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The benefits and drawbacks of locating, using, and maintaini

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Isabelle Klein

on 6 June 2014

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Transcript of The benefits and drawbacks of locating, using, and maintaini

The benefits and drawbacks of locating, using, and maintaining geothermal energy stations in locations worldwide.
1. The first advantage of using geothermal heat to power a power station is that geothermal fields produce only about one-sixth of the carbon dioxide that a relatively clean natural-gas-fueled power plant produces
2. It's also relatively inexpensive; savings from direct use can be as much as 80 percent over fossil fuels.
3. No fuel is used to generate the power, which in return, means the running costs for the plants are very low as there are no costs for purchasing, transporting, or cleaning up of fuels you may consider purchasing to generate the power
4. Unlike solar and wind energy, geothermal energy is always available, 365 days a year.
5. The cost of the land to build a geothermal power plant on, is usually less expensive than if you were planning to construct an; oil, gas, coal, or nuclear power plant. The main reason for this is land space, as geothermal plants take up very little room, so you don't need to purchase a larger area of land. Another factor that comes into this is that because geothermal energy is very clean, you may receive tax cuts, and/or no environmental bills or quotas to comply with the countries carbon emission scheme
6. It can be extracted without burning a fossil fuel such as coal, gas, or oil
Benefits
Intro
Geothermal energy has been used for thousands of years in some countries for cooking and heating. It is simply power derived from the Earth's internal heat.This thermal energy is contained in the rock and fluids beneath Earth's crust. It can be found from shallow ground to several miles below the surface, and even farther down to the extremely hot molten rock called magma. There are three types of geothermal power plants: dry steam, flash, and binary. Dry steam, the oldest geothermal technology, takes steam out of fractures in the ground and uses it to directly drive a turbine. Flash plants pull deep, high-pressure hot water into cooler, low-pressure water. The steam that results from this process is used to drive the turbine. In binary plants, the hot water is passed by a secondary fluid with a much lower boiling point than water. This causes the secondary fluid to turn to vapor, which then drives a turbine. Most geothermal power plants in the future will be binary plants. Geothermal energy is generated in over 20 countries. The United States is the world's largest producer, and the largest geothermal development in the world is The Geysers north of San Francisco in California
1. The main concern is the release of hydrogen sulfide, a gas that smells like rotten egg at low concentrations.
2. Can Run Out Of Steam : Geothermal sites can run out of steam over a period of time due to drop in temperature or if too much water is injected to cool the rocks and this may result huge loss for the companies which have invested heavily in these plants. Due to this factor, companies have to do extensive initial research before setting up the plant.
3. Disposal of some geothermal fluids, which may contain low levels of toxic materials.
4. High Installation Costs : To get geothermal energy, requires installation of power plants, to get steam from deep within the earth and this require huge one time investment and require to hire a certified installer and skilled staff needs to be recruited and relocated to plant location. Moreover, electricity towers, stations need to set up to move the power from geothermal plant to consumer Drawbacks
5. It is not able to be produced everywhere
6. May Release Harmful Gases : Geothermal sites may contain some poisonous gases and they can escape deep within the earth, through the holes drilled by the constructors. The geothermal plant must therefore be capable enough to contain these harmful and toxic gases.
Drawbacks
Geological Events
Conclusion
Works Cited
http://geo-energy.org/basics.aspx
http://www.dougrye.com/advantages-disadvantages-geothermal-energy.html
https://www.youtube.com/watch?feature=player_embedded&v=3n9dSZXvo2Q1
Geothermal energy can be very helpful or hurtful depending on how one looks at the situation. Some of the advantages could be that geothermal fields produce only about one-sixth of the carbon dioxide that a relatively clean natural-gas-fueled power plant produces. Also that it is relatively inexpensive; savings from direct use can be as much as 80 percent over fossil fuels. However, if one were to look at the drawbacks then they would see that geothermal sites may contain some poisonous gases and they can escape deep within the earth, through the holes drilled by the constructors. The geothermal plant must therefore be capable enough to contain these harmful and toxic gases. They would also see that geothermal sites can run out of steam over a period of time due to drop in temperature or if too much water is injected to cool the rocks and this may result huge loss for the companies which have invested heavily in these plants. Due to this factor, companies have to do extensive initial research before setting up the plant. Personally I think that depending on what the energy will be used for determines if using geothermal energy is a good idea or not. If the energy will be used for a specific project that requires a great deal of energy and won’t be around for so long that the plant will run out of steam, then it could be considered a good idea. However, if one was to just use the geothermal energy to heats homes and for other generic things, I do not think that they should use it. I believe this because they will eventually run out of steam and just for small daily needs it would not be worth the money. Of course there are exceptions if geothermal energy is the only option for those living in a certain area.
Multimedia
Multimedia
KenGen workers test samples of condensed steam at the Olkaria geothermal plant near Naivasha, Kenya, in June 2008.
Geothermal is recognized by the United States Environmental Protection Agency as the most environmentally-safe, cost effective heating and cooling system on the market. Installing a geothermal system is equivalent to planting 750 trees or taking 2 cars off the road.
Geothermal sites may contain some poisonous gases and they can escape deep within the earth, through the holes drilled by the constructors. The geothermal plant must therefore be capable enough to contain these harmful and toxic gases.
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