The output power of a wind turbine is 500 kW. Its efficiency is 43 %. Take density of air as 1.12 3 2 kg/m. Area covered by blades is 3216.99 m. Find the velocity. Select one: a. 8.64 m/s b. 8.64 m /s C. 12 m/s d. 11 m/s
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- Pump efficiency= 97%Pump speed= 1848 rpmPump discharge= 172L/s of water to a height at 61 m.Determine the power output in kWA group of engineers is designing a new hydroturbine by scaling up an existing one. The existing turbine (turbine A) has diameter DA = 1.50 m, and spins at n.A = 150 rpm. At its best efficiency point, V.A = 162 m3 /s, HA = 90.0 m of water, and bhpA = 132 MW. The new turbine (turbine B) will spin at 120 rpm, and its net head will be HB = 110 m. Calculate the diameter of the new turbine such that it operates most efficiently, and calculate V.B and bhpB.A turbine extracts water from a 25 m high reservoir, if the flowrequirement is 10000 m3/hr, what is the generated power in kW ifthe efficiency is 75%?
- Three bladed type wind turbine with an area of 255 sq.m was installed in a windy cliff with 25 m/s velocity and 1.62 kg/m cold air density. what is the actual power if the efficiency of the turbine is 97.25%Explain the complete development from the first formula to the last for the change of internal energy.A group of engineers is designing a new hydroturbine by scaling up an existing one. The existing turbine (turbine A) has diameter DA = 1.50 m, and spins at n.A = 150 rpm. At its best efficiency point, V.A = 162 m3 /s, HA = 90.0 m of water, and bhpA = 132 MW. The new turbine (turbine B) will spin at 120 rpm, and its net head will be HB = 110 m. Calculate and compare the efficiency of the two turbines. They should be the same since we are assuming dynamic similarity. However, the larger turbine will actually be slightly more efficient than the smaller turbine. Use the Moody efficiency correction equation to predict the actual expected efficiency of the new turbine. Discuss.
- ..Consider a leather belt with the following given: width of 100 mm, thickness of 6.4 mm, velocity of 18.3 m/s. Which of the following is the centrifugal force across the belt? Note that the density of belt is approximately 974 kg/m3Group of answer choices 205 N 309 N 209 N 305 NPls show detailed solution Example 2.2A typical industrial-scale wind turbine has a peak efficiency of about 0.44 for a wind speed of 9 m·s−1. That is, it converts about 44% of the kinetic energy of the wind approaching it into usable electrical energy. The total air flow impinging on such a turbine with a rotor diameter of 43 m is about 15,000 kg·s−1 for the given wind speed. a) How much electrical energy is produced when 1 kg of air passes through the turbine?(b) What is the power output of the turbine?(c) If there is no heat transferred to the air, and if its temperature remains unchanged, what is its change in speed upon passing through the turbine?A pumped storage power plant with a head of 150 m, with a flow rate of 6 cms for power generation and pumping, and continuous operation for 8 hours each time. Try to find (1) the power output during power generation and the total daily power generation; (2) pumping water Hourly power and total daily power demand; (3) Pumped storage power plant efficiency; (4) Adjust the pool capacity? Assuming that the water loss is 8% of the total drop, the combined efficiency of the turbine and generator is 85%, and the efficiency of the pump is 65%.
- Water is being drained through a hole at the bottom of a tank at a velocity of 10 m/s. For a tank diameter of 1.18 m and a hole diameter of 5 cm, find the rate of change of the water level in the tank in m/hr.Q3. A new 187 MW hydropower station is to be built at a site where the available head is estimated at 307 m. The generators require the turbine to rotate at 17 rad/sec. The only available turbines are Francis turbines with KN (the non-dimensional parameter to classify turbine ) equal to 0.07 .Determine the number of turbines required.h. Thirty (30) liters/second of stream water must be pumped up a vertical height of 12 meters to irrigate a farm. If head loss in casing and pump results in 62% pump efficiency and the electric motor used has 91% efficiency, what horsepower rating should the motor have and how many kilowatts will it use while pumping?