study on alternative energy resources

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Study On Alternative Energy Resources And Its many uses01

Solar energy is radiant light and heat from the sun harnessed using a range of ever-evolving technologies such as solar heating , solar photovoltaic's , solar thermal energy , solar architecture and artificial photosynthesis. SOLAR ENERGY02

There are currently three common ways to generate power from sunlight: You can use solar cells to directly generate electricity from sunlight. These cells get a little better and a little cheaper every year, but they still are fairly expensive on a cost per watt basis. You can use the sun to generate heat, use the heat to create steam and use the steam to turn a generator that produces electricity. You can use sunlight to create heat that forces air to rise up a tower and then use the resulting wind in the tower to drive wind turbines, as shown in How solar towers work

Solar Power generation03

Picture :solar tower04

Solar panels (PV) are completely solid state and require no maintenance.Solar panels have a long lifespan of 20-30 years.They emit neither pollutants nor radioactive waste so they can safely be used indoors.Solar technology requires no fuels.Photovoltaic solar technology produces neither noise nor vibration.

Advantages of Solar Power System05

The manufacturing cost of solar technology is high.Solar technology in general is expensive to install. The cost of electricity from central solar power plants is high. Solar panel efficiency is usually low.

Disadvantages of Solar Power system


Power plantsHomesCommercial use Power pumpSwimming poolsSolar lightingSolar carsRemote applicationApplications of solar energy 07

Photovoltaic systems convert solar energy directly into electricity. They have efficiencies near 10%.


PhotovoltaicThe PV project has 4 components:* Array* Controller* Battery* Load


Generates free energy from the sun.Has no moving parts.Non-polluting energy.Photovoltaic (PV) cells are modular. Systems have a long life & durability. Cells last 25-30 years. PV cells make no noise and give off no exhaust.

Advantages of Photovoltaic Solar Power 10

Selective Emitter Cell (SEC)Emitter wrap- through cells (EWC)Thin Film PhotovoltaicSingle Crystal Silicon Cells

4 types of PV cells11

Cover GlassTransparent AdhesiveAnti-reflective CoatingFront ContactN-Type Semiconductor LayerP-Type Semiconductor LayerBack ContactComponents of a Solar Cell12

The solar panel mounting arms are made from durable aluminum.Key Features* Easy to Install * Anodized Aluminum * Solar Panel Mounting Arm * Mounting Bracket * 2 - Stainless Steel Straps * 2- Optional Mounting Screws * Hardware Roof Solar Mounting Pole Solar Mounting Side of Pole Solar Mounting Top of Pole Solar Mounting Drill Free Solar Mounting

Solar Panel Mounting Arm Kit13

Wind is used to turn wind turbines, which turns a generator, to make electricity. FOR ENERGY PRODUCTION: 1.Need lots of open land. least 20kmph wind velocity is needed.3. lots of manpower for setting up wind farm and maintenance

Wind energy14

GENERAL PROBLEMS 1.storms 2.uprooting of trees 3.cause dust storms etc.

Problems of Wind Energy15


1. The use of wind turbines does not generate pollution or radioactive waste like most other forms of electricity generation do.

2. Wind can also generate power for large numbers of people, using larger turbines connected to an electrical grid.

3. Another one of its advantages is that this type of power generation does not consume any non-renewable resources, like coal, natural gas, or oil


1. Another of the disadvantages is that they can be damaged in thunderstorms.

2. The blades of wind turbines can hit birds who attempt to fly between them.

3. Some turbines produce noise.Advantages & Disadvantages of wind energy16

1.commercial use 2.pharmaceutical use 3.residential use

Uses of wind Energy


Biomass is natural energy. Common natural materials such as wood, grass, animal (or human) waste and natural gases are all examples of biomass.


1. Trees (wood fuels, twigs, leaves, plant residues) 2. Agricultural Residues (paddy husk, bran, jute sticketc.) and 3. Livestock (animal dung).

The main sources of biomass fuels19

High cycle efficiency. Very high turbine efficiency (up to 90%)Low mechanical stress of the turbine, due to low peripheral speedVery long operational life of the machine.No water treatment system is necessary

Application of Biomass20

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