subject
Engineering, 06.11.2019 21:31 nickyacoub65

Consider a proposed offshore wind farm composed of 106 siemens direct drive wind turbines each with a rated capacity of 6.00 mw. each wind turbine has a rotor diameter of 154 meters, an effectiveness of 67.5%, and a generator efficiency of 96.0%. the array efficiency is 80.0%. it is estimated that the wind farm will generate 2500 gwh of electricity annually. each wind turbine requires 400 hours of maintenance annually. the density of air is 1.225 kg/m3.

a. what is the coefficient of performance for the turbine rotor (%)

b. what is the overall efficiency of the proposed wind farm (%)?

c. what is the capacity factor of the proposed wind farm (%)?

d. what is the swept area of the proposed wind turbines (m2)?

e. what is the rated wind speed for the proposed wind turbines (m/s)?

f. what is the availability of the proposed wind turbines (%)?

ansver
Answers: 1

Another question on Engineering

question
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
question
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
question
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
question
Engineering, 04.07.2019 18:20
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
You know the right answer?
Consider a proposed offshore wind farm composed of 106 siemens direct drive wind turbines each with...
Questions
question
Mathematics, 31.01.2020 23:47
Questions on the website: 13722363