Tags:
1. Sep 15, 2015

### TrisL

1. The problem statement, all variables and given/known data
At a certain location, wind is blowing steadily at 10m/s . Determine the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 60m diameter blades at the location. Density of air is 1.25kgm-3. ( ans : 0.05kJ/kg, 1770kW )

2. Relevant equations

3. The attempt at a solution
I'm seriously bad at physics and I totally have no idea at all in this question, so there is no attempt at all. Please help me.

2. Sep 15, 2015

### haruspex

What happens to a wind when it passes through a turbine? Where does the energy come from that drives the turbine?

3. Sep 15, 2015

### TrisL

Hi haruspex, the question given is just like this.

4. Sep 15, 2015

### haruspex

5. Sep 15, 2015

### TrisL

The wind pass through the turbine just like that isn't it? The energy that drives the turbine, mechanical energy?

6. Sep 15, 2015

### haruspex

Is the wind exactly the same after it has passed through? Yes, it's mechanical energy, but what form does that take in a wind?

7. Sep 15, 2015

### TrisL

The velocity of the wind changed? Hmmm.... kinetic energy is the answer?