Review
Green & Sustainable Science & Technology
Tian You, Wei Wu, Hongxing Yang, Jiankun Liu, Xianting Li
Summary: The study reviews the hybrid PVT-GSHP technology, discussing the principles, configurations, and functions of different system categories. It also suggests future directions for improvement, including advanced ground heat exchangers, PVT types, hybrid systems, and optimal design for better performance.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Yubo Wang, Zhenhua Quan, Yaohua Zhao, Lincheng Wang, Heran Jing
Summary: This paper studies the feasibility of a coupled air and ground source heat pump system with energy storage for building energy supply. The system utilizes auxiliary heat sources to achieve high-performance heating and energy storage, while optimizing defrosting control and soil heat balance. It has economic and environmental advantages.
Article
Green & Sustainable Science & Technology
Saunak Shukla, Ayman M. Bayomy, Sylvie Antoun, Aggrey Mwesigye, Wey H. Leong, Seth B. Dworkin
Summary: In order to tap into the significant potential of subsurface geothermal resources as a direct energy source, a novel foundation-based geothermal heat exchanger system has been proposed to reduce construction and installation costs.
Article
Green & Sustainable Science & Technology
Meghann Smith, Anthony Bevacqua, Sheryl Tembe, Pankaj Lal
Summary: Developing clean energy policies based on scientific research is essential for mitigating climate change risks. This study focuses on ground source heat pump (GSHP) systems as a means to reduce emissions in the buildings sector. Through life cycle analysis, it is found that GSHP systems operating in New Jersey have the potential to significantly reduce emissions, especially when compared to traditional heating methods. In addition to environmental benefits, GSHP systems also show economic advantages over fossil fuel-based heating systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Yubo Wang, Zhenhua Quan, Yaohua Zhao, Lincheng Wang, Zichu Liu
Summary: A novel solar-air source heat pump system is proposed to efficiently and stably supply heat in the cold area of North China by using the latent heat of water in the ice tank as the main low-temperature heat source, complemented by solar energy and outdoor air. The system can also be used for cooling in summer, and combined with night energy storage to minimize building operation energy consumption and cost. The optimized system shows efficient operation under extreme weather conditions and a dynamic investment payback period of 3.86 years, presenting a promising way to meet building energy supply in cold areas.
Article
Green & Sustainable Science & Technology
Florian Maranghi, Louis Gosselin, Jasmin Raymond, Martin Bourbonnais
Summary: Many subarctic communities heavily rely on fossil fuels for energy, but solar-assisted ground-coupled heat pumps (SAGCHP) can integrate renewable energy sources. However, it is unclear how such systems would operate in the high North with cold ground, mismatched insolation, and diesel electricity. This paper aims to model a SAGCHP heating a house in Nunavik, Canada to understand its potential and limitations. Simulations were conducted with and without battery storage, revealing complex tradeoffs between four modes of operation. Over ten years, the SAGCHP system reduced fuel consumption by 38.2% (without battery) and 59.1% (with battery).
Article
Thermodynamics
Yubo Wang, Zhenhua Quan, Heran Jing, Lincheng Wang, Yaohua Zhao
Summary: The study proposed a new type of dual-source building energy supply system, utilizing heat pumps and energy storage technology for cascade energy utilization. Peak load shifting and energy cost reduction were achieved by storing energy at night, resulting in efficient operation and savings in operating costs.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Sidney Green, John McLennan, Palash Panja, Kevin Kitz, Richard Allis, Joseph Moore
Summary: The Geothermal Battery Energy Storage concept aims to use solar radiance to heat water and store it underground, providing sustainable renewable energy when solar and wind power are insufficient, suitable for specific water-saturated sedimentary basin conditions.
Article
Green & Sustainable Science & Technology
Ziyuan Hu, Zongjun Gao, Xiqiang Xu, Shaoyan Fang, Liangyu Zhou, Deshuai Ji, Fuquan Li, Jianguo Feng, Min Wang
Summary: By studying geological data and water quality analysis data, the development and utilization of shallow geothermal energy in the urban area of Linqu County have been researched. The heat capacity of buried pipe ground source heat pumps is high, with higher heat transfer power in summer than in winter.
Review
Energy & Fuels
Chaofan Song, Yang Li, Taha Rajeh, Ling Ma, Jun Zhao, Wenjia Li
Summary: Ground source heat pumps (GSHPs) are a renewable energy technology known for their high efficiency, energy saving, economic feasibility, and environmental protection features. In China, GSHPs have been widely adopted for building heating and cooling, showing great potential for future energy development. This paper summarizes the classification, development history, and use status of shallow GSHPs, and also analyzes several typical engineering cases and illustrates promising development trends and advanced technologies.
PROTECTION AND CONTROL OF MODERN POWER SYSTEMS
(2021)
Review
Green & Sustainable Science & Technology
Sarah Noye, Ruben Mulero Martinez, Laura Carnieletto, Michele De Carli, Amaia Castelruiz Aguirre
Summary: Geothermal energy has great potential for CO2 reduction, but is underutilized due to high initial costs. Artificial Intelligence and Machine Learning play important roles in optimizing Ground Source Heat Pump control, achieving long-term performance and reduced payback time.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Sara Bordignon, Giuseppe Emmi, Angelo Zarrella, Michele De Carli
Summary: This paper introduces a new Type for simulating a reversible water-to-water heat pump and evaluates its performance under different refrigerants. By simulating the heating and cooling system under various climate conditions, the study demonstrates the long-term performance of the ground source heat pump and compares it with traditional refrigeration systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Wenke Zhang, Kexun Wang, Chunmin Guan, Haiqing Yao, Wenjing Li, Yuxue Gao, Ping Cui
Summary: This paper investigates the structural characteristics and energy equations of the U-type well, and analyzes the heat load and optimization of a building with a ground source heat pump system. The results demonstrate the significant improvement in performance achieved through optimization measures.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Francesca Ceglia, Elisa Marrasso, Carlo Roselli, Maurizio Sasso, Peter Tzscheutschler
Summary: This study analyzes a ground source heat pump with a combithermal storage using real components and a Hardware in Loop test bed. The results show that the performance of the ground source heat pump is affected by heating load, ground temperature, and heat pump supply temperature.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Youngguk Seo, Un-Jong Seo
Summary: The study on using geothermal energy supply for greenhouses showed promising results in field tests in South Korea, demonstrating increased income, shortened payback periods, and viability for investment.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Luis Salala, Jonathan Argueta, Noel Lopez, Osmany Aparicio, Diana Martinez, Pedro Santos, Arturo Quezada, Oziel Garcia, Jose Erazo, Hiroyuki Yamagishi, Noriyoshi Tsuchiya
Summary: Geothermal systems have significant potential to replace reliance on fossil fuels. El Salvador, being tectonically active, already supplies a significant portion of its electricity demand using volcanic geothermal fields. The study compares different geothermal areas in El Salvador and highlights the controlling factors in the characteristics of geothermal reservoirs.
Article
Energy & Fuels
Lin Jia, Kewen Li, Yun Han, Chi Zhang, Lipeng Zhao
Summary: This study proposes a new approach of retrofitting abandoned oil wells into geothermal wells, and investigates the effects of different parameters on the performance using a numerical model. The results show that the enhanced fracture system significantly improves the efficiency of geothermal energy extraction, and optimal design should control the flow rate and use proppant.
Article
Energy & Fuels
K. H. Kvalsvik, H. Holmberg, R. K. Ramstad, K. Midttomme
Summary: This study proposes a new analytical equation that takes into account the advective heat in fractured rock, improving the accuracy of measuring thermal properties in borehole heat exchangers. The equation is applicable to all thermal response tests and provides a cost-effective alternative to numerical modelling.
Article
Energy & Fuels
Ronald Dipippo
Summary: This paper presents a technique of further preheating the working fluid in geothermal binary plants using extraction turbines, and evaluates the performance at various geofluid temperatures through working equations. The results indicate that this approach can be equally effective in geothermal binary plants as it is in conventional nuclear power plants.
Article
Energy & Fuels
Y. A. Popov, E. M. Chekhonin, E. G. Savelev, D. A. Ostrizhniy, A. B. Shakirov, R. A. Romushkevich, E. A. Babich, B. E. Andreyev, M. Y. Spasennykh, I. A. Sannikova
Summary: This paper describes the results of experimental geothermal studies on the formation surrounding the Savitskaya-300 well in the Volga-Ural oil and gas basin. The study found high thermal heterogeneity and anisotropy in the formation. The paper provides important data on thermal properties and heat flow variations in the well.
Article
Energy & Fuels
Viren Thakore, Hong Wang, Jy-An Wang, Yarom Polsky, Fei Ren
Summary: This paper focuses on the stability of foam-based fracturing fluid under high temperature and high pressure conditions. It is of significant importance for the development of foam fracturing fluid as an alternative to conventional water-based fracturing fluid in Enhanced Geothermal System (EGS). Experimental results show that with the appropriate selection of surfactants and stabilizing agents, stable foams can be obtained. Analytical models are developed to predict the foam stability for different foam compositions, considering the effects of temperature and pressure.
Article
Energy & Fuels
Hong Chang, Sheng Jiang, Haozhi Jiang, Yunjie Li, Zhengheng Gan, Songying Zhao
Summary: This study compared the bearing performance between phase change energy piles (GPEP) and traditional energy piles (TEP) using indoor modeling tests and theoretical formulas. The results showed that GPEP increased the ultimate bearing capacity of a single pile by about 13% compared to TEP. Additionally, the phase change materials effectively restricted the temperature-drag response of energy piles.
Article
Energy & Fuels
Qiang Zhang, Tiago Alves
Summary: This study investigates the influence of salt structures and faults on the geothermal potential in the Cleaver Bank High, Southern North Sea, using high-quality 3D seismic reflection data and bottom-hole temperature data. The results show that salt structures and faults play a significant role in the geothermal gradient, with higher gradients found on the footwalls of faults. Three potential geothermal exploration targets are identified based on the findings.
Article
Energy & Fuels
Hubert Langevin, Nicolo Giordano, Jasmin Raymond, Louis Gosselin, Martin Bourbonnais
Summary: This study evaluates the efficiency and cost of solar-assisted geothermal systems in a subarctic climate, and offers recommendations for optimizing ground heat exchanger configurations.
Article
Energy & Fuels
Lei Chen, Jinchuan Zhang, Longfei Xu, Shijing Chen, Qianchao Li, Yuhang Sun, Jie Li, Xingxu Zhao
Summary: This study assesses the geothermal water circulation process of a granite geothermal system in the Lancang area, Yunnan using water chemistry and isotope analysis techniques. The results show that the geothermal water originates from atmospheric precipitation and the granite pluton serves as the main heat source. Additionally, the fault system plays an important role in the discharge and mixing of hot and cold water.
Review
Energy & Fuels
Md Azhar, Somenath Mondal, Anh Minh Tang, Akhileshwar K. Singh
Summary: Contemporary geotechnical engineering practice involves the design and construction of structures that encounter thermal cycles. Understanding the effect of temperature on soil mechanical properties is challenging, but there have been significant contributions from numerous studies. However, to date, there is no comprehensive review that provides a holistic development of the subject and its connection to field applications.
Article
Energy & Fuels
Mark White, Yaroslav Vasyliv, Koenraad Beckers, Mario Martinez, Paolo Balestra, Carlo Parisi, Chad Augustine, Gabriela Bran-Anleu, Roland Horne, Laura Pauley, Giorgia Bettin, Theron Marshall, Anastasia Bernat
Summary: The study presents a comprehensive numerical modeling of closed-loop geothermal systems (CLGSs) and develops a publicly accessible web application for feasibility studies. The results suggest that competitive levelized cost of heat (LCOH) can be achieved, but significant reductions in drilling costs are required to achieve competitive levelized cost of electricity (LCOE). A site-based case study for multi-lateral systems and the analysis of permeable wet rock are also provided, indicating the potential for improved power production with higher reservoir permeability and temperature.
Article
Energy & Fuels
Xiaoming Tian, Oleg Volkov, Denis Voskov
Summary: In this study, an efficient and flexible adjoint-based framework is proposed for history matching and forecasting geothermal energy extraction. The framework reduces the parameter space using Principal Component Analysis and speeds up the iteration process using the adjoint method. Operator-based linearization is used for efficient calculation and matrix assembly. The framework is demonstrated to be highly efficient for a heterogeneous reservoir with multiple realizations, generating reliable history-matching results.
Article
Energy & Fuels
Asrillah Asrillah, Agus Abdullah, Klaus Bauer, Ben Norden, Charlotte M. Krawczyk
Summary: At the Gross Scho center dot nebeck geothermal research platform in the NE German Basin, the degree and direction of azimuthal velocity anisotropy caused by sub-vertical fracturing were determined through analysis of 3-D seismic reflection data. The observed anisotropy above the Zechstein salt roughly correlates to fault structures formed by an upwelling salt pillow, while below the salt, the less pronounced anisotropy and interpreted fracturing follow the trend of the regional stress field.
Article
Energy & Fuels
Kyosuke Okamoto, Yusuke Mukuhira, Dian Darisma, Hiroshi Asanuma, Hirokazu Moriya
Summary: Microseismic monitoring is crucial in geothermal development, and manual phase picking for seismic data is time-consuming. Existing deep learning phase pickers may face challenges in geothermal fields due to their unique features. This study focuses on developing a specialized deep learning model for local seismic networks in geothermal fields, allowing automatic hypocenter determinations and revealing subsurface fine structures.