What is Wind and Wind Energy?

CategoriesWind Turbines

What is Wind?

Wind is  simply  air  in  motion.  It  is  caused  by  the  uneven  heating  of  the  earth’s  surface  by  radiant  energy  from  the  sun.  Since  the  earth’s  surface  is  made  of  very  different  types  of  land  and  water,  it  absorbs  the  sun’s  energy  at  different  rates.  Water  usually  does  not  heat  or  cool as quickly as land because of its physical properties. An  ideal  situation  for  the  formation  of  local  wind is  an  area  where  land  and  water  meet. 

During  the  day,  the  air  above  the  land  heats  up more quickly than the air above water. The warm air over the land  expands, becomes less dense and rises.  The  heavier,  denser,  cool  air  over  the  water  flows  in  to  take  its  place,  creating  wind.  I n  the  same  way,  the  atmospher ic  winds  that  circle  the  ear th  are  created  because  the  land  near  the  equator  is  heated  more by the sun than land near the North and South Poles. Today,  people  use  wind  energy to  make  electricity.  Wind  is  called  a  renewable  energy  source  because  the  wind  will  blow  as  long  as  the  sun shines.

Wind Direction

A  weather  vane,  or  wind vane,  is  used  to  show  the  direction  of  the  wind.  A  wind  vane  points  toward  the  source  of  the  wind.  Wind  direction  is  reported  as  the  direction  from  which  the  wind  blows ,  not  the  direction  toward  which  the  wind  moves.  A  north  wind  blows  from the north toward the south.

Wind Production

Every year, wind produces only a small amount of the electricit y this  country  uses,  but  the  amount  is  growing  every  year. 

One  reason  wind  farms  don’t  produce  more  electricity  is  that  they  can  only  run  when  the  wind  is  blowing  at  certain  speeds.  In  most  places  with  wind  farms,  the  wind  is  only  optimum  for  producing  electricit y  about  three -fourths  of  the  time.  ( That  means  most  turbines run  18  hours out of 24.)

Leave a Reply

Your email address will not be published. Required fields are marked *

We use cookies in order to give you the best possible experience on our website. By continuing to use this site, you agree to our use of cookies.
Privacy Policy