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)

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)

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter10: Wind Energy

Section: Chapter Questions

Problem 5P

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Concept explainers

Wind Energy

Wind energy is a renewable energy source that is used to generate electricity by wind power. The term, wind power, means utilization of kinetic energy of wind to generate electricity. Wind energy is termed renewable source energy because it can never be exhausted. There are other renewable energy sources, such as solar energy, geothermal energy, hydropower energy, and so on. All of them contribute to power the thermal energy stations to generate electricity.

Question

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 10^oC 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)

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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