Wind

Question 1

Types of turbines

Answer 1

H.A.W.T.

V.A.W.T.

Question 2

Criteria of HAWT

Answer 2

Efficiency: higher 
Wind Direction: relatively constant 
Wind speed: high windspeeds required 
RPM: high RPM
Vibration: High
Noise Levels: High

Question 3

Criteria of VAWT

Answer 3

Efficiency: Lower
Wind Direction: Any direction
Wind Speed: Low wind speeds
RPM: Low
Vibration: Low
Noise Levels: Low

Question 4

What are the three parameters that determine wind energy available?

Answer 4

Air Density - (D=M/V)
Swept Area - (πr2)
Wind Velocity - (V=D/T)

Question 5

Available Wind Power for a HAWT

Answer 5

P = 0.5(roh)Av3