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Geothermal Energy Utilization and Renewable-Energy Storage
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Geothermal Energy Utilization and Renewable-Energy Storage

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 7458

Special Issue Editor

Dr. Adele Manzella

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Guest Editor
Institute of Geosciences and Earth Resources, National Research Council, IGG-CNR, via Moruzzi 1, 56124 Pisa, Italy
Interests: geothermal potential for the different technologies; sustainability of geothermal development including economic, environmental and social aspects; innovative technologies for predicting, assessing, investigating geological systems and for optimal production from hydrothermal fluids and underground thermal state

Special Issue Information

Dear Colleagues,

An acceleration of geothermal deployment is required due to the increasing demand of low-carbon energy technologies. Such development requires an enhanced awareness of geothermal potential for producing energy with a variety of applications, a better understanding of geological systems in order to improve environmental and economic sustainability, and technological innovation in investigating, accessing, developing resources, and for heat and electricity generation and system integration, including underground thermal storage. Novel regulatory, financial, political, and social solutions allow overcoming barriers obstructing the deployment of geothermal energy solutions and increase the market uptake.

This Special Issue welcomes papers on geothermal energy utilization and uptake, including case studies and innovative solutions in any aspect of geothermal deployment.

Dr. Adele Manzella
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Energies 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 2600 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 electricity and heating and cooling generation
  • geoexchange
  • thermal storage
  • potential
  • energy conversion
  • integration
  • benefits
  • sustainability
  • policy
  • market

Published Papers (3 papers)

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Research

26 pages, 8018 KiB  
Article
Thermal Protection Technology for Acoustic–Magnetic Device in a Geothermal Water Anti-Scaling System
by Alexey Korzhakov and Sergei Oskin
Energies 2021, 14(19), 6024; https://doi.org/10.3390/en14196024 - 22 Sep 2021
Cited by 2 | Viewed by 1461
Abstract
This article presents the results of the design of acoustic–magnetic device thermal protection technology based on simulation. The acoustic–magnetic device (AMD) was installed in the heat supply system of a greenhouse complex with a geothermal heat source, developed and patented by the authors [...] Read more.
This article presents the results of the design of acoustic–magnetic device thermal protection technology based on simulation. The acoustic–magnetic device (AMD) was installed in the heat supply system of a greenhouse complex with a geothermal heat source, developed and patented by the authors of this paper. Simulation was performed to investigate the possibility of maintaining the acoustic transmitter temperature of the acoustic–magnetic device in its operating range. The QuickField Student Edition v 6.4 simulation environment was used for this purpose. Based on the results of the simulation, the optimum thermal mode of the acoustic–magnetic device was developed and implemented. The optimum temporal operating mode of the acoustic–magnetic device is necessary for the optimization of the non-reagent treatment of geothermal water in a heat supply system of a greenhouse complex. It allows for a considerable reduction in the intensity of scale formation in the heat exchanger and equipment of a geothermal heating system. As demonstrated by the simulation thermal modes, the acoustic–magnetic device provides conditions for the work maintenance of the AMD acoustic transmitter at the resonance frequency, reduces the power expenses, and increases the efficiency of the acoustic influence on the scale formed in the heat supply system of a greenhouse complex. The results of the simulation were implemented in the greenhouse complex of JSC “Raduga”. The thermal protection technology was realized by installing two acoustic–magnetic devices and automation systems in the geothermal heating system a greenhouse complex. Full article
(This article belongs to the Special Issue Geothermal Energy Utilization and Renewable-Energy Storage)
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14 pages, 1627 KiB  
Article
Applying Harmonised Geothermal Life Cycle Assessment Guidelines to the Rittershoffen Geothermal Heat Plant
by Mélanie Douziech, Lorenzo Tosti, Nicola Ferrara, Maria Laura Parisi, Paula Pérez-López and Guillaume Ravier
Energies 2021, 14(13), 3820; https://doi.org/10.3390/en14133820 - 25 Jun 2021
Cited by 14 | Viewed by 2583
Abstract
Heat production from a geothermal energy source is gaining increasing attention due to its potential contribution to the decarbonization of the European energy sector. Obtaining representative results of the environmental performances of geothermal systems and comparing them with other renewables is of utmost [...] Read more.
Heat production from a geothermal energy source is gaining increasing attention due to its potential contribution to the decarbonization of the European energy sector. Obtaining representative results of the environmental performances of geothermal systems and comparing them with other renewables is of utmost importance in order to ensure an effective energy transition as targeted by Europe. This work presents the outputs of a Life Cycle Assessment (LCA) performed on the Rittershoffen geothermal heat plant applying guidelines that were developed within the H2020 GEOENVI project. The production of 1 kWhth from the Rittershoffen heat plant was compared to the heat produced from natural gas in Europe. Geothermal heat production performed better than the average heat production in climate change and resource use, fossil categories. The LCA identified the electricity consumption during the operation and maintenance phase as a hot spot for several impact categories. A prospective scenario analysis was therefore performed to assess the evolution of the environmental performances of the Rittershoffen heat plant associated with the future French electricity mixes. The increase of renewable energy shares in the future French electricity mix caused the impact on specific categories (e.g., land use and mineral and metals resource depletion) to grow over the years. However, an overall reduction of the environmental impacts of the Rittershoffen heat plant was observed. Full article
(This article belongs to the Special Issue Geothermal Energy Utilization and Renewable-Energy Storage)
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19 pages, 2960 KiB  
Article
Cation-Exchange Capacity Distribution within Hydrothermal Systems and Its Relation to the Alteration Mineralogy and Electrical Resistivity
by Tobias Björn Weisenberger, Heimir Ingimarsson, Gylfi Páll Hersir and Ólafur G. Flóvenz
Energies 2020, 13(21), 5730; https://doi.org/10.3390/en13215730 - 2 Nov 2020
Cited by 7 | Viewed by 2513
Abstract
Cation-exchange capacity (CEC) measurements are widely used to quantify the smectite content in altered rocks. Within this study, we measure the CEC of drill cuttings in four wells from three different high-temperature geothermal areas in Iceland. The CEC measurements in all four wells [...] Read more.
Cation-exchange capacity (CEC) measurements are widely used to quantify the smectite content in altered rocks. Within this study, we measure the CEC of drill cuttings in four wells from three different high-temperature geothermal areas in Iceland. The CEC measurements in all four wells show similar depth/temperature related pattern, and when comparing the CEC with electrical resistivity logs, we could show that the low resistivity zone coincides with CEC values >5 meq/100 g. The measurements show, in general, an exponential decrease of the CEC with increasing depth. At the facies boundary between the mixed-layer clay and epidote-chlorite zone, the CEC reaches a steady state at about 5 meq/100 g and below that it only decreases slightly within a linear trend with increasing depth. The facies boundary overlaps with the transition where the electrical resistivity logs show an increase in resistivity. It is shown that the measured CEC can be related to the clay mineral alteration within the geothermal system and the CEC reflects the smectite component within the interstratified chlorite/smectite minerals for similar alteration degree. Furthermore, CEC was measured in seven core samples from different alteration zones that had previously been studied in detail with respect to petrophysical and conductivity properties. The results show a clear correlation between CEC and the iso-electrical point, which describes the value of the pore fluid conductivity where transition from surface conductivity to pore fluid conductivity occurs. The presented study shows that the CEC within hydrothermal altered basaltic systems mimics the expandable clay mineral alteration zones and coincides with electrical logs. The presented method can, therefore, be an easy tool to quantify alteration facies within geothermal exploration and drilling projects. Full article
(This article belongs to the Special Issue Geothermal Energy Utilization and Renewable-Energy Storage)
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