RenewablesEnergies

Index

➔ ¿What are the renewables energies?

➔ Solar energy

➔ Wind energy

➔ Seawater energy

➔ Wave energy

➔ Geothermal energy

➔ Bioenergy

➔ Fuel energy

➔ ¿What is Aerothermy?

➔ ¿How it works?

➔ ¿how it is possible to extract 77% of

the air?

➔ ¿What is the saving?

➔ Disadvantages

➔ ¿Why do not we use them at any time? ◆ Practical access to renewable

energies.◆ Price.◆ Technology.

Introduction

Energy is a key factor in the development of companies.

I want to look for different reasons of the delay in the development of non-polluting energies.

We are going to see somes news tecnologies to get better those energies too.

What are the renewable energies ?

➔ They are renewed.➔ They are environmentally sustainable.➔ 7 % of the energy consumed in Spain is renewable. ➔ Spain is the tenth world producer.➔ Kinds of energies:

◆ Solar.◆ Wind power.◆ Seewater energy.◆ Wave energy.◆ Geothermal energy.◆ Bioenergy.◆ Fuel energy.

Solar Energy

➔ Renewable energy➔ Obtain by the use of the electromagnetic radiation from sun. ➔ Many collectors:

◆ Photoelectric cells◆ Heliostats◆ Solar colectors

➔ Only 3% of the electricity production in Spain in 2016 is solar.

Wind Energy

➔ Renewable energy.➔ Obtained from the wind kinetic energy.➔ Generated by the effect of air currents.➔ At the end of 2016; 21.9 % capacity of the national electric system.

Seawater energy

➔ Renewable energy.➔ It is obtained with the tide.➔ Use of an alternator.➔ They want to create an i+d+i center on the coast of Santoña.➔ It could attend to the consumption of 2500 homes.

Wave Energy

➔ It obtain the electricity from the movement of waves.

➔ Maximum energy volume of 1.2 million MW per year.

Geothermal energy

➔ Renewable energy.➔ It is obtained from the natural heat

of the interior of the earth.

➔

Bioenergy

➔ Renewable energy.➔ Take advantage of organic and industrial matter.➔ Is taken from the waste of living things.➔ Respects the environment.

Biofuel Energy

➔ It is not a green energy.

➔ Mixture of organic substances

➔ It has negative and positive environmental impacts

➔ Many underdeveloped countries destroy their natural spaces to create biofuel plantations.

¿Why don't we use these energies always?

➔ Practical access to renewable energies➔ Price➔ Technology➔ The potential of this ecological energy is huge➔ They could cover half of the world's energy needs in 2050.

Practical access to renewable energies

➔ We can not save renewable energy sources

➔ If the wind does not blow or we are before a cloudy day the capacity to produce energy decreases.

➔ It represents a problem when taking advantage of renewable energies.

Prizes

➔ Fossil fuels are still cheaper sources of energy.

Technology

➔ A lot of energy is wasted

➔ The first step would be to make them cheaper

Conclusion

➔ Renewable sources produce clean and inexhaustible energy

➔ Could cover half of the world's energy needs by 2050

➔ They create jobs.

➔ Development and enactment are necessary.

Bibliography

➔ WIKIPEDIA

➔ http://ebasl.es/producir-energia-con-la-biomasa/

➔ http://www.fedebiocombustibles.com/nota-web-id-923.htmfederación nacional de biocombustibles de colombia

➔ http://www.gstriatum.com/energiasolar/blog/ ➔ https://www.toshiba-aire.es/que-es-aerotermia/#como

➔ PROPUESTA DIDÁCTICA PARA LA ENSEÑANZA DE LAS “ENERGÍAS RENOVABLES”, UNIVERSIDAD DE ALMERÍA

➔ Orialnitak➔ Presa hidráulica de alcántara