Jump to content
Sign in to follow this  
  • entries
    31
  • comments
    20
  • views
    2,021

Physics of Wind Energy

Sign in to follow this  
jrwalther

180 views

The purpose of a wind turbine is to turn the kinetic energy of the wind into electrical energy.  This is the idea of most machines as energy can only be converted, it cannot be created or destroyed.  Like any moving mass, the kinetic energy is calculated through the equation K=1/2mv^2.  For calculating the kinetic energy in a wind turbine we would use the wind speed for velocity.  The mass would be the particular volume of air.  You can also find the power in the wind a turbine is using to generate its electrical energy.  To find the power you would use the equation P=1/2 x air density x area x wind speed^3 x time.This shows us that the power of wind is dependent on 3 variables.  We see that the area affects the power showing us that location of these wind turbines will actually play a role in how much power is generated while the others cannot be controlled.  

   Image result for wind turbine

Sign in to follow this  


1 Comment


Recommended Comments

I wonder how exactly the kinetic energy is converted into electrical energy. I understand that energy is conserved, but it amazes me how mechanical energy can become electrical energy. 

Wouldn't the kinetic energy which is converted into electrical energy be the kinetic energy of the spinning blades of the wind turbine, not of the wind itself?

Share this comment


Link to comment
Guest
Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

×
×
  • Create New...