Harnessing Wind Energy :: physics power energy green environment clean

Living in Rural Alaska is very expensive because of its isolated location. It would be even more expensive if zip, mail service, and other services were not subsidized by the state of Alaska. In the late seventies and aboriginal eighties, the state of Alaska looked for ways to cut the high cost of subsidizing diesel fire for generating electrical power to rural Alaska. It was during this time that wrap energy was interpreted into consideration as a source of electrical power.The earliest cognise uses of wrap up power date back to 3000 BC, when people used wind to sail ships. Approximately 4000 years later, windmills were used in Europe to squash tobacco, wheat, and other grains. Later, in the 1700s, windmills were then used to pump water. It was not until the 1900s that wind mills were used for generating electric power. In the United States, windmills were used previous to widespead electrical distribution.The generation of wind brush aside be traced back to solar energy. It is ultimately a renewable and clean energy source. This is what makes it attractive to more as a source of energy for power plants. breaking wind is created as a result of pressure differences in the atmosphere which is caused by temperature differences of give out solar energy. Other factors that contribute to the flow of air (wind) is the rotation of the earth, and its terrain. We could transport more wind over bodies of water since water provides less tube to wind than do objects on the surface of the earth.If wind is essentially free, wherefore dont we see more windmills? The reason is that wind doesnt blow whenever we need power. Wind energy can only be stored in batteries and much of the energy from wind can not be harnessed into useful energy. The overt also views wind generators as an eyesore on the landscape.Wind, initially is in the compliance of kinetic energy, thus it has the par 1/2mv2, where m is the mass, and v is velocity of the air. Using the fact that the m ass is able to the volume times the density, we can rewrite the equation for kinetic energy ask.e. = 1/2Vpv2, where V is the volume, and p is the density of air.Furthermore, the volume through a surface is equal to the area of the surface times the velocity of the air, times the time, thus the equation becomesk.e. = 1/2pv3At, where A is the area of the surface and t is the time.