Geothermal power generation in the world 2005–2010 update report

Bertani, Ruggero

doi:10.1016/j.geothermics.2011.10.001

Cited by 325 publications

(152 citation statements)

References 4 publications

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“…GolDstein et al (2009) Table 2. Global continental stored heat and EGS technical potentials for electricity (GutiéRRez-neGRín, 2011) Trenutno razvite geotermalne elektrarne, z izjemo tiste v Soultz-sous-Forêts-ju, izkori{~ajo hidrotermalne sisteme (BeRtani, 2010). Geotermalni sistem v Renskem tektonskem jarku z elektrarno Landau v Nem~iji (3 MW e mo~i) nekateri uvr{~ajo med EGS, ~eprav leži na obmo~ju vodonosnikov z vro~o vodo v omenjenem tektonskem jarku (scHellscHmiDt et al, 2010).…”

Section: Hidrotermalni Sistemiunclassified

“…Od vseh delujo~ih geotermalnih elektrarn v letu 2010 z 10898 MW e instalirane kapacitete je bilo približno 11 % mo~i (1178 MW e ) instalirane v elektrarnah z binarnimi in kombiniranimi cikli ter hibridnimi sistemi pretvorbe (BeRtani, 2010(BeRtani, , 2012. V Evropi binarni sistemi delujejo v Avstriji (Altheim, Bad Blumau, Simbach/Braunau), Nem~iji (Neustadt-Glewe, Landau, Unterhaching, Bruchsal), Franciji (Soultz-sous-Forêts) in na francoskem otoku Guadeloupe (Bouillante), v Tur~iji v Mali Aziji (Kizildere in Dora) in Pico Vermelho na Azorskem otoku Sao Miguel (Portugalska).…”

Section: Binarne Geotermalne Elektrarneunclassified

“…S 5-stopenjsko potopno ~rpalko so pretok pove~ali do najve~ 100 l/s, s tem da toplotno izrabljeno vodo vra~ajo v vodonosnik. Neto u~inek ORC instalacije je okrog 500 kW pri pretoku 82 l/s, ~e od{tejemo parazitsko obremenitev 350 kW za potopno ~rpalko (BeRtani, 2012 …”

Section: Binarne Geotermalne Elektrarneunclassified

“…Nasprotno DiPiPPova (2004) analiza kaže, da so trditve o 15-50 % ali ve~ proizvodne mo~i za isti toplotni vložek v Kalina ciklu glede na ORC neutemeljene. Izra~unana razlika je 3 % v prid Kalina ciklu, pri ~emer je avtor upo{teval le eno binarno elektrarno s Kalina ciklom (2 MW e , Húsavík na Islandiji), sedaj pa delujeta {e dve novi, in sicer v Unterhachingu (južno od Mün chna) in Bruchsalu v Nem~iji (scHellscHmiDt et al, 2010;BeRtani, 2012).…”

Section: (3)unclassified

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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: Hidrotermalni Sistemiunclassified

Section: Binarne Geotermalne Elektrarneunclassified

Section: (3)unclassified

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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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“…Data collected in 2010 show that the electricity production in Italy from geothermal source was equal to 1.8% of the total national [5] one. The two geothermal plants located in Tuscany area (Larderello-Travale/Radicondoli and Mount Amiata) produce 5700 GWhe [6].…”

Section: Introductionmentioning

confidence: 99%

Energy Analysis of a Small Geothermal District Heating System in Southern Italy

Carotenuto¹,

Luca²,

Fabozzi³

et al. 2016

IJHT

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Small and medium size district heating networks have seen some spread over the last two decades, especially in cities which are not supplied by natural gas grids. In this paper, the authors investigate the energetic feasibility of a small district heating network feeding two schools in a city of Southern Italy (Mondragone). In particular, the district heating is powered by a low-temperature geothermal fluid pumped from a well located 2.1 km away from the city center. Geothermal fluid has a temperature of 34°C and a flow rate of 6 l/s. The buildings have been rehabilitated by an energy point of view and are equipped of low-temperature fan-coils in order to ensure their compatibility with the 4 th generation district heating system. Energy analysis were conducted through the implementation of transient simulation model in TRNSYS environment. The feasibility of two configurations of the system is compared: the first, with one heat pump installed nearby the geothermal well feeding the grid, and the second one with the heat pumps installed in each building substation. Transient simulations results show that the first configuration is energetically less efficient than the second one due to the high thermal losses (55% of the total consumption) of the district supply pipes.

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Dynamic triggering of microearthquakes in three geothermal/volcanic regions of California

Aiken

Peng

2014

JGR Solid Earth

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Geothermal/volcanic regions are most susceptible to local earthquake triggering by regional and remote earthquakes. Transient stresses caused by surface waves of these earthquakes can activate critically stressed faults. Though earthquakes can be triggered in geothermal/volcanic regions, it is less understood how these regions differ in their triggering responses to distant earthquakes. We conduct a systematic survey of local earthquakes triggered by distant earthquakes in three geothermal/volcanic regions of California: Long Valley Caldera, Coso Geothermal Field, and Geysers Geothermal Field. We examine waveforms of distant earthquakes with magnitudes ≥ 5.5 occurring between 2000 and 2012 and compute β statistics to confirm the significance of our findings. We find that Long Valley, Coso, and Geysers vary in triggering frequency-2.0%, 3.8%, and 6.8% in the 12 year period, respectively-and when compared to the triggering of deep tectonic tremors along the Parkfield-Cholame section of San Andreas Fault (9.2% in the 12 year period). Stress triggering thresholds vary among the regions with Long Valley having the highest of~5 kPa and 1 kPa for the other regions. Because dynamic stresses from distant earthquakes are similar in these three regions, the varying triggering behavior likely reflects faults having a tendency to be at or near failure. This is compatible with Geysers having a higher a value in the Gutenberg-Richter relationship and higher geothermal productivity than the other two regions. The observation of more frequent triggering of tremor than microearthquakes is consistent with recent laboratory studies on increasing triggerability with lower effective stress.

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Geothermal power generation in the world 2005–2010 update report

Cited by 325 publications

References 4 publications

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

Energy Analysis of a Small Geothermal District Heating System in Southern Italy

Dynamic triggering of microearthquakes in three geothermal/volcanic regions of California

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