratio of radii is 0.9. The turbine is placed 1 m below the water surface and blade angle are 90° and 20° at inlet and outlet respectively. The radial velocity of flow at inlet is 6 m/s. Neglecting frictional losses and taking the discharge as radial, draw velocity triangles at inlet and outlet and find: (a) guide vane angle (b) the velocity of water from the guides. (c) total head of water (d) hydraulic efficiencyarrow_forwardQ4: Find the force when 60 kg of blood is given upward of about 0.1s, in a velocity nearly 1 m/s.arrow_forward
- The velocity of water and pressure at the suction side of a pump is 4m/s and 90kPa respectively. If the velocity of water is 8m/s and the pressure is 140kPa on the discharge side of a pump, what is the head added by the pump?arrow_forwardIn the jet impact experiment, water jet impacts on a curved vane in the vertical direction. As shown in the figure below, the exit has an angle with respect to the vertical direction. The distance from the nozzle to the vane surface at the exit is h. The water volume flow rate is measured to be Q, the density of water is p, and the cross section area of the nozzle is A₁. Assume that the flow has reached the steady state. (1) Use the Bernoulli's equation to determine the velocity Vout at the exit of the vane. Assume that friction between water and the curved vane can be neglected. (2) Apply the Reynolds transport theorem to derive the expression of the impact force F, on the curved vane (neglect the jet weight). (3) Under the condition of a fixed volume flow rate Q, determine the maximum impact force Fr,max that can be obtained when the angle varies (e.g. in different vane designs). Va out 9 Ao Vout harrow_forwardWater from a large reservoir drives a turbine, and exits as a free jet from a pipe of diameter D. The jet is deflected by a vane, and the horizontal force required to hold the vane is F directed to the left. Given: h = 40m, D = 0.15m, 0 = 30°, F, = 1500N, and Pw = 1000 kg/m³. Assume velocity magnitude at exit of vane is equal to that at entrance. If all losses are negligible, calculate: (a) The power developed by the turbine in kW. (b) The pressure difference across the turbine, and express it as a head (m). h Figure 1: Problem 2, A sketch (not-to-scale) Equations used must be labeled appropriately: conservation of mass, principle of linear momentum, principle of angular momentum, or first law of thermodynamics. Control volumes must be drown and clearly defined. List all assumptions.arrow_forward
- Problem 2. A garden hose with an attached nozzle is used to fill a container with water. The nozzle starts at a diameter of 2 cm and is then reduced to 0.8 cm at the exit. In 50 seconds, the nozzle and hose are able to fill the container with 10 gallons of water. Find the volumetric flow rate (m³/s), the mass flow rate (kg/s), and the average velocity (m/s) at the at the nozzle exit. Assume the density p of water is 1000 kg/m³.arrow_forwardTwo air flows are mixed to a single flow. One flow is 1.2 kg/s at 25 °C and the other is 2.5kg/s at 220 °C, both at 360 kPa. They combine to generate an exit flow at the same pressure. Find the exit temperature and volume flow rate in (L/s). roarrow_forwardAt the inlet to a certain nozzle the enthalpy of fluid passing is 2800 kJ/Kg. In addition, the velocity is 50 m/s. At the discharge end, the enthalpy is 2600 kJkg. The nozzle is horizontal and there is negligible heat loss from it. a. Find the velocity at the exit of the nozzle? b. If the inlet area is 900 cm and specific vohme at the inlet is 0.187 m'kg, find the mass flowrate? c. If the specific volume at the exit of the nozzle is 0.498 m/kg, find the exit area of nozzle? Fhuid in Fhaid out V2= ? A2= ? V- 50 m/s A- 900 cm? hi- 2800 kJ/kg h2= 2600 kJ/kgarrow_forward
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