ale turbine is req d to run at 430 rp ops 100 kw and ill be admitted fr n/
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- At the point of operation with maximum efficiency, a turbine indicated unit power of 12 units and unit speed of 98 units and operates with 3300 kgf/ s of flow. What is the speed in rpm and the specific speed of the machine respectively when its design head is 8.5m?The diameter of a single reciprocating pump is 100 mm and its stroke length is 200 mm. The pumpaa at 90 rpm and lifts water through a height of 35m. Calculate the power required to run the pumpHow many kW are delivered by the water flow to the turbine? O 62 kW O 85 kW O 77 kW O 70 kW
- A four-stage (parallel) pump delivers 15 m per minute of liquid The total head obtained is 27m. Initially, the impeller measures 24cm in diameter running at 1950 rpm it is desired to construct a pump at a certain number of stages in series that should run at 1450 rpm delivering 18m3/min with 280m of head in total What should be the new diameter of the impeller and number of stages?1. The velocity of water is 8 m/s and the pressure is 140 kPa on the discharge side of a pump. a. What is the head of the pump if the velocity is 4 m/s and the pressure is 90 kPa on the suction side of the pump? b. How much power is required to drive it if the diameter of the suction side is 600 mm? c. If the pump is rated at 120 hp, what is the efficiency of the pump neglecting energy losses in the system? Pj=90 kPa P>=140 kPa Vj=4m/s ♡ Vz=8m/s Suction side Discharge side 600 mumProblems A Kaplan turbine develops 8,000 HP under an effective head of 5 m. Its speed ratio is 2 and flow ratio is 0.6 and the diameter of the boss = 0.35 times the external diameter of the runner. Efficiency of the turbine is 90 percent. Calculate the diameter of the runner, speed of the runner and also its specific speed. Take 1 HP = 735.75 watt and calculate specific speed with power unit in HP.
- The discharge through pump is 10 cubic metre per second and the total head is 100 feet. So calculate the unit power of pumpA hydraulic turbine develops 5000 kW under a head of 30 m when running at 100 rpm. This turbine belongs to the category of A Pelton wheel B Francis Turbine C Kaplan Turbine D Propeller TurbineA Francis turbine of diameter 3.0 m develops 6750 kW at 300 rpm under a net head of 45 m. A geometrically similar model of scale ratio 1: 8 is to be tested at a head of 9 m. Estimate the size, speed discharge and power developed by the model. What is the specific speed of the model? (Assume overall efficiency of 0.82 for both the prototype and model)
- During the test of a Pelton wheel, the pressure at the end of the 6.10" diameter nozzle was 515 psig when the flow is 2,615 ft/min. The peripheral coefficient is 0.46, the turbine specific speed is 6.20 rpm, and the penstock diameter is 1.5 feet. If the mechanical efficiency is 86% and electrical efficiency is 85%, determine the diameter of wheel in feet.A well-insulated turbine operating at steady state is shown on the right. Steam enters at 3 MPa, 400°C, with a volumetric flow rate of 85 m³/min. Some steam is extracted from the turbine at a pressure of 0.5 MPa and a temperature of 180°C. The rest expands to a pressure of 6 kPa and a quality of 90%. The total power developed by the turbine is 11,400 kW. Kinetic and potential energy effects can be neglected. Determine (a) the mass flow rate (in kg/s) at each exit, and (b) the diameter of the duct, d₂ (in cm) where steam is extracted P₁ = 3MPa T₁=400°C (AV)₁ = 85 m³/min Turbine P2 = 0.5 MPa T₂ = 180°C V₂= 20 m/s Power out ¹3 P3= 6 kPa x3 = 90%A pipe is used to deliver water at a rate of 3.8 m³/s from the intake to the turbine. The difference in elevation between the intake’s water surface and the turbine is 200 m. Knowing the headloss in the pipeline from the intake to the turbine is 8 m, find the power (in kW) generated by the turbine if its efficiency is 80%.