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glinbizzivic98

Geothermal Energy: Resource Exploration and Drilling Impacts - 1 views

teeic.anl.gov/...index.cfm

geothermal pollution

shared by glinbizzivic98 on 12 Mar 13 - No Cached
  • glinbizzivic98 on 12 Mar 13
     
    "Primary sources of noise associated with exploration include earth-moving equipment (related to road, well pad, and sump pit construction), vehicle traffic, seismic surveys, blasting, and drill rigoperations. Well drilling and testing activities are estimated to produce noise levels ranging from about 80 to 115 decibels at the site boundary. Air Quality Emissions generated during the exploration and drilling phase include exhaust from vehicular traffic and drill rigs, fugitive dust from traffic on paved and unpaved roads, and the release of geothermal fluid vapors (especially hydrogen sulfide, carbon dioxide, mercury, arsenic, and boron, if present in the reservoir). Initial exploration activities such as surveying and sampling would have minimal air quality impacts. Activities such as site clearing and grading, road construction, well pad development, sump pit construction, and the drilling of production and injection wells would have more intense exhaust-related emissions over a period of 1 to 5 years. Impacts would depend upon the amount, duration, location, and characteristics of the emissions and the meteorological conditions (e.g., wind speed and direction, precipitation, and relative humidity). Emissions during this phase would not have a measurable impact on climate change. State and local regulators may require permits and air monitoring programs. Cultural Resources Cultural resources could be impacted if additional roads or routes are developed across or within the historic landscape of a cultural resource. Additional roads could lead to increased surface and subsurface disturbance that could increase illegal collection and vandalism. The magnitude and extent of impacts would depend on the current state of the resources and their eligibility for the National Register of Historic Places. Drilling activities could result in long-term impacts on archeological artifacts and historic buildings or structures, if present. Surveys conducted during this phase
behanjos99

Energy Resources: Geothermal power - 0 views

www.darvill.clara.net/...geothermal.htm

co2 geothermal form

shared by behanjos99 on 12 Mar 13 - No Cached
  • The big problem is that there are not many places where you can build a geothermal power station. You need hot rocks of a suitable type, at a depth where we can drill down to them. The type of rock above is also important, it must be of a type that we can easily drill through. Sometimes a geothermal site may "run out of steam", perhaps for decades. Hazardous gases and minerals may come up from underground, and can be difficult to safely dispose of.
shinecal99

5. Effects on the environment - Geothermal energy - Te Ara Encyclopedia of New Zealand - 0 views

www.teara.govt.nz/...page-5

geothermal pollution

shared by shinecal99 on 12 Mar 13 - No Cached
  • shinecal99 on 12 Mar 13
     
    "Natural features such as hot springs, mud pools, sinter terraces, geysers, fumaroles (steam vents) and steaming ground can be easily, and irreparably, damaged by geothermal development."
faglejoh98

Renewable Energy Sources in the United States - 0 views

www.nationalatlas.gov/...a_energy.html

geothermal current

shared by faglejoh98 on 12 Mar 13 - No Cached
  • Flash steam plants are the most common type of geothermal power plants in operation today. They use extremely hot water (above 300 degrees F (149 degrees C)), which is pumped under high pressure to the generation equipment at the surface. The hot Estimated subterranean temperatures at a depth of 6 kilometers.water is vaporized and the vapor in turn drives turbines to generate electricity
  • While geothermal energy use is efficient, reliable, and environmentally friendly, it currently meets less than 1% of U.S. power needs.
  • While geothermal energy use is efficient, reliable, and environmentally friendly, it currently meets less than 1% of U.S. power needs.
behanjos99

Geothermal Energy | Energy and Global Climate Change in New England | US EP - 0 views

www.epa.gov/...re_geothermal.html

co2 geothermal

shared by behanjos99 on 11 Mar 13 - No Cached
  • The constant temperature of the Earth creates underground sources of heat, hot water and steam which become fuel to produce geothermal energy. People have used various forms of geothermal energy for hundreds of years; modern technology accesses these underground reservoirs, steam deposits and hot air by drilling, and then using the heat or hot water directly or using it to create power. Geothermal energy represents an enormous, underused power source that provides clean, renewable energy in virtually unlimited supply.
rodriguezjos99

Five Reasons Why Tidal Energy is the Wave of the Future - Green Living Ideas - 3 views

greenlivingideas.com/...ergy-is-the-wave-of-the-future

tide future co2 pollution

shared by rodriguezjos99 on 11 Mar 13 - No Cached
  • Green energy has never been more important than it is today with the looming threat of global warming. Every possible effort must be made to reverse the worldwide threat of climate change by subsidizing and switching to green energy. One often-overlooked source of clean, renewable energy comes not from solar, wind or geothermal power, but from the tides.
  • Tidal Energy is valuable to environmentalists because unlike fossil fuels the source of energy will not be depleted in the foreseeable future no matter how much energy is collected.
  • The collection of tidal energy is clean because it involves very little emission of carbon dioxide and other greenhouse gases
  • ...3 more annotations...
  • The pattern of tides is extremely stable and not strongly affected by weather conditions which suggests that it would be a very stable source of green energy.
  • Moving water can exert a much greater force on a turbine than wind which means the turbine can turn slowly and still produce a great deal of electricity. The slow and stable tidal forces are ideal parameters for engineering energy solutions. The fact that the turbines can be slow-moving makes it easier to avoid interfering with local ecosystems
  • While the initial cost of building tidal energy plants is high, the plants are expected to run for a very long time which will make them more cost-effective in the long run
  • rodriguezjos99 on 13 Mar 13
     
    "Five Reasons Why Tidal Energy is the Wave of the Future JANUARY 4, 2013 BY GUEST CONTRIBUTOR LEAVE A COMMENT Join GLI's 10,000 other followers on Twitter! Green energy has never been more important than it is today with the looming threat of global warming. Every possible effort must be made to reverse the worldwide threat of climate change by subsidizing and switching to green energy. One often-overlooked source of clean, renewable energy comes not from solar, wind or geothermal power, but from the tides. 1. Tidal Energy is Renewable Tidal Energy is valuable to environmentalists because unlike fossil fuels the source of energy will not be depleted in the foreseeable future no matter how much energy is collected. The gravitational relationship between the Earth and the moon is extremely stable in the long term just like solar, wind and geothermal energy. 2. Tidal Energy is Green The collection of tidal energy is clean because it involves very little emission of carbon dioxide and other greenhouse gases. However, the marine ecosystem is fragile and great care must be taken to avoid interfering with the lives of organisms that depend on the tide."
vanierfel98

How Green is Geothermal Energy?: Clean Energy, Renewable Energy, Sustainable Energy: Gr... - 1 views

www.greatgreenidea.com/reen-is-Geothermal-Energy.html

geothermal sustainable

shared by vanierfel98 on 11 Mar 13 - No Cached
  • It is an energy source that is considered renewable because both rain and heat in the earth replenish themselves naturally.
  • vanierfel98 on 11 Mar 13
     
    Geothermal energy is renewable
dpurdy

Geothermal Energy and Global Warming - 0 views

www.envirocitizen.org/...1008.html

geothermal sustainable

shared by dpurdy on 24 Mar 13 - No Cached
  • While geothermal energy itself is renewable, geothermal sites are not necessarily. An overworked site, or one with an excessively large energy plant, can quickly be depleted.
  • dpurdy on 24 Mar 13
     
    Great Point!!
jurektho99

Group items matching "history geothermal" in title, tags, annotations or url - qmstech2... - 0 views

groups.diigo.com/...search

shared by jurektho99 on 22 Oct 12 - No Cached
  • The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the Earth. We can recover this heat as steam or hot water and use it to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the heat is continuously produced inside the Earth. ... Cancel
dpurdy

Advantages of Geothermal Energy - What are the Advantages of Geothermal Energy? - 0 views

www.alternative-energy-resources.net/ages-of-geothermal-energy.html

geothermal energy advantage

shared by dpurdy on 03 Nov 11 - No Cached
  • Geothermal Energy produces no pollution. There are virtually no greenhouse gases given off. There is no pollution.
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coonari98

Geothermal electricity - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Geothermal_electricity

potential

shared by coonari98 on 07 Nov 11 - No Cached
  • Estimates of the electricity generating potential of geothermal energy vary from 35 to 2,000 GW.[2] Current worldwide installed capacity is 10,715 megawatts (MW), with the largest capacity in the United States (3,086 MW),[3] Philippines, and Indonesia.
  • coonari98 on 22 Oct 12
     
    " Dry steam plant Flash steam plant"
dpurdy

Inside story: Hot rocks and high hopes | The Economist - 0 views

www.economist.com/16909897

geothermal potential future

shared by dpurdy on 07 Nov 11 - Cached
  • Engineered geothermal systems (EGS) are based on a related principle, but they work even in parts of the world that are not volcanically active, by drilling thousands of metres underground to mimic the design of natural steam or hot-water reservoirs. Wells are bored and pathways are created inside hot rocks, into which cold water is injected. The water heats up as it circulates and is then brought back to the surface, where the heat is extracted to generate electricity. Because the Earth gets hotter the deeper you drill, EGS could expand the reach of geothermal power enormously and provide access to a virtually inexhaustible energy resource.
  • dpurdy on 07 Nov 11
     
    Future method is to drill very deep and inject water. THis will give us many more sites where we can develop geothermal energy.,
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dpurdy

Geothermal Energy Policy -- Energy Plan USA - 0 views

www.energyplanusa.com/geothermal_energy_plan.htm

geothermal potential future

shared by dpurdy on 08 Nov 11 - No Cached
  • According to the government, geothermal has the potential to supply the United States with 20% of our electricity needs.
  • The capital cost of geothermal development is expensive, however; 2/3rds are drilling costs. Yet as we overcome some of these technology challenges and make the process more standardized it is believed that geothermal can supply up to 20% of the United States electricity needs by 2050. But innovation and investment in initial steps need to happen now.
  • anonymous on 05 Oct 13
     
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wooddan99

Geothermal Could be Cheaper than Fossil Fuels with $3 Billion DOE Investment Says NYU S... - 0 views

cleantechnica.com/...-doe-investment-says-nyu-study

geothermal cost

shared by wooddan99 on 26 Sep 13 - No Cached
  • Geothermal could be cheaper than fossil fuels, according to a study just published at NYU Stern. Yet, strangely, geothermal received the fewest Federal DOE dollars invested in R&D over the last 8 years
nassiveradom00

Geothermal Energy Use on the Rise in U.S. | Fox News - 1 views

www.foxnews.com/...geothermal-energy-use-rise

geothermal

shared by nassiveradom00 on 23 Sep 13 - No Cached
  • Geothermal energy is essentially free heat that comes from under your feet,
  • Additionally, the generation of geothermal energy in the U.S. is enough to power over two million homes.
  • "The industry is growing now, because over the past decade both the federal and state government have put in place laws and policies to really promote clean energy".
hardingmar00

geothermal energy - National Geographic Education - 0 views

education.nationalgeographic.com/...geothermal-energy

geothermal form

shared by hardingmar00 on 24 Sep 13 - No Cached
  • Geothermal energy is heat that is generated within the Earth.
wooddan99

geothermal CO2 emissions - 0 views

www.energyadvocate.com/air_geo.htm

geothermal co2

shared by wooddan99 on 25 Sep 13 - No Cached
  • Somewhat surprisingly, the hot air that carries the heat from the earth at geothermal sites also contains carbon dioxide, CO2, the Greenhouse Gas that sends anti-technologists into a frenzy.  The suite of 20 geothermal sites from which Southern California Electric is obligated to buy electricity produces 730 tonnes of CO2 for every gigawatt-hour (GWh) of electricity produced.  Across the spectrum of all natural-gas power plants in the US, the average CO2 production is 519 tonnes per GWh.  That is, the geothermal power plants, which burn no fossil fuels whatsoever, produce 41% more CO2 than the run-of-the-mill natural gas power plant for the same amount of electrical energy produced.
dpurdy

Geothermal Energy Construction: Resource Requirements and Impact Sources - 0 views

teeic.anl.gov/...index.cfm

geothermal infrastructure

shared by dpurdy on 03 Nov 12 - No Cached
  • The construction phase involves the construction of the geothermal field(s), infrastructure, power plants, and transmission lines.
dittrichcai99

How long has geothermal energy been around - 0 views

wiki.answers.com/..._geothermal_energy_been_around

geothermal

shared by dittrichcai99 on 13 Mar 13 - No Cached
  • dittrichcai99 on 13 Mar 13
     
    "In some countries geothermal energy has been around for thousands of years and has been used for cooking and heating."
dittrichcai99

History Of Geothermal Energy - 0 views

www.clean-energy-ideas.com/...tory_of_geothermal_energy.html

geothermal

shared by dittrichcai99 on 14 Mar 13 - No Cached
  • dittrichcai99 on 14 Mar 13
     
    "The history of geothermal power can be traced back to over 10,000 years ago to the American Paleo-Indians at their settlement in hot springs. This history has been uncovered through the use of archeology and shows the Indians used the hot springs for activities including, bathing and heating. It is also believed the springs were seen as a healing source."
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