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Energy Geotechnics and Geostructures—2nd Edition

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

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1845

Special Issue Editors

Mining College, Guizhou University, Guiyang, Guizhou 550025, China
Interests: energy-related geotechnics; GSHP application in complext karstic environemt; heat transfer and storage in rock bodies; exergy analysis
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Guest Editor
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
Interests: underground coal gasification; microseismic signal analysis of underground engineering
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Special Issue Information

Dear Colleagues,

Facing the global challenge in climate change and the needs of sustainable energy supply, energy geotechnics and energy geostructures have demonstrated their great potential not only in improving traditional energy recovery and utilization but also in promoting and developing new energy technologies throughout the world, such as converting abandoned underground space to energy storage facilities, the integration of geothermal extraction to building foundations, carbon geosequestration, underground coal gasification, underground data centres, the co-recovery of minerals and geothermal energy, energy piles, walls and tunnels, etc. This has contributed to research advances in materials of high heat conduction and storage capacity, optimization in design and project management, new simulation technology, more smart monitoring systems, and so on. Geostructures simultaneously carry mechanical load as well as energy and mass transfer in various uncertain geotechnical conditions, so research usually involves complex coupled thermal–hydrodynamic–mechanical–chemical  processes and governing mechanisms. Continuous development and application in this interdisciplinary field requires innovative thinking and tremendous communications across different areas.

This Special Issue aims to gather original experimental, theoretical, and numerical research articles to present and disseminate the most recent advances related to the theory, experiment, design, modelling, application, construction, monitoring in energy geotechnics and geostructures.

Topics of interest for publication include, but are not limited to, the following:

  • Application of phase change materials in geostructures;
  • Theory and method advance in thermal–hydrodynamic–mechanical–chemical coupled processes;
  • Evaluation method and risk control in utilizing abandoned mine space for energy storage;
  • Integration of geothermal with other renewable energy in geostructures;
  • Role and contribution of geotechnics and geostructures to carbon neutrality;
  • Energy and mass transfer in complex hydrogeological conditions;
  • Exergic analysis in energy geotechnics and geostructures;
  • New smart monitoring apparatus and methods.

Dr. Peng Pei
Dr. Fa-Qiang Su
Guest Editors

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

  • energy geotechnics
  • energy geostructure
  • modeling
  • experiment
  • monitoring
  • design and construction

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Related Special Issue

Published Papers (2 papers)

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Research

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25 pages, 7559 KiB  
Article
Impact of Geometrical Misplacement of Heat Exchanger Pipe Parallel Configuration in Energy Piles
by Qusi I. Alqawasmeh, Guillermo A. Narsilio and Nikolas Makasis
Energies 2024, 17(11), 2580; https://doi.org/10.3390/en17112580 - 27 May 2024
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Abstract
Shallow geothermal or ground source heat pump (GSHP) energy systems offer efficient space heating and cooling, reducing greenhouse gas emissions and electrical consumption. Incorporating ground heat exchangers (GHEs) within pile foundations, as part of these GSHP systems, has gained significant attention as it [...] Read more.
Shallow geothermal or ground source heat pump (GSHP) energy systems offer efficient space heating and cooling, reducing greenhouse gas emissions and electrical consumption. Incorporating ground heat exchangers (GHEs) within pile foundations, as part of these GSHP systems, has gained significant attention as it can reduce capital costs. The design and optimisation of GHEs connected in parallel within energy piles have been researched widely, considering symmetrical placement, while the potential misplacement due to construction errors and the optimal placement remain mostly unexplored. This study utilises 3D finite element numerical methods, analysing energy piles with diameters from 0.5 m to 1.4 m, equipped with parallelly connected U-tube and W-tube GHEs. The impact of GHE loop placement is analysed, considering the influence of the ground and concrete thermal conductivities, pile length, fluid flow rate, GHE pipe diameter, and pile spacing. Results indicate a marginal impact, less than 3%, on the overall heat transfer when loops deviate from symmetry and less than 5% on the total heat transfer shared by each loop, except for highly non-symmetric configurations. Symmetrical and evenly spaced loop placement generally maintains favourable thermal performance and ease of installation. This study underscores the flexibility in GHE design and construction with a low risk of thermal yield variations due to uncertainties, particularly with a separation-to-shank distance ratio between 0.5 and 1.5 in a symmetrical distribution. Full article
(This article belongs to the Special Issue Energy Geotechnics and Geostructures—2nd Edition)
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Review

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18 pages, 3542 KiB  
Review
Technologies for Heat Hazard Governance and Thermal Energy Recovery in Deep Mines
by Yujin Ran, Jia Peng, Xiaolin Tian, Dengyun Luo, Jie Zhao and Peng Pei
Energies 2024, 17(6), 1369; https://doi.org/10.3390/en17061369 - 13 Mar 2024
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Abstract
As the depth of mines continues to increase, the problems of high temperature and potential heat damage become more prominent. In this study, the characteristics of natural and industrial heat sources in mines were reviewed, and then mainstream heat hazard governance technologies and [...] Read more.
As the depth of mines continues to increase, the problems of high temperature and potential heat damage become more prominent. In this study, the characteristics of natural and industrial heat sources in mines were reviewed, and then mainstream heat hazard governance technologies and corresponding utilization methods were discussed and compared. The first category of technologies comprises the optimization of ventilation systems, the insulation of roc heat, and artificial refrigeration. These cooling approaches are limited because the heat resources cannot be recovered. The second category is the utilization of waste industrial heat in mines, including the use of waste heat from the air compressors, drainage water, and foul airflow, but the current applications of these approaches have limited effectiveness in cooling the underground space. The third category is the application of geo-structures to recover natural heat in mines. Based on the principles of the chiller/heat pump cycle and the characteristics of heat sources and sinks in mines, the potential and constraints of each technology were discussed and summarized. This study provides a scientific reference for the selection of suitable heat governance and utilization technologies. Full article
(This article belongs to the Special Issue Energy Geotechnics and Geostructures—2nd Edition)
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