Geothermal resources within carbonate reservoirs in western Sicily (Italy): A review

Montanari, Domenico; Minissale, A.; Doveri, Marco; Gola, Gianluca; Trumpy, Eugenio; Santilano, Alessandro; Manzella, Adele

doi:10.1016/j.earscirev.2017.04.016

Cited by 64 publications

(42 citation statements)

References 59 publications

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“…The bottom ground surface was assumed to be adiabatic, whereas a convective heat flux is imposed on the top surface of the domain. The external temperature was assumed to be equal to 16.0 • C, which is the yearly average temperature of the area. As concerns the wells, a fixed temperature, T, equal to that of flow extraction and injection, is imposed on the lateral surfaces.…”

Section: Boundary and Initial Conditionsmentioning

confidence: 99%

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Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

Iorio¹,

Carotenuto

Corniello

et al. 2020

Energies

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In this study, the sustainability of low-temperature geothermal field exploitation in a carbonate reservoir near Mondragone (CE), Southern Italy, is analyzed. The Mondragone geothermal field has been extensively studied through the research project VIGOR (Valutazione del potenzIale Geotermico delle RegiOni della convergenza). From seismic, geo-electric, hydro-chemical and groundwater data, obtained through the experimental campaigns carried out, physiochemical features of the aquifers and characteristics of the reservoir have been determined. Within this project, a well-doublet open-loop district heating plant has been designed to feed two public schools in Mondragone town. The sustainability of this geothermal application is analyzed in this study. A new exploration well (about 300 m deep) is considered to obtain further stratigraphic and structural information about the reservoir. Using the derived hydrogeological model of the area, a numerical analysis of geothermal exploitation was carried out to assess the thermal perturbation of the reservoir and the sustainability of its exploitation. The effect of extraction and reinjection of fluids on the reservoir was evaluated for 60 years of the plant activity. The results are fundamental to develop a sustainable geothermal heat plant and represent a real case study for the exploitation of similar carbonate reservoir geothermal resources. Author Contributions: Conceptualization, M.I., N.M., and L.V.; Data curation, M.I. and A.C. (Alfonso Corniello); Formal analysis, S.D.F.; Funding acquisition, M.I., A.C. (Alberto Carotenuto), N.M., and L.V.; Methodology, S.D.F. and N.M.; Project administration, M.I., A.C. (Alberto Carotenuto) and N.M.; Writing-original draft, S.D.F.; Writing-review and editing, M.I., A.

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Section: Boundary and Initial Conditionsmentioning

confidence: 99%

“…With the exception of active volcanic areas, carbonate aquifers are the most important geothermal reservoirs in which low-to-medium temperatures are usually reached at significant depths from the ground level (>1000 m) (e.g., [10][11][12][13][14][15][16]).…”

Section: Introductionmentioning

confidence: 99%

Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

Iorio¹,

Carotenuto

Corniello

et al. 2020

Energies

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“…As an important renewable clean energy, geothermal resources (including guidance and the low-to-medium temperatures) have been of extensive concern all over the world for residential and commercial purposes, such as space heating and electric power generation [1][2][3]. The low-to-medium temperature geothermal resources (i.e., below 150 • C) are widespread in the world, and represent one of the most readily-exploitable geothermal resources [4]. A systematic assessment of the low-to-medium temperature geothermal resources would provide a useful guidance for the sustainable development and utilization of thermal water.…”

Section: Introductionmentioning

confidence: 99%

Systematic Analysis of Geothermal Resources in the Coastal Bedrock Area of Chunxiao Town (China) by Using Geochemistry and Geophysics Methods

Zhao

Lin

Zhou

et al. 2019

Water

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Geochemical and geophysical investigations were carried out to obtain more evidence of the potential of geothermal resources in Chunxiao Town (China). Hydrochemical data indicate the possible existence of mixing process between deep geothermal water and shallow groundwater. Analysis with SiO 2 geothermometer shows that the geothermal reservoir temperature was estimated around 40-60 • C. In addition, combination investigations with CSAMT, radioactive radon, and soil thermal-released mercury detection reveal the specific location of the conduction fractures for thermal water circulation. Furthermore, the drilling work shows the deep thermal water temperature of >55 • C and the thermal water yield of 300 m 3 /d. All these results could provide important guidance for the scientific exploration and effective utilization of geothermal resources in coastal area.

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“…It is worth noting that, nowadays, most geothermal installations present electric power higher than 200 kWel, whereas few applications on small-scale The actual contribution of the heat beneath the surface of solid earth to the national electric production is limited to the Toscana region (Central Italy), even though high potential exists in the rest of the Italian peninsula and specific incentives are defined by the national legislation [14][15][16]. Furthermore, the exploitation of the active volcanic area represents a promising option due to the high temperature reservoirs' availability [17][18][19][20][21]. Nevertheless, few studies exist in the literature; for this reason, the present work focuses on the possible valorisation of geothermal sources in the active volcanic area of Phlegraean Fields Caldera (Southern Italy) by adopting small-scale Organic Rankine Cycle (ORC) units.…”

Section: Introductionmentioning

confidence: 99%

Energy Exploitation of High-Temperature Geothermal Sources in Volcanic Areas—a Possible ORC Application in Phlegraean Fields (Southern Italy)

Algieri

2018

Energies

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This work aims to investigate the energy performances of small-scale Organic Rankine Cycles (ORCs) for the exploitation of high temperature geothermal sources in volcanic areas. For this purpose, a thermodynamic model has been developed, and a parametric analysis has been performed that considers subcritical and transcritical configurations, and different organic fluids (isobutane, isopentane, and R245ca). The investigation illustrates the significant effect of the temperature at the entrance of the expander on the ORC behaviour and the rise in system effectiveness when the internal heat exchange (IHE) is adopted. As a possible application, the analysis has focused on the active volcanic area of Phlegraean Fields (Southern Italy) where high temperature geothermal reservoirs are available at shallow depths. The work demonstrates that ORC systems represent a very interesting option for exploiting geothermal sources and increasing the share of energy production from renewables. In particular, the investigation has been performed considering a 1 kg/s geothermal mass flow rate at 230 • C. The comparative analysis highlights that transcritical configurations with IHE guarantee the highest performance. Isopentane is suggested to maximise the ORC electric efficiency (17.7%), while R245ca offers the highest electric power (91.3 kW el ). The selected systems are able to fulfil a significant quota of the annual electric load of domestic users in the area.

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Geothermal resources within carbonate reservoirs in western Sicily (Italy): A review

Cited by 64 publications

References 59 publications

Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

Systematic Analysis of Geothermal Resources in the Coastal Bedrock Area of Chunxiao Town (China) by Using Geochemistry and Geophysics Methods

Energy Exploitation of High-Temperature Geothermal Sources in Volcanic Areas—a Possible ORC Application in Phlegraean Fields (Southern Italy)

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