Fluid Mechanics : Energy and Power:An engineer is considering the development of a small wind turbine (D=1.25m) for home applications. The design wind speed is 15 mph(6.706m/s) at 10oC and 0.9 bar (90kPa). The efficiency of the turbine is 20%, that is 20% of the kinetic energy of the wind can be extracted. Estimate the power in watts that can be produced by the turbine.Hints:1) In the time interval delta t, the amount of mass that flows through the rotor is:    delta m = mdot delta t 2) The kinetic energy in the flow is:    (delta m V2/2)

Question
28 views

Fluid Mechanics : Energy and Power:

An engineer is considering the development of a small wind turbine (D=1.25m) for home applications. The design wind speed is 15 mph(6.706m/s) at 10oC and 0.9 bar (90kPa). The efficiency of the turbine is 20%, that is 20% of the kinetic energy of the wind can be extracted. Estimate the power in watts that can be produced by the turbine.

Hints:

1) In the time interval delta t, the amount of mass that flows through the rotor is:    delta m = mdot delta t

2) The kinetic energy in the flow is:    (delta m V2/2)

check_circle

Step 1

Given Information:

Step 2

We will have to find density using Ideal Gas Law:

Step 3

Now we will find the area ...

Want to see the full answer?

See Solution

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in