The rated output power for a turbine model at 15 m/s is 3 MW. The rotor...
2. A wind turbine has the maximum power output at the rated speed of 12 m/s and a rotor diameter of 82 meters. The cut-in and cut-out speeds for this type of wind turbine are 4 m/s and 23 m/s, respectively. The table below shows the annual wind data near a potential site for setting up a wind farm using this type of wind turbine and the power coefficient of the wind turbine at the specific wind speed. The air...
What is the power coefficient for the Vestas V52-850 kW wind turbine at rated conditions? Rated capacity (kW) 850 Cut-in speed (m/s) 4 Cut-out speed (m/s) 25 Rated wind speed (m/s) 16 Rotor diameter 52 Swept area (m^2) 224 Rotor speed (rpm) 14-31.4
There is a wind turbine close to the shoreline. The turbine capacity is 3 MW, the rotor diameter is 90 meters, and tower height is 110 meter. The Cp is 43.7%. The yearly average wind speed at 10 m is 5.5 m/s. There is a potential to move the machine to a 120 meter tower. How much power is in wind at 110 & 120m height at the site? (Use the power law for wind speed calculation)
Consider a 1 MW, 50 m diameter horizontal axis, fixed wind turbine operating at a wind speed of 12 m/s. 3 blades mounted on a cast iron hub drive a generator through a gearbox of overall ratio 1:50. The induction generated is connected directly to the 60 Hz network and keeps the high speed shaft at 1500 RPM. Ignoring all other loses, calculate CP, lamda, rotor tip speed, and torque on low and high sides of the shaft.
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 with a 30 m rotor diameter is mounted with its hub at 50 m above a ground surface characterised by shrubs. Assume the coefficient of friction is 0.3. Estimate the ratio of specific power in the wind at the highest point that a rotor blade tip reaches to the lowest point that it falls to.
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.
The available power in a stream of wind of the same cross-sectional area as the wind turbine can easily be shown to be Available power in watts P pU3 Td where U is the wind speed in m/s p is the density of air in kg/m d is the rotor diameter in m - a. If the temperature is 0°C, and the air density p at 0°C is 1.2754 kg/m', the available power is 225 kW, and the wind speed...
the power coefficient of a wind turbine having a rotational speed of 2.1 rad/sec. Assume the wind velocity is 12 m/s, the tip speed ratio 7.45, the air density 1.21 kg/m3 and the mechanical power extracted by wind turbine 2.5 MW?
A wind-turbine has a propeller radius of 30 m, rated speed of 10 m/s and 30% efficiency at the rated speed. a) Calculate the rated power for this wind turbine. (air density is 1.2 kg/m). b) If this turbine produces 2 GW-h energy in one year, what is its capacity factor?