renewable energy Flashcards
1
Q
optimal wind speed for a maximum power generation
A
50 km/h ~> 1MW
2
Q
Composition of horizontal wind turbine (4)
A
- blade pitch system
- yaw system
- gearbox
- generator
3
Q
cons of horizontal wind turbine
A
- sensitive to wind direction change
- more complex and more expensive
4
Q
pros of horizontal wind turbine
A
- blades are usually already built for an optimal generation
5
Q
Composition of vertical wind turbine (2)
A
- Gearbox
-Generator
6
Q
cons of a vertical wind turbine
A
- a new technology, not experts in the system yet
7
Q
pros of a vertical wind turbine
A
- insensitive to wind direction change
- more simple structure and cheaper
8
Q
onshore wind turbine (2019)
A
- specific power ~> 221 W/m²
- hub height ~> 89 m
- rotor diameter ~> 120 m
- capacity ~> 2,5 MW
9
Q
offshore wind turbine (2019)
A
- specific power ~> 340 W/m²
- hub height ~> 103 m
- rotor diameter ~> 150 m
- capacity ~> 6 MW
10
Q
onshore wind turbine (2035)
A
- specific power ~> 231 W/m²
- hub height ~> 130 m
- rotor diameter ~> 174 m
- capacity ~> 5,5 MW
11
Q
offshore wind turbine (2035)
A
- specific power ~> 346 W/m²
- hub height ~> 151 m
- rotor diameter ~> 250 m
- capacity ~> 17 MW
