Geothermal energy

Dickson, M.H.; Fanelli, M.

doi:10.1016/0140-6701(96)88755-8

Cited by 17 publications

(22 citation statements)

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“…Geotermalni sistem (axelsson & GunnlauGsson, 2000;Dickson & Fanelli, 2004;HocHstein, 1990) sestavljajo vir toplote, geotermalni rezervoar in geotermalni fluid. Sistem obsega celotno hidrogeolo{ko povezano obmo~je z napajanjem, rezervoarji in cono iztoka.…”

Section: Geotermalni Sistemi In Njihov Potencialunclassified

“…Skupna toplotna energija v Zemlji, prera~una-na nad privzeto popre~no temperaturo povr{ja 15 °C, je reda velikosti 12,6•10 12 EJ (1 EJ=10 18 J), samo tista v Zemljini skorji do globin 50 km pa zna{a 5,4•10 9 EJ (Dickson & Fanelli, 2004 (GutiéRRez-neGRín, 2011). Glede na globalno izgubo Zemljine toplote s kondukcijo (angl.…”

Section: Geotermi~ne Lastnosti Vrhnjega Dela Zemljine Skorjeunclassified

“…Soultz-sousForêts in Cooper basin). Po obdobju relativnega zapostavljanja so ti projekti pridobili nov zagon, predvsem po ugotovitvah, da so kamnine tudi v ve~ji globini do dolo~ene mere naravno razpo-kane, in da bodo privzete metodologije in tehnologije odvisne od lokalnih geolo{kih pogojev (Dickson & Fanelli, 2004). Najnaprednej{e raziskave so se odvijale na Japonskem in v Franciji.…”

Section: Egs -Izbolj{ani Geotermalni Sistemiunclassified

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Possibilities for electricity production from geothermal energy in Slovenia in the next decade

Rajver¹,

Lapanje²,

Rman³

2012

Geologija

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Klju~ne besede: geotermalni visokotemperaturni vir, geotermalna elektrarna, hidrotermalni vir, HDR, EGS, termi~na u~inkovitost, naftna in plinska industrija, severovzhodna Slovenija, Panonski bazen.Key words: high temperature resources, geothermal power plant, hydrothermal resources, HDR, EGS, thermal efficiency, oil and gas industry, Northeastern Slovenia, Pannonian basin Izvle~ek lanek je namenjen ozave{~anju zainteresirane javnosti s ciljem, da lahko vsak presodi resni~nost in pravilnost zapisov, ki se o možnostih izrabe geotermalne energije pojavljajo v medijih. Obravnava namre~ celovit pregled geotermalnih sistemov, potencial hidrotermalnih in izbolj{anih geotermalnih sistemov, nadalje mehanizme in zna~ilnosti srednje-do visokotemperaturnih geotermalnih virov ter na~in njihove pretvorbe v elektriko. Predstavljeni so glavni elementi, ki vplivajo na uspe{nost pretvorbe geotermalne v elektri~no energijo. Podana sta pregled potrebnih raziskav za ugotovitev geotermi~nega potenciala in ocena tehnolo{kih ter ekonomskih možnosti postavitve geotermalnih elektrarn v Sloveniji. Pri tem je opisano stanje poznavanja srednje-in visokotemperaturnih geotermalnih virov v Sloveniji z za~etnimi pogoji za postavitev geotermalne elektrarne. Poleg tega podajamo teoreti~ne izra~une izkoristka pretvorbe geotermalne energije v elektri~no s klasi~nimi turbinami in navajamo pogoste teža-ve pri izkori{~anju geotermalne energije, ki so povezane z dodatnimi stro{ki in znižujejo u~inkovitost investicije. Opisane so lastnosti ter u~inkovitost binarnih geotermalnih elektrarn in tuje izku{nje pri pridobivanju elektrike iz EGS (izbolj{ani geotermalni sistem, angl. Enhanced Geothermal System). Obravnavamo tudi prekrivanje delovanja naftne in plinske industrije z delovanjem EGS ter uporabnost naftnih in plinskih vrtin za proizvodnjo geotermalne elektrike. AbstractThis article is intended to raise awareness of the public, with the aim that anyone can judge reality and accuracy of records that appear in the media on the exploitation of geothermal energy. It provides a comprehensive overview of geothermal systems, potential of hydrothermal and enhanced geothermal systems, of mechanisms and characteristics of middle and high enthalpy geothermal resources. It also deals with a mode of their conversion into electricity. Featured are the main factors affecting the decision on effectiveness of conversion of geothermal energy into electricity. Given are the review of the research necessary to establish the geothermal potential and assessment of technological and economic possibilities of installing geothermal power plants in Slovenia. The paper also describes the state of knowledge of middle-and high temperature geothermal resources in Slovenia with initial conditions for constructing geothermal power plants. In addition, we present theoretical calculations of the conversion efficiency of geothermal energy into electricity with conventional turbines and present some problems for the exploitation of geothermal energy, which are associated with additiona...

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Section: Geotermalni Sistemi In Njihov Potencialunclassified

Section: Geotermi~ne Lastnosti Vrhnjega Dela Zemljine Skorjeunclassified

Section: Egs -Izbolj{ani Geotermalni Sistemiunclassified

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Possibilities for electricity production from geothermal energy in Slovenia in the next decade

Rajver¹,

Lapanje²,

Rman³

2012

Geologija

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“…If thus exploited, the overall efficiency of geothermal power conversion is far higher than for most other forms of energy. Furthermore, geothermal power plants are characterized by extremely high capacity factors (typically in excess of 90%, with many over 95%), which means that they are typically operated 24/7, producing copious amounts of baseload power and heat [6]. As geothermal power plants typically have very low carbon emissions, their ability to supply baseload puts them on a par with nuclear energy for overall performance [4,9], with none of the operational safety and hazardous waste management issues posed by nuclear.…”

Section: Introductionmentioning

confidence: 99%

“…Natural thermal springs have also long been used for laundry purposes, and even for cooking. All of these uses-together with space heating and various industrial heating applications-are instances of direct use of geothermal resources [6].…”

Section: Introductionmentioning

confidence: 99%

Geothermal Energy: Delivering on the Global Potential

2015

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Geothermal energy has been harnessed for recreational uses for millennia, but only for electricity generation for a little over a century. Although geothermal is unique amongst renewables for its baseload and renewable heat provision capabilities, uptake continues to lag far behind that of solar and wind. This is mainly attributable to (i) uncertainties over resource availability in poorly-explored reservoirs and (ii) the concentration of full-lifetime costs into early-stage capital expenditure (capex). Recent advances in reservoir characterization techniques are beginning to narrow the bounds of exploration uncertainty, both by improving estimates of reservoir geometry and properties, and by providing pre-drilling estimates of temperature at depth. Advances in drilling technologies and management have potential to significantly lower initial capex, while operating expenditure is being further reduced by more effective reservoir management-supported by robust models-and increasingly efficient energy conversion systems (flash, binary and combined-heat-and-power). Advances in characterization and modelling are also improving management of shallow low-enthalpy resources that can only be exploited using heat-pump technology. Taken together with increased public appreciation of the benefits of geothermal, the technology is finally ready to take its place as a mainstream renewable technology, exploited far beyond its traditional confines in the world's volcanic regions.

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Social Benefits and Challenges of Geothermal Energy

Mosallanezhad,

Rahimpour

2024

Encyclopedia of Renewable Energy, Sustainability and the Environment

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Geothermal energy

Cited by 17 publications

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Possibilities for electricity production from geothermal energy in Slovenia in the next decade

Possibilities for electricity production from geothermal energy in Slovenia in the next decade

Geothermal Energy: Delivering on the Global Potential

Social Benefits and Challenges of Geothermal Energy

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