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- Enhanced_geothermal_system abstract "An enhanced geothermal system (EGS) generates geothermal electricity without the need for natural convective hydrothermal resources. Until recently, geothermal power systems have exploited only resources where naturally occurring heat, water, and rock permeability are sufficient to allow energy extraction. However, by far most of geothermal energy within reach of conventional techniques is in dry and impermeable rock. EGS technologies enhance and/or create geothermal resources in this hot dry rock (HDR) through 'hydraulic stimulation'.When natural cracks and pores do not allow economic flow rates, the permeability can be enhanced by pumping high-pressure cold water down an injection well into the rock. The injection increases the fluid pressure in the naturally fractured rock, mobilizing shear events that enhance the system's permeability. As there is a continuous circulation, neither is a high permeability required, nor are proppants required to maintain the fractures in an open state. This process, termed hydro-shearing, perhaps to differentiate it from an equivalent procedure. Nevertheless it is substantially the same as hydraulic tensile fracturing used in the oil and gas industry.Water travels through fractures in the rock, capturing the rock's heat until forced out of a second borehole as very hot water. The water's heat is converted into electricity using either a steam turbine or a binary power plant system. All of the water, now cooled, is injected back into the ground to heat up again in a closed loop.EGS technologies, like hydrothermal geothermal, can function as baseload resources that produce power 24 hours a day, like a fossil fuel plant. Unlike hydrothermal, EGS appears to be feasible anywhere in the world, depending on the economic limits of drill depth. Good locations are over deep granite covered by a 3–5 kilometres (1.9–3.1 mi) layer of insulating sediments that slow heat loss. EGS wells are expected to have a useful life of 20 to 30 years before the outflow temperature drops about 10 c (18 f) and the well becomes uneconomic.EGS systems are currently being developed and tested in France, Australia, Japan, Germany, the U.S. and Switzerland. The largest EGS project in the world is a 25-megawatt demonstration plant currently being developed in Cooper Basin, Australia. Cooper Basin has the potential to generate 5,000–10,000 MW.".
- Enhanced_geothermal_system thumbnail EGS_diagram.svg?width=300.
- Enhanced_geothermal_system wikiPageExternalLink details.aspx.
- Enhanced_geothermal_system wikiPageExternalLink egs.
- Enhanced_geothermal_system wikiPageExternalLink www.megsorg.org.
- Enhanced_geothermal_system wikiPageExternalLink tools_gt_prospector.html.
- Enhanced_geothermal_system wikiPageExternalLink raham.pdf.
- Enhanced_geothermal_system wikiPageExternalLink geo_hotdry_rock.pdf.
- Enhanced_geothermal_system wikiPageExternalLink egs_animation.html.
- Enhanced_geothermal_system wikiPageExternalLink geothermal_basics.html.
- Enhanced_geothermal_system wikiPageID "12951705".
- Enhanced_geothermal_system wikiPageRevisionID "606295600".
- Enhanced_geothermal_system hasPhotoCollection Enhanced_geothermal_system.
- Enhanced_geothermal_system subject Category:Geothermal_energy.
- Enhanced_geothermal_system subject Category:Power_station_technology.
- Enhanced_geothermal_system comment "An enhanced geothermal system (EGS) generates geothermal electricity without the need for natural convective hydrothermal resources. Until recently, geothermal power systems have exploited only resources where naturally occurring heat, water, and rock permeability are sufficient to allow energy extraction. However, by far most of geothermal energy within reach of conventional techniques is in dry and impermeable rock.".
- Enhanced_geothermal_system label "Energia geotermalna suchych skał".
- Enhanced_geothermal_system label "Enhanced geothermal system".
- Enhanced_geothermal_system label "Hot-Dry-Rock-Verfahren".
- Enhanced_geothermal_system label "Sistemi geotermici migliorati".
- Enhanced_geothermal_system label "高温岩体地熱発電".
- Enhanced_geothermal_system sameAs Hot-Dry-Rock-Verfahren.
- Enhanced_geothermal_system sameAs Sistemi_geotermici_migliorati.
- Enhanced_geothermal_system sameAs 高温岩体地熱発電.
- Enhanced_geothermal_system sameAs Energia_geotermalna_suchych_skał.
- Enhanced_geothermal_system sameAs m.04jpk7y.
- Enhanced_geothermal_system sameAs Q1630652.
- Enhanced_geothermal_system sameAs Q1630652.
- Enhanced_geothermal_system wasDerivedFrom Enhanced_geothermal_system?oldid=606295600.
- Enhanced_geothermal_system depiction EGS_diagram.svg.
- Enhanced_geothermal_system isPrimaryTopicOf Enhanced_geothermal_system.
