renewable resources.pptx

WHAT IS RENEWABLE ENERGY?

Renewable energy is energy which comes from natural resources such as sunlight, wind, tides, biomass

Renewable energy is energy that is generated from natural processes that are continuously replenished. This includes sunlight, geothermal heat, wind, tides, water, and various forms of biomass. This energy cannot be exhausted and is constantly renewed.

Advantages and Disadvantages

ADVANTAGES DISADVANTAGES

It is renewable It requires less

maintainance It reduces the cost of

operationRenewable energy

products bring economic benefits to many regional areas

It is difficult to generate the quantities of electricity

Renewable energy often relies on the weather for its source of power

TYPES OF RENEWABLE ENERGY

Renewable energy sources are classified as Solar energy Wind energy Hydro energy Nuclear energy Biomass

SOLAR ENERGYSolar energy radiant light and heat from the sunTwo main types of solar energy systems are in

use today: photo voltaics, and thermal systems.

SOLAR ENERGYPhotovoltaic systems convert solar radiation to

electricity via a variety of methods. The most common approach is to use silicon panels, which generate an electrical current when light shines upon it.

SOLAR ROOF TILES

Roof mounted solar panels (Solar century)

Integrated solar tiles installed by Solar Century on a current development in Milton Keynes by English partnership and Bloor homes

APPLICATIONS OF SOLAR PANELS Battery chargers Water fountains and pumps Fans and ventilation Pool heaters and accessories Radios

WIND ENERGY Wind power is the conversion of wind energy into a

useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power, wind pumps for water pumping or drainage, or sails to propel ships

OFF SHORE WIND TURBINES

FEATURES OF OFF SHORE WIND TURBINES Larger average wind speed than onshore

Easier planning consent

Technical expertise exists from oil rig experience Suitable location

ADVANTAGES AND DISADVANTAGES OF WIND ENERGY

ADVANTAGES DISADVANTAGES

Wind energy is friendly to the surrounding environment

Wind turbines take up less space than the average power station.

Newer technologies are making the extraction of wind energy much more efficient.

Wind turbines are a great resource to generate energy in remote locations, such as mountain communities and remote countryside.

Another advantage of wind energy is that when combined with solar electricity, this energy source is great for developed and developing countries to provide a steady, reliable supply of electricity.

The main disadvantage regarding wind power is down to the winds unreliability factor.

Wind turbine construction can be very expensive and costly to surrounding wildlife during the build process.

HYDRO ENERGY Currently largest source of electricity from renewables. Needs guaranteed supply of water. Kinetic energy of water rotates turbines which generate

electricity.

HYDRO ENERGY

ADVANTAGES AND DISADVANTAGES OF HYDRO ENERGY

ADVANTAGES DISADVANTAGES

 Once a dam is constructed, electricity can be produced at a constant rate.

The lake that forms behind the dam can be used for water sports.

The lake's water can be used for irrigation purposes.

When in use, electricity produced by dam systems do not produce green house gases. They do not pollute the atmosphere

Dams are extremely expensive to build and must be built to a very high standard.

The high cost of dam construction means that they must operate for many decades to become profitable

NUCLEAR ENERGY The main use currently given nuclear energy is the

electric power generation. Nuclear power plants are responsible for this process.

Virtually all nuclear power plants in production using nuclear fission and nuclear fusion not currently feasible

despite being under development.

NUCLEAR ENERGY

ADVANTAGES AND DISADVANTAGES OF NUCLEAR ENERGY

ADVANTAGES DISADVANTAGES

Waste generated are much less reactive

In the reactor would avoid accidents by chain reactions that occur in fissions

It is dangerousGeneration of nuclear

waste and the difficulty to manage them as they take many years to lose its radio activity

APPLICATIONS Industrial applications Medical applications Applications in food-processing in the production of

new species Environmental applications

BIOMASS Biomass, is a renewable organic matter, and can include

biological material derived from living, or recently living organisms, such as wood, waste, and alcohol fuels.

BIOMASS