Calculate the power output from the turbine if the turbine efficiency is 75% and velocity at the nozzle 3 m/s and diameter of nozzle 50mm . EL=50m EL=30m
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- A 5 MW turbine is developed under an effective head of 320 m. The turbine efficiency is85%. Velocity coefficient of the nozzle is 99%.(a)Select which is the appropriate turbine based on effective head. (b)What should be the wheel diameter in meters assuming it is 12 times the diameter of the jet?It is desired to develop a 5 MW turbine under an effective head of 320 m. The turbine efficiency is85%. Velocity coefficient of the nozzle is 99%.(a)Select which is the appropriate turbine based on effective head.(b)What should be the wheel diameter in meters assuming it is 12 times the diameter of the jet?The turbine of a micro-hydroelectric power plant delivers 65hp at 75% efficiency. If the effective head is 115ft, how many cubic feet per minute of water must be used.
- An impulse turbine develops 5000 HP where the nozzle is located 15 meters above tailwater. Water flows through a 1 meter diameter penstock at a velocity of 1.5 m/s. The turbine efficiency is 85% and the generator efficiency is 95%. If the head loss is 10% of the gross head, calculate the pressure (kPa) at the base of the 250mm nozzle diameter and the elevation (m) of the water source above the tailwater.A Pelton wheel works at the foot of a dam because of which the head available at the nozzle is 400 m. The nozzle diameter is 160 mm and the coefficient of velocity is 0.98, The diameter of the wheel bucket circle is 1.75 m and the buckets deflect the jet by 150°. The wheel-to-jet speed ratio is 0.45. Neglecting riction, calculate (1) the power developed by the turbine, (i) its speed and (i) hydraulic efficiency.A small-hydropower equipment manufacturer supplied a four-jet Pelton runner with a pitch circle diameter of 35 in. The turbine was to generate 5 hp under a head of about 45 ft. Determine the jet diameter that will be required to generate the desired power.
- what is the overall efficiency of the turbine if the power developed is 12 MW at the head of 150 m and a nozzle discharges 10 m³ each secondFor an inward flow reaction turbine has an external diameter as 1.5 m and width of 13.5 cm. The turbine speed is 600 rpm and the water flow rate is 420m / min. The turbine operates under a head of 260 m and developing 16.12 MW. Calculate efficiency, baled angle at inlet, and guide vane angle at inlet, if the velocity at the draft tube inlet is 16 m / s.For an installed capacity of 35 kW and a design flow of 150 l/s, what is the head required if the overall efficiency is 70%?
- A Pelton wheel is to be designed for a head of 400 m when running at 500 rpm. The Pelton wheel develops 10000kW shaft power. The blade angle at outlet is 15º. The relative velocity of water is reduced by 5% by moving over the buckets. Velocity of the buckets = 0.45 times the velocity of the jet, overall efficiency = 0.8 and coefficient of the velocity = 0.98. If the Pelton wheel is provided with three nozzle, find (i) The diameter of jet (ii) Total flow rate and the force exerted by a jet on the bucketsName and briefly describe the differences between the two basic types of dynamic turbine.Explain the working of a Delaval turbine with neat sketches.