For determining power extracted from wind by wind turbine we have to assume an air duct as shown in the figure. It is also assumed that the velocity of the wind at the inlet of the duct is V1 and velocity of air at the outlet of the duct is V2. Say, mass m of the air is passed through this imaginary duct per second.Now due to this mass the kinetic energy of wind at the inlet of the duct is,Similarly, due to this mass the kinetic energy of wind at the outlet of the duct is,Hence, the kinetic ener

For determining power extracted from wind by wind turbine we have to assume an air duct as shown in the figure. It is also assumed that the velocity of the wind at the inlet of the duct is V1 and velocity of air at the outlet of the duct is V2. Say, mass m of the air is passed through this imaginary duct per second.Now due to this mass the kinetic energy of wind at the inlet of the duct is,Similarly, due to this mass the kinetic energy of wind at the outlet of the duct is,Hence, the kinetic ener

How Does Wind Turbine Work?There is an air turbine of large blades attached on the top of a supporting tower of sufficient height. When wind strikes on the turbine blades, the turbine rotates due to the design and alignment of rotor blades. The shaft of the turbine is coupled with an electrical generator. The output of the generator is collected through electric power cables.Working of Wind TurbineWhen the wind strikes the rotor blades, blades start rotating. The turbine rotor is connected to a

Major Parts of Wind TurbineTower of Wind TurbineTower is very crucial part of wind turbine that supports all the other parts. It not only supports the turbine but raises the turbine to sufficient height so that its blades tips would be at safe height during rotation. Not only that, we have to maintain the height of the tower, so that it can get sufficiently strong wind. The height of tower ultimately depends on the power capacity of wind turbines. The tower of the turbines in commercial wind pow

Wind energy simply means kinetic energy of air in motion. Air flows on the earth due to uneven heating of the earth surface by radiant energy from the sun.There are many places on the earth where the wind always presents. As the wind is naturally available mechanical energy, we can use this wind to rotate generators to produce electricity. Basically generating electricity by rotating generators with the help of wind is known as wind energy electricity generation or simply wind power generation o

Wind energy is a renewable and clean source of power that can reduce greenhouse gas emissions and fossil fuel dependence. Wind turbines are machines that convert the kinetic energy of the wind into electrical energy. There are two main types of wind turbines based on the orientation of their axis: horizontal and vertical.What is a Horizontal Axis Wind Turbine?A horizontal axis wind turbine (HAWT) is defined as a wind turbine that has a horizontal or parallel axis of rotation with respect to the

Solar Energy SystemSolar energy is the light and radiant heat from the Sun that control Earth’s climate and weather and protract life. It is a renewable source of energy and originates with the thermonuclear process that transfers about 650,000,000 tons of hydrogen to helium per second. This action produces lots of heat and electromagnetic radiation. The produced heat remains in the sun and is helpful in upholding the thermonuclear reaction and electromagnetic radiation together with visible, in

A solar lantern is well-known example portable stand-alone solar electric system. It consists of all necessary components required for a standalone solar electric system in a single casing except the solar PV module. It consists mainly an electric lamp, a battery and an electronic control circuit in a single casing. The solar PV module is the separated part of the lantern. We have to connect the solar PV module to the battery terminals of solar lantern for charging purpose. Nowadays, we use sola

A single solar cell cannot provide required useful output. So to increase output power level of a PV system, it is required to connect number of such PV solar cells. A solar module is normally series connected sufficient number of solar cells to provide required standard output voltage and power. One solar module can be rated from 3 watts to 300 watts. The solar modules or PV modules are commercially available basic building block of a solar electric power generation system.Actually a single sol

Solar cell is the basic unit of solar energy generation system where electrical energy is extracted directly from light energy without any intermediate process. The working of a solar cell solely depends upon its photovoltaic effect hence a solar cell also known as photovoltaic cell. A solar cell is basically a semiconductor device. The solar cell produce electricity while light strikes on it and the voltage or potential difference established across the terminals of the cell is fixed to 0.5 vol