What is hydro energy PPT?
Hydroelectricity generates electricity by harnessing the gravitational force of falling water. In 2006, hydroelectricity supplied around 20% of the world’s electricity. Most hydroelectric power stations use water held in dams to drive turbines and generators which turn mechanical energy into electrical energy.
What is hydropower project?
Hydro electricity is the conversion of the mechanical energy in flowing water into electricity. Hydro electricity is generated when the force of falling water from dams, rivers or waterfalls is used to turn turbines, which then drives generators that produce electricity.
What is the working principle of hydro power plant?
The water turbine changes the kinetic energy of the falling water into mechanical energy at the turbine shaft. In simple words, falling water spins the water turbine. The turbine drives the alternator coupled with it and converts mechanical energy into electrical energy.
What happens in a hydroelectric power station?
Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.
What type of energy is hydro?
Hydroelectric energy, also called hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity. People have used this force for millennia.
What are advantages of hydropower?
Hydropower provides benefits beyond electricity generation by providing flood control, irrigation support, and clean drinking water. Hydropower is affordable. Hydropower provides low-cost electricity and durability over time compared to other sources of energy.
What are 5 advantages of hydropower?
Advantages of hydroelectric energy
- Renewable. Hydroelectric energy is classified as a renewable energy source because it is powered by water, and water is a naturally replenishing resource.
- Low emissions.
- Reliable.
- Safe.
- Environmental consequences.
- Expensive to build.
- Drought potential.
- Limited reservoirs.
What are the two types of hydroelectricity?
There are two main types of hydropower turbines: reaction and impulse. The type of hydropower turbine selected for a project is based on the height of standing water—referred to as “head”—and the flow, or volume of water over time, at the site.
How old is hydro power?
Hydropower became an electricity source in the late 19th century, a few decades after British-American engineer James Francis developed the first modern water turbine. In 1882, the world’s first hydroelectric power plant began operating in the United States along the Fox River in Appleton, Wisconsin.
What are the advantages of hydro power plant?
Since the generation of electricity in hydropower plants is very quick, they can provide essential back-up power during major electricity outages. Hydropower is used to control flood, help in irrigation, and water supply. Hydropower plays a major role in reducing greenhouse gas emissions.
What are the advantages and disadvantages of hydro electric power?
Pros and cons of hydroelectric energy
| Pros | Cons |
|---|---|
| Renewable | Environmental consequences |
| Low emissions | Expensive to build |
| Reliable | Drought potential |
| Safe | Limited reserves |
Is water an energy source?
Energy from water is considered a renewable energy because it uses the Earth’s water cycle and gravitational pull to generate electricity.
Where does hydropower come from?
Hydroelectric power is produced with moving water Because the source of hydroelectric power is water, hydroelectric power plants are usually located on or near a water source. The volume of the water flow and the change in elevation-or fall, and often referred to as head -from one point to another determine the amount of available energy in moving water.
What is the history of hydropower?
Hydropower became an electricity source in the late 19th century, a few decades after British-American engineer James Francis developed the first modern water turbine. In 1882, the world’s first hydroelectric power plant began operating in the United States along the Fox River in Appleton , Wisconsin.
What is a hydro electric plant?
A typical hydroelectric plant is a system with three parts: a power plant where the electricity is produced, a dam that can be opened or closed to control water flow, and a reservoir where water is stored. The water behind the dam flows through an intake and pushes against blades in a turbine, causing them to turn.
What is small scale hydroelectric energy?
Small hydro is the development of hydroelectric power on a scale suitable for local community and industry, or to contribute to distributed generation in a regional electricity grid. Oct 22 2019