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Copy of Alternative energy

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Helen Yevtushenko

on 8 January 2016

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Transcript of Copy of Alternative energy

Alternative energy is energy provided from sources other than the three fossil fuels: coal, oil, and natural gas. Alternative sources of energy include nuclear power, solar power, wind power, water power, and geothermal energy, among others.
Alternative Energy Sources
Solar energy is generating of electricity from the sun. It is split up into two types, thermal and electric energy. These two subgroups mean that they heat up homes (and water) and generate electricity respectively.

Algae fuel
Biological Hydrogen Production
Hydrogen gas is a completely clean burning fuel; its only by-product is water. It also contains relatively high amount of energy compared with other fuels due to its chemical structure.

2H2 + O2 → 2H2O + High Energy

High Energy + 2H2O → 2H2 + O2
Alternative Energy
The common definition for this tern is that it is an overall term used to refer to any source of usable energy intended to replace fuel sources, and in modern times, without the consequences of pollution or greenhouse gas emissions.
The term “alternative” in this case presupposes the current set of energy technologies against which “alternative energies” are compared. As such, the list of energy technologies excluded is an indicator of which problems the alternative technologies are intended to address. Controversies regarding dominant sources of energy and alternatives to them have a long history, ever since fire was discovered for a matter of fact. The nature of what is regarded as alternative energy sources have considerably changed over time, as with the technologies that we use to extract and utilize them. Currently, in this modern day and age, due to the wide variety of energy choices and differing goals and agenda’s of their advocates, defining some energy types as “alternative” has become highly controversial.
Solar Energy
Wind Energy

Wind energy is generating of electricity from the wind.

Geothermal Energy

Geothermal energy is using hot water or steam from the Earth’s interior for heating buildings or electricity generation.

Biofuel and ethanol are plant-derived substitutes of gasoline for powering vehicles.
Biofuel and ethanol

Hydrogen is used as clean fuel for airplanes, spaceships, and vehicles.
Algae fuel is a type of biofuel that is derived from algae. During photosynthesis, algae and other photosynthetic organisms capture carbon dioxide and sunlight and convert it into oxygen and biomass. The benefits of algal biofuel are that it can be produced industrially, thereby obviating the use of arable land and food crops (such as soy, palm, and canola), and that it has a very high oil yield as compared to all other sources of biofuel.

Tidal and wave energy are similar to wind in that they utilize turbines, however in this case they are placed under water and are turned by the currents running through the water.
Tidal and Wave Energy

Biogas digestion deals with harnessing the methane gas that is released when waste breaks down. This gas can be retrieved from garbage or sewage systems. Biogas digesters are used to process methane gas by having bacteria break down biomass in an anaerobic environment. The methane gas that is collected and refined can be used as an energy source for various products.
Biogas Digestion
This requires a high-energy input, making commercial hydrogen very inefficient. Use of a biological vector as a means to split water, and therefore produce hydrogen gas, would allow for the only energy input to be solar radiation. Biological vectors can include bacteria or more commonly algae. This process is known as biological hydrogen production. It requires the use of single celled organisms to create hydrogen gas through fermentation. Without the presence of oxygen, also known as an anaerobic environment, regular cellular respiration cannot take place and a process known as fermentation takes over. A major by-product of this process is hydrogen gas. If we could implement this on a large scale, then we could take sunlight, nutrients and water and create hydrogen gas to be used as a dense source of energy. Large-scale production has proven difficult.
Energy conservation plays an extremely important role in reducing unnecessary energy consumption. Improving energy efficiency is the best way to meet energy demands without adding to air and water pollution. Designing gas-saving automobiles, using fluorescent lightbulbs, recycling, raising the setting for house air conditioners, improving the efficiency of appliances, and properly insulating buildings are some of the ways energy can be conserved.

The geographical position and climatic conditions of Belarus are not favorable for the use of such alternative sources as wind, solar or tidal energy.
Still, we believe it is possible to find a way out and suggest another reasonable alternative. Unfortunately, in our country there is no widely used alternative energy source. It can only be found in some scientific labs.
However, Wind and Solar energy are the most likely alternative energy sources to be used in Colorado. A lot of people in Boulder, Colorado use solar energy and wind power already. Many homes have solar panels so they can save money on their energy bills and cut down on pollution.
There are many wind turbines in Colorado. The turbines have been producing more
energy in Colorado in the last few years. People view wind energy as more
environmentally friendly than fracking.

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