The rotor diameter of the wind turbine rotating at 20 rpm in winds of 30 km/h...
The rotor diameter of the wind turbine rotating at 20 rpm in winds of 30 km/h is 80 m. What is the annual revenue generated by wind turbines if 35% of the kinetic energy of the wind is converted into power,
(a) the power generated (kW),
(b) wing end speed (km/h)
(c) is supplied to the consumer at $0.06 kWh? At this time, the density of the air is 1.225 kg/m3.
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The rotor diameter of the wind turbine rotating at 20 rpm in
winds of 30 km/h...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
A wind turbine is rotating at 15 rpm under steady winds flowing through the turbine at...
A wind turbine is rotating at 15 rpm under steady winds flowing through the turbine at a rate of 43000 kg/s. The tip velocity of the turbine blade is measured to be 250 km/h. Assume 180 kW power is produced by the turbine and answer the questions that follow. Take the density of air to be 1.31 kg/m3 Determine the average velocity of the air. (You must provide an answer before moving to the next part.) The average velocity of...
8 blade turbine ,a wind speed of 36 km/h to pump water at the rate of...
8 blade turbine ,a wind speed of 36 km/h to pump water at the rate of 6m3/h, with a lift of 6m, efficiency pump 50% and efficiency rotor to the pump 80% , power coefficient 0.3 and the tip speed ratio is 1.0.Density of water 1000kg/m3, air 1.2kg/m3 and g = 9.81 m/s2. 1= the radius of the rotor (m) 2= the rotational speed of the rotor( rpm)
A 20-m/sec wind speed enters a two-bladed, high speed wind turbine .What should be the rotor...
A 20-m/sec wind speed enters a two-bladed, high speed wind turbine .What should be the rotor diameter of this turbine to attain power of 100 kW at power coefficient of 0.3? Also calculate the rotor speed and torque produced. Assume the density of Air 1.2 kg/m.
Wind rotor of a wind turbine has total inertia 4820000 kgm2. The rotor rotates at nominal...
Wind rotor of a wind turbine has total inertia 4820000 kgm2. The rotor rotates at nominal speed 17 rpm. The generator nominal power is 1.8 MW. What is the time needed to stop the rotating wind rotor using nominal generator torque? It is assumed, that no aerodynamic torque exists during the braking. (Give the answer of accuracy of at least three significant digits.) Kinetic energy Answer MJ Nominal torque of generator Answer kNm Required time Answer s
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative...
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative to the use of fossil fuels. Typically, wind causes the rotor of a turbine to turn, and a generator converts the rotational kinetic energy ofthe rotor into electricity. Power generated by a wind turbine (Ws) can be estimated from the density of the air (p), wind speed (u), and turbine rotor diameter (D) using the following formula лD? 1 W. ти* х п, where...
). A wind turbine in the hurricane region has not been destroyed by the storm. If boundary layer winds were approximat...
). A wind turbine in the hurricane region has not been destroyed by the storm. If boundary layer winds were approximately the same speed as that calculated in question 4, would this turbine be able to produce energy? Why or why not? b). Normally (i.e. not in a hurricane) this large turbine, which sweeps out an area of 7.5 m2, operates in typical local winds of 12 km/hr at an air density of 1.2 kg/m3. Roughly how much power would...
5. The three rotor blades of a wind turbine can be considered to be long thin...
5. The three rotor blades of a wind turbine can be considered to be long thin rods. Each of the rotor blades is 43 m long and has a mass of 60 Mg. The turbine is spinning at 20 rpm and is generating 2.8 MW of power. This problem DOES need to be written out for your portfolio. NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History nergy of the Determine the kinetic e turbine (include units with...
(4 points) A large wind turbine is used for electricity generation. The turbine has a blade...
(4 points) A large wind turbine is used for electricity generation. The turbine has a blade span diameter of 53 m and is installed in an area that has steady winds at 5.6 m/s. The efficiency of this wind turbine-generator is 34.8 %. The density of the air is 1.25 kgm3kgm3. What is the power generated from this windmill? If the blade span diameter is reduced by 33 %, the efficiency of the turbine-generator increases to 73.428 %. What is...
Problem 8 A wind turbine with a 60m diameter swept area is operating at an elevation of 600m, spinning at a TSR of 10, with ß-10°, at a Cp of 27.5%, in horizontal winds of 17 m/s, and generating...
Problem 8 A wind turbine with a 60m diameter swept area is operating at an elevation of 600m, spinning at a TSR of 10, with ß-10°, at a Cp of 27.5%, in horizontal winds of 17 m/s, and generating 2 Mw of power. What is the air density?
Problem 8 A wind turbine with a 60m diameter swept area is operating at an elevation of 600m, spinning at a TSR of 10, with ß-10°, at a Cp of 27.5%, in...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
A wind turbine is rotating at 15 rpm under steady winds flowing through the turbine at a rate of 43000 kg/s. The tip velocity of the turbine blade is measured to be 250 km/h. Assume 180 kW power is produced by the turbine and answer the questions that follow. Take the density of air to be 1.31 kg/m3 Determine the average velocity of the air. (You must provide an answer before moving to the next part.) The average velocity of...
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative to the use of fossil fuels. Typically, wind causes the rotor of a turbine to turn, and a generator converts the rotational kinetic energy ofthe rotor into electricity. Power generated by a wind turbine (Ws) can be estimated from the density of the air (p), wind speed (u), and turbine rotor diameter (D) using the following formula лD? 1 W. ти* х п, where...
5. The three rotor blades of a wind turbine can be considered to be long thin rods. Each of the rotor blades is 43 m long and has a mass of 60 Mg. The turbine is spinning at 20 rpm and is generating 2.8 MW of power. This problem DOES need to be written out for your portfolio. NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History nergy of the Determine the kinetic e turbine (include units with...
Problem 8 A wind turbine with a 60m diameter swept area is operating at an elevation of 600m, spinning at a TSR of 10, with ß-10°, at a Cp of 27.5%, in horizontal winds of 17 m/s, and generating 2 Mw of power. What is the air density?
Problem 8 A wind turbine with a 60m diameter swept area is operating at an elevation of 600m, spinning at a TSR of 10, with ß-10°, at a Cp of 27.5%, in...
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