Review
Green & Sustainable Science & Technology
Krishna Hara Chakravarty, Meisam Sadi, Harapriya Chakravarty, Ali Sulaiman Alsagri, Thomas James Howard, Ahmad Arabkoohsar
Summary: The building industry heavily relies on vapor absorption chillers (VAC) for cooling, which has potential for energy efficiency and emission reductions. By integrating VAC with various renewable energy sources, such as geothermal, biomass, and solar, there is significant potential for clean and sustainable cooling solutions in the future.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
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.
Review
Energy & Fuels
Haohua Chen, Ingrid Tomac
Summary: This review paper summarizes recent developments in geothermal exploitation using coaxial deep borehole heat exchangers (DBHE). The paper discusses field tests, analytical and semi-analytical approaches, and numerical simulations. Future work should focus on long-term performance, effects of groundwater flow, technology for larger diameter boreholes, new materials for insulated inner pipe, treatment of fluid and different working fluids, and economic analysis. Analytical methods and numerical simulations should consider the dependence of fluid and formation properties on pressure and temperature. Optimizing borehole properties and pump parameters, using an insulated inner pipe, and modeling an intermittent working pattern could improve the performance of DBHE.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Review
Green & Sustainable Science & Technology
R. V. Rohit, R. Vipin Raj, Dennis C. Kiplangat, R. Veena, Rajan Jose, A. P. Pradeepkumar, K. Satheesh Kumar
Summary: This paper investigates different aspects of geothermal energy research, including heat transfer, thermophilic microorganisms, 3D printing, and additive manufacturing, and their impact on the NET ZERO initiative. Computational social network analysis is used to identify subfield clusters and trace the evolutionary paths of geothermal energy research. The study reveals various areas of focus, such as geothermal evaluation, borehole heat exchangers, urban ground heating, enhanced geothermal systems, geothermal fluids, environmental effects, and social acceptability. The research concludes that further R&D and technological advancements are needed to promote wider acceptance and usage of geothermal energy as a clean energy source, but it is not a universal solution to global energy needs.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Chemical
Jesus Octavio Rubalcaba Velasco, Alexis Acuna Ramirez, Jammin Abdi Quintal Lopez, Abelardo Mercado Herrera, Jose Alejandro Suastegui Macias, Adolfo Heriberto Ruelas Puente, Fernando Lara Chavez, Pedro Francisco Rosales Escobedo, Jose Armando Corona Sanchez
Summary: This study presents the results of using the TRNSyS 2017 simulator as a simulation tool, which is validated with experimental data from a greenhouse in an arid zone in northwestern Mexico. It also provides experimental data on the performance of geothermal heat pumps in heating and cooling mode in the year 2020. Through this study, it is found that the simulator has an average deviation of 2.77% for the outlet fluid temperature of the geothermal heat exchanger (GHE) and an average deviation of 3.7% for the coefficient of performance in cooling mode (EER) of the geothermal heat pump (GHP). Additionally, the study identifies the optimal flow rate for the GHE to achieve the highest performance of the GHP system in greenhouses in arid zones, which is 1 GPM and results in an EER of 3.24.
Article
Economics
A. McClean, O. W. Pedersen
Summary: Geothermal energy has the potential to play a key role in decarbonizing building heating in the UK, but it is currently underutilized due to a lack of clear regulatory framework and financial support. This article identifies the environmental and financial risks of geothermal energy and recommends reform of the regulatory regime to address these issues. It also highlights the need for financial incentives to encourage the growth of the geothermal energy industry.
Review
Green & Sustainable Science & Technology
Nacer Lebbihiat, Abdelmalek Atia, Muslum Arici, Noureddine Meneceur
Summary: Algeria has relatively abundant low-enthalpy geothermal resources, with balneology being the main utilization field. Despite the large potential and resources available, geothermal energy development in Algeria has remained almost stagnant over the past two decades.
JOURNAL OF CLEANER PRODUCTION
(2021)
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
Green & Sustainable Science & Technology
Fernando Montesdeoca-Martinez, Sergio Velazquez-Medina
Summary: This paper presents an energy planning model for the electrical system of Tenerife, analyzing the potential of integrating non-dispatchable renewable energy sources, particularly wind and solar photovoltaic, with dispatchable geothermal energy. The simulations show that geothermal energy could meet up to 28.8% of the island's electricity demand, increasing system stability and supply guarantee. Furthermore, incorporating these energy sources could result in significant economic savings for Spain's electrical system.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Civil
Miguel Angel Marazuela, Alejandro Garcia-Gil, Eduardo Garrido, Juan C. Santamarta, Noelia Cruz-Perez, Thilo Hofmann
Summary: The increasing use of shallow geothermal energy in urban areas is compromising geothermal energy availability and groundwater quality. This study proposes a novel methodology based on polar coordinates to assess the impact of shallow geothermal installations on urban aquifers. The results demonstrate the effectiveness of this methodology in evaluating thermal impacts and facilitating thermal management in cities.
JOURNAL OF HYDROLOGY
(2022)
Article
Thermodynamics
M. Soltani, Pooya Farzanehkhameneh, Farshad Moradi Kashkooli, Armughan Al-Haq, Jatin Nathwani
Summary: The study optimized parameters of geothermal heat pump (GHP) system using genetic algorithm, reducing installation costs and improving energy efficiency over a ten-year simulation. Ethylene glycol was identified as the preferred circulating fluid for significant energy consumption reduction.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Environmental Sciences
Bohong Wang, Jiri Jaromir Klemes, Petar Sabev Varbanov, Khurram Shahzad, Mohammad Reda Kabli
Summary: This paper explores the performance of integrating geothermal energy in the Locally Integrated Energy Sector (LIES), using visual tools like Grand Composite Curves and Total Site Profiles to optimize energy utilization. It also demonstrates significant savings in steam utility load under specific conditions, showcasing the potential of using renewable energy sources in a sustainable manner.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Environmental Sciences
Abhir Dashputre, Aluru Kaushik, Aparajita Pal, Dhruv Jariwala, Kriti Yadav, Manan Shah
Summary: Desalination is a proven method to obtain clean water from the ocean, but it requires a significant amount of energy. This paper focuses on thermoeconomically optimized multi-effect distillation and geothermal desalination systems, which utilize clean and renewable geothermal energy to produce power and desalinate water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Mitul Prajapati, Manan Shah, Bhavna Soni
Summary: By 2040, India aims to complete its energy supply transformation to meet the country's growing energy demands. While there is significant potential in geothermal energy resources in India, they have not been fully utilized and require further research and development.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Eric O'Shaughnessy, Jenny Heeter, Chandra Shah, Sam Koebrich
Summary: Corporations are the fastest growing source of renewable energy demand in the United States and other key markets, with over 200 large global corporations committing to more aggressive renewable energy targets. Increasing corporate procurement could change the deployment of renewable energy assets, increase the need for flexible grid assets, and challenge formal grid planning and cost allocation.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Zvonimir Guzovic, Neven Duic, Antonio Piacentino, Natasa Markovska, Brian Vad Mathiesen, Henrik Lund
Summary: Following the Paris Agreement in 2015 and subsequent agreements, sustainable energy development has become a major goal for many countries. To achieve this, three major technological changes are available: energy savings on the demand side, efficiency improvements in energy production, and replacement of fossil fuels with renewable sources. The support of multidisciplinary scientific knowledge is also needed. Therefore, a series of conferences focusing on Sustainable Development of Energy, Water and Environment Systems (SDEWES) have been established since 2002. This paper provides an overview of research published in special issues of leading journals dedicated to these conferences, focusing on energy policy and analysis, energy savings in buildings, integrated heating and electricity systems, biomass for energy, and measurement of energy and environmental sustainability.
Article
Green & Sustainable Science & Technology
Susana Paardekooper, Henrik Lund, Jakob Zinck Thellufsen, Nis Bertelsen, Brian Vad Mathiesen
Summary: In order to support the transition of heating systems in Europe, this article proposes a typology of four heat sector types based on the analysis of 14 national heating strategies. The article highlights the importance of energy efficiency and local circumstances in the transition process.
Article
Energy & Fuels
V. Battaglia, G. De Luca, S. Fabozzi, H. Lund, L. Vanoli
Summary: The study aims to develop possible scenarios for achieving sustainable energy conditions and decarbonization in the Campania Region. By reducing greenhouse gas emissions and relying on renewable energy sources, the region can achieve its decarbonization objective. The study used a new classification method based on climatic zones to design an integrated renewable energy system and various software tools for evaluation and implementation.
ENERGY STRATEGY REVIEWS
(2022)
Article
Thermodynamics
Poul Alberg Ostergaard, Sven Werner, Anders Dyrelund, Henrik Lund, Ahmad Arabkoohsar, Peter Sorknaes, Oddgeir Gudmundsson, Jan Eric Thorsen, Brian Vad Mathiesen
Summary: Research on new advanced district heating concepts has been increasing since the definition of the first four generations of district heating in 2014. The fourth generation, which includes cross-sectoral integration into smart energy systems, has provided a framework for potential futures in district heating. To create a similar framework for district cooling, this paper defines the four generations of district cooling, which includes the development of different cooling systems and their integration with other energy sectors.
Article
Green & Sustainable Science & Technology
Henrik Lund, Iva Ridjan Skov, Jakob Zinck Thellufsen, Peter Sorknaes, Andrei David Korberg, Miguel Chang, Brian Vad Mathiesen, Mikkel Strunge Kany
Summary: This paper aims to identify the role of sustainable bioenergy in achieving the Danish government's goals of reducing 70% of CO2 emissions and reaching a fully decarbonised society. The presented methodology and approach are relevant for other countries heading in the same direction. The focus is on developing sustainable biomass resources and conversion technologies within the energy and transport sectors, paired with carbon capture utilisation and storage, to coordinate with other sectors and achieve a fully decarbonised society.
Article
Energy & Fuels
Meng Yuan, Peter Sorknaes, Henrik Lund, Yongtu Liang
Summary: This paper provides a comprehensive analysis of the bidding strategies of large-scale Li-ion batteries in 100% renewable smart energy systems. The results show that large-scale battery storage plays a limited role in future energy systems that follow the smart energy system concept. The findings of this study provide general strategies for battery bidding and operation in 100% RE systems.
Editorial Material
Thermodynamics
Henrik Lund, Poul Alberg ostergaard, Neven Duic, Brian Vad Mathiesen
Review
Green & Sustainable Science & Technology
P. A. Ostergaard, H. Lund, J. Z. Thellufsen, P. Sorknaes, B. V. Mathiesen
Summary: Energy systems analyses play a crucial role in transitioning towards renewable energy-based energy systems. This article examines the validity and contribution of EnergyPLAN through a comprehensive analysis of its applications and findings. The study reveals the widespread use of EnergyPLAN across different systems and stages of development, and highlights important insights obtained through its application.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Zvonimir Guzovic, Neven Duic, Antonio Piacentino, Natasa Markovska, Brian Vad Mathiesen, Henrik Lund
Summary: This paper presents an overview of researches in the field of emissions reduction and energy, contributing to the achievement of the goals of the Paris Agreement.
Article
Thermodynamics
Miguel Chang, Henrik Lund, Jakob Zinck Thellufsen, Poul Alberg Ostergaard
Summary: Energy system models are crucial for planning the energy transition and understanding its impacts. However, because of the complexity of this transition, one model alone is often insufficient. Therefore, linking different model classes has become a common practice to gain insights about the energy system. While previous literature has focused on proposing structures for multi-model analyses or including specific aspects from other knowledge domains, there is a lack of high-level overview of model coupling. This article provides an outlook on coupling ESM paradigms and model coupling with other knowledge dimensions, highlighting the importance of purpose-driven model coupling for answering specific questions about the energy transition.
Article
Chemistry, Physical
Andrei David Korberg, Jakob Zinck Thellufsen, Iva Ridjan Skov, Miguel Chang, Susana Paardekooper, Henrik Lund, Brian Vad Mathiesen
Summary: This paper analyzes the feasibility of using hydrogen as a direct fuel in all energy sectors in a 100% renewable energy system for Europe in 2050. The results indicate that using hydrogen for heating purposes is costly and inefficient, while hydrogen for electricity production is only beneficial in limited quantities due to losses. In the transport sector, hydrogen is an expensive alternative to liquid e-fuels and electrified transport due to high infrastructure costs and low energy efficiency. In the industry sector, hydrogen may be beneficial for reducing biomass at a lower cost, but electrification and e-methane may be more feasible options.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Rasmus Magni Johannsen, Brian Vad Mathiesen, Katerina Kermeli, Wina Crijns-Graus, Poul Alberg Ostergaard
Summary: This paper presents the use of the tool IndustryPLAN to replace fossil fuels with renewable energy in the European industrial sector. The results show that known technologies can decarbonise most of the industry, but limiting bioenergy consumption is a critical challenge. A full transition to renewable energy requires sustainable investments from 2030 onwards and full decarbonisation of grid electricity.
Article
Thermodynamics
Steffen Nielsen, Poul Alberg ostergaard, Karl Sperling
Summary: The energy transition relies on the electrification of heating, transportation, and industry and the exploitation of renewable energy sources. This changes the geography of the energy system, shifting from centralized production to distributed generation. However, this transition poses challenges to the grid system, with increased point demands and the need for improved coordination between local and national levels. A study in Denmark reveals that grid limitations hinder industrial development, highlighting the importance of considering national targets and coordinating across administrative levels.
Article
Energy & Fuels
Brian Vad Mathiesen, Rasmus Magni Johannsen, Katerina Kermeli, Wina Crijns-Graus, Henrik Lund, Iva Ridjan Skov
Summary: The green transition of industry is crucial for achieving the goals of the Paris Agreement. This paper introduces seven guiding principles and a freeware tool, IndustryPLAN, to quantify and implement strategies for the decarbonization of industry. The tool enables specific analyses of climate mitigation measures and resilience against fuel, electricity, and technology price fluctuations. The combination of the guiding principles methodology and the IndustryPLAN tool identifies significant energy savings and the potential for full decarbonization with a 100% renewable energy supply for industry.
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
