Tidal Current Turbines

Question 1

What are the main environmental concerns over underwater turbines?

Answer 1

1. Impact on the marine ecosystems during construction and deployment.
2. Damage to marine creatures from collision with rotors.
3. Interference with shipping and fishing.
4. Visual impact of transmission lines

Question 2

What is the expression for current velocity?

Answer 2

V= Vmax*sin(wt)

Where w=2*pi/T and T = period of cycle and T usually = 12.5 hours

Question 3

What is the expression for the power produced?

Answer 3

P=0.5CprhopiR^2V^3

Question 4

How long does the turbine produce no power for at neap tide?

Answer 4

2^