Recent Advances in Geothermal Energy Exploration

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 5475

Special Issue Editor

Special Issue Information

Dear Colleagues,

The Guest Editor is glad to invite authors to participate to the Special Issue of Applied Sciences “Recent Advances in Geothermal Energy Exploitation”.

The development and exploitation of renewable sources are today considered fundamental keys towards providing the energy supply security, environmental protection, and affordability. In this context, geothermal energy represents a very interesting option owing its programmable characteristic and possible integration with intermittent renewable sources and innovative energy systems. Nevertheless, the actual contribution to worldwide cooling, heating, and power generation is relatively small.

This Special Issue aims at providing a forum for information and discussion on recent advances in the area of the geothermal energy exploitation and promoting an efficient development and faster spreading of the geothermal source. Articles presenting original results and case studies are particularly encouraged.

Topics of interest include, but are not limited to:

  • Innovative and traditional geothermal energy systems;
  • Hybrid energy systems;
  • Cogeneration and polygeneration;
  • Distributed and small-scale generation;
  • Heating and cooling applications;
  • Assessment of geothermal sources and shallow geothermal potential;
  • Exploration of geothermal fields and reservoir characterisation;
  • Numerical and experimental investigations on geothermal sources exploitation;
  • Assessment of environmental impacts;
  • Review and economic studies on geothermal energy systems;
  • Case studies and best practices;
  • Policy development.

Prof. Angelo Algieri
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • geothermal energy exploitation
  • geothermal sources assessment
  • innovative energy systems
  • cogeneration
  • polygeneration
  • efficiency
  • environmental impact
  • energy supply security
  • thermo-economic analysis
  • policy development

Published Papers (2 papers)

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Research

22 pages, 643 KiB  
Article
Evolution of a Geothermal System with Fluid Re-Injection
by Angiolo Farina, Antonio Fasano, Mario Primicerio and Fabio Rosso
Appl. Sci. 2020, 10(21), 7561; https://0-doi-org.brum.beds.ac.uk/10.3390/app10217561 - 27 Oct 2020
Viewed by 1578
Abstract
In this paper, we study the stationary configurations of a vapor-dominated geothermal system. We propose a general mathematical model, which turns out to be a free boundary problem, and we focus on the stationary solutions. The analysis, developed considering the data of the [...] Read more.
In this paper, we study the stationary configurations of a vapor-dominated geothermal system. We propose a general mathematical model, which turns out to be a free boundary problem, and we focus on the stationary solutions. The analysis, developed considering the data of the geothermal field in Larderello, Tuscany (Italy), shows that steady-stable states may exist both when the re-injection takes place in depth and when the natural recharge is distributed both in the area occupied by vapor and in the one occupied by liquid. Full article
(This article belongs to the Special Issue Recent Advances in Geothermal Energy Exploration)
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27 pages, 8471 KiB  
Article
Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation
by Pietropaolo Morrone and Angelo Algieri
Appl. Sci. 2020, 10(19), 6639; https://0-doi-org.brum.beds.ac.uk/10.3390/app10196639 - 23 Sep 2020
Cited by 22 | Viewed by 3051
Abstract
In recent years, an increasing interest in geothermal energy has been registered in both the scientific community and industry. The present work aims to analyse the energy performance and the economic viability of an innovative high-efficiency geothermal-driven integrated system for a combined heat [...] Read more.
In recent years, an increasing interest in geothermal energy has been registered in both the scientific community and industry. The present work aims to analyse the energy performance and the economic viability of an innovative high-efficiency geothermal-driven integrated system for a combined heat and power (CHP) application. The system consists of a heat exchanger (HEX) and a transcritical organic Rankine cycle (ORC) that work in parallel to exploit a high-temperature geothermal source (230 °C) and satisfy the energy demand of a commercial centre located in Southern Italy. The ORC and HEX sub-units can operate at partial load to increase the system flexibility and to properly react to continuous changes in energy request. A lumped model was developed to find the proper operating conditions and to evaluate the energy production on an hourly basis over the whole year. In particular, a multi-variable optimisation was implemented to find the most suitable configuration and a 101.4 kWel ORC was selected while the HEX nominal power was 249.5 kWth. The economic viability of the integrated system was evaluated in terms of net present value and payback period and different operating strategies were compared: thermal-driven, electric-driven, and a mixed strategy. The latter turned out to be the best solution according to both energy and economic criteria, with electric and thermal self-consumptions larger than 90%, with no heat dumping and a payback time close to five years. Full article
(This article belongs to the Special Issue Recent Advances in Geothermal Energy Exploration)
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