A wind turbine produces 44.504 kW power from flowing at 27.436 m/s. Calculate the blade diameter...
A wind turbine produces 44.504 kW power from flowing at 27.436 m/s. Calculate the blade diameter (in m) needed to harvest this power output (density of air = 1.25 kg/m3)
Homework Answers
Add Answer to:
A wind turbine produces 44.504 kW power from flowing at 27.436
m/s. Calculate the blade diameter...
A wind turbine with a blade diameter of 50 m, tower height of 60 m and...
A wind turbine with a blade diameter of 50 m, tower height of 60 m and wind speed of 10 m/s at ground level and the air density is 1.23 kg/m3 is operating. Calculate the actual power that can be harnessed from this wind turbine.
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...
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...
21. Determine the power output of a wind turbine whose blades are 12 m in diameter...
21. Determine the power output of a wind turbine whose blades are 12 m in diameter and when the wind speed is 6 m/s, the air density at sea level is about 1.2 kg/m3, and the maximum nower coefficient for this wind turbine is 0.35.
(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...
A very large wind turbine is used to extract power from the wind. The turbine has...
A very large wind turbine is used to extract power from the wind. The turbine has a diameter of 120 meters. What is the maximum power this turbine can extract from the wind. Assume a wind speed of 10 m/s and the density of air is 1.2 kg/m3. 3.40 MW 6.80 MW 4.02 MW 7.52 MW
QUESTION 5 A wind turbine is operating in a wind of 10 m/s - that has a density of 1.2 kg/m3. The diameter of the w...
QUESTION 5 A wind turbine is operating in a wind of 10 m/s - that has a density of 1.2 kg/m3. The diameter of the windmill is 4 m. The constant pressure_ (atmospheric) streamline passing the turbine blade tip has a diameter of 3 m upstream of the wind turbine and 4.5 downstream. Assume that the velocity distributions are uniform and the air is incompressible. Determine the thrust due to the wind on the wind turbine. (5 marks)
The available power in a stream of wind of the same cross-sectional area as the wind...
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...
Problem 2 A three-blade wind turbine captures 1.8 MW from wind moving horizontally with respect to...
Problem 2 A three-blade wind turbine captures 1.8 MW from wind moving horizontally with respect to the plane. If the upwind speed is 16 m/s and the coefficient of performance is 25%, compute the length of the blade. Assume the density of air is 1 kg/m3.
Questions. At a certain location, wind is blowing steadily at 10 m/s. a) Determine the mechanical...
Questions. At a certain location, wind is blowing steadily at 10 m/s. a) Determine the mechanical (kinetic) energy of air per unit mass of a wind v turbine with 60-m-diameter blades at that location. b) Determine the mass flow rate of a wind turbine with 60-m-diameter blades at that location. Take the air density to be 1.25 kg/m². c) Calculate the specific volume of air. Take the air density to be 1.25 kg/m3. Wind Wind turbine Wind
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...
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...
21. Determine the power output of a wind turbine whose blades are 12 m in diameter and when the wind speed is 6 m/s, the air density at sea level is about 1.2 kg/m3, and the maximum nower coefficient for this wind turbine is 0.35.
QUESTION 5 A wind turbine is operating in a wind of 10 m/s - that has a density of 1.2 kg/m3. The diameter of the windmill is 4 m. The constant pressure_ (atmospheric) streamline passing the turbine blade tip has a diameter of 3 m upstream of the wind turbine and 4.5 downstream. Assume that the velocity distributions are uniform and the air is incompressible. Determine the thrust due to the wind on the wind turbine. (5 marks)
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...
Problem 2 A three-blade wind turbine captures 1.8 MW from wind moving horizontally with respect to the plane. If the upwind speed is 16 m/s and the coefficient of performance is 25%, compute the length of the blade. Assume the density of air is 1 kg/m3.
Questions. At a certain location, wind is blowing steadily at 10 m/s. a) Determine the mechanical (kinetic) energy of air per unit mass of a wind v turbine with 60-m-diameter blades at that location. b) Determine the mass flow rate of a wind turbine with 60-m-diameter blades at that location. Take the air density to be 1.25 kg/m². c) Calculate the specific volume of air. Take the air density to be 1.25 kg/m3. Wind Wind turbine Wind
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago