Article
Energy & Fuels
Cristina Prieto, Francisco Javier Pino, Luisa F. Cabeza
Summary: This study evaluates the technoeconomic potential of a CSP plant with high temperature concrete as TES system compared to the standard commercial molten salts system, and finds that the molten salt system performs better than the high temperature concrete configuration in general conditions.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Krzysztof Sornek, Maciej Zoladek, Karolina Papis-Fraczek, Maciej Szram, Mariusz Filipowicz
Summary: The electricity generation from photovoltaic systems has experienced significant growth over the past two decades. The use of concentrating solar power collectors is an interesting trend in solar radiation conversion. This paper presents experimental works on a micro-scale parabolic-through solar concentrator equipped with monocrystalline silicon solar cells. Results show that concentrated sunlight can enhance the efficiency of photovoltaic solar cells by approximately 29% compared to direct sunlight. This study demonstrates the justification for using solar radiation concentrators in solar installations, even with low concentration ratio factors.
Article
Chemistry, Physical
Ayhan Atiz, Hatice Karakilcik, Mustafa Erden, Mehmet Karakilcik
Summary: The study investigates an integrated system for electricity and hydrogen production, with energy and exergy analyses. The system includes various solar collectors, flash turbine, organic Rankine cycles, reverse osmosis unit, water electrolysis unit, greenhouse, and medium temperature geothermal resource. By upgrading the fluid temperature from geothermal resources, clean water, hydrogen, and electrical energy are generated. The overall energy and exergy efficiencies of the system are found to be 10.43% and 9.35% respectively.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
L. G. Redelinghuys, C. McGregor
Summary: This study examines the application of a Carnot battery in a conventional parabolic trough concentrating solar power plant. The results show that under certain conditions, imported renewable energy is stored at the expense of solar thermal energy, leading to unnecessary overcharging of the storage. The study also finds that smaller-sized parabolic trough solar fields can reduce and delay solar thermal curtailment caused by heater integration.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Qiliang Wang, Boxu Shen, Junchao Huang, Honglun Yang, Gang Pei, Hongxing Yang
Summary: A novel parabolic trough solar receiver integrated with vanadium dioxide-based thermochromic coating was proposed to reduce radiant heat loss and improve overall performance. Comprehensive heat transfer models were established and validated for high accuracy in predicting thermal performance. The thermochromic coating showed unique advantages in improving thermal performance of the solar receivers under both M phase and R phase, resulting in reduced heat loss and improved thermal efficiency.
Article
Energy & Fuels
Richard Felsberger, Armin Buchroithner, Bernhard Gerl, Bernhard Schweighofer, Hannes Wegleiter
Summary: The study introduces a new design and retrofit approach for a concentrated photovoltaic thermal system based on a parabolic trough collector, which employs a simplified topology and hybrid absorber equipped with multi-junction solar cells to achieve high electrical efficiency at reduced costs. Tests on the scaled prototype in Graz, Austria, showed average system efficiency of 75.5%, with peak solar cell efficiency reaching 30%, showcasing the potential for cost reduction in CPV-T systems.
Article
Thermodynamics
Ali Sharifi, Amin Eskandari
Summary: This study presents a hybrid solar-geothermal power plant that can produce power, heating, and cooling. The plant utilizes a flash-binary geothermal cycle, parabolic trough solar collectors, an auxiliary heater, a single-effect LiBr-water absorption chiller, and heat exchangers. It was found that the solar-geothermal power plant has energy and exergy efficiencies of 10.78% and 23.1% respectively. The study also revealed that most of the exergy destruction in the plant occurs inside the solar collectors and auxiliary heaters. Increasing the solar beam irradiance can improve the total exergy efficiency and reduce the constant heat input to the cycle.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Green & Sustainable Science & Technology
Qiliang Wang, Gang Pei, Hongxing Yang
Summary: The novel parabolic trough solar receiver with a radiation shield, based on the theory of the negative thermal-flux region, shows great potential for significant enhancement of the techno-economic performance of solar power plants, improving electrical energy production and reducing the levelized cost of energy.
Article
Thermodynamics
Ceyhun Baydar, Yildiz Koc, Hueseyin Yagli, Ali Koc, Tolga Depci, Mustafa Kemal Ayguen
Summary: The present study aimed to provide an analysis methodology for manufacturers and users to detect deficiencies and probable improvements for a geothermal power plant. Analyses were applied to the plant regarding energy, exergy, economic and environmental aspects. The study suggested using water-cooled condensers instead of air-cooled condensers for the cooling processes and designing a pump system to increase organic fluid pressures up to partially higher pressures for improved system performance. Additionally, the effect of integrating a superheater to bring the organic fluid to the superheated vapor phase at the turbine inlet needs to be analyzed.
Article
Thermodynamics
Inigo Ortega-Fernandez, Ana Belen Hernandez, Yang Wang, Daniel Bielsa
Summary: This study investigates the use of a packed bed thermal energy storage system for small-scale concentrated solar power plants, aiming to improve dispatchability and cost-effectiveness. The system utilizes Magnetite ore as heat storage media and Delcoterm Solar E15 thermal oil as heat transfer fluid, demonstrating potential in thermal performance and affordability.
Article
Thermodynamics
Guangli Fan, Yingjie Gao, Hamdi Ayed, Riadh Marzouki, Yashar Aryanfar, Fahd Jarad, Peixi Guo
Summary: The study shows that adding a recovery section to a single flash geothermal cycle can significantly improve system performance, increasing thermal efficiency, exergy efficiency, and overall output, while also reducing LCE from an economic perspective.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Ali M. Aqlan, Musaed Aklan, Abdulmalik E. Momin
Summary: This study aims to develop a single solar still that is directly connected with a solar parabolic trough and does not utilize any heat exchanger. Through field experiments, it was found that the overall water productivity of the modified solar still increased by 177% compared to the conventional still. The study also proposed future investigation of a step-shaped conical unit for the same device, which appears more promising and easier to handle, install, and maintain.
Review
Thermodynamics
Reyhaneh Loni, Omid Mahian, Gholamhassan Najafi, Ahmet Z. Sahin, Fatemeh Rajaee, Alibakhsh Kasaeian, Mehdi Mehrpooya, Evangelos Bellos, Willem G. le Roux
Summary: The study reviews and discusses the detailed application of geothermal-driven ORC systems for power generation, with an emphasis on their use in cogeneration, trigeneration, and polygeneration units. Optimization of geothermal-fed ORC systems can lead to a 20% to 30% increase in performance. This research suggests that polygeneration systems incorporating geothermal-driven ORCs are promising units with high exergy efficiency values.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Thermodynamics
Santosh Kumar Singh, Arun Kumar Tiwari, H. K. Paliwal
Summary: This study presents a solar powered hybrid power system using MXene-based nanofluid, which shows improved work utilization and energy efficiency. Although the overall cost is slightly higher compared to the Syltherm 800-based system, the MXene/Syltherm 800-based solar field has a slightly lower Levelized cost of electricity (LCOE) and shorter payback period.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Review
Green & Sustainable Science & Technology
Alibakhsh Kasaeian, Koosha Mirjavadi, Peyman Pourmoghadam, Faezeh Asgari Sima, Yasaman Amirhaeri, Sara Borhani, Leila Fereidooni
Summary: This paper provides a detailed review of the literature on parabolic trough collectors (PTC) combined with organic Rankine cycles (ORC). It examines various aspects such as modeling and simulation, optimization, exergy, economics, and experimental studies. The review also highlights the impact of different parameters on the performance of the proposed systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Gianluca Valenti, Aldo Bischi, Stefano Campanari, Paolo Silva, Antonino Ravida, Ennio Macchi
Summary: Experimental and numerical study of a small-size commercial Stirling unit in cycling operations showed that an optimized operating strategy led to a significant reduction of daily startups and energy savings.
Article
Green & Sustainable Science & Technology
Federico D'Amore, Matteo Carmelo Romano, Fabrizio Bezzo
Summary: Carbon capture and storage plays a key role in decarbonising the power and industry sectors. Optimisation of the supply chain is crucial for the widespread implementation of these technologies. A Europe-wide carbon capture and storage supply chain has been optimised using a mixed integer linear programming framework.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Thermodynamics
Marco Astolfi, Edoardo De Lena, Francesco Casella, Matteo Carmelo Romano
Summary: The study focuses on the potential application of calcium looping CO2 capture system in coal-fired power plants, comparing two different CaL systems and analyzing the role and economic benefits of sorbent storage systems. It is found that the secondary storage system can provide more flexible grid services and reduce the capital cost of CaL systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Dario Alfani, Marco Binotti, Ennio Macchi, Paolo Silva, Marco Astolfi
Summary: This paper focuses on the potential of supercritical carbon dioxide closed cycle for waste heat recovery applications, demonstrating the advantages of sCO2 technology in industrial waste heat recovery through analysis and optimization of cycle configurations, performance assessment, and cost-effectiveness.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Alessandro Poluzzi, Giulio Guandalini, Simone Guffanti, Cristina Elsido, Stefania Moioli, Patrick Huttenhuis, Glenn Rexwinkel, Emanuele Martelli, Gianpiero Groppi, Matteo C. Romano
Summary: This paper assesses the optimal design criteria of a flexible power and biomass to methanol (PBtM) plant, and concludes that a larger reactor design is preferable for cost reduction and flexible operation brings significant advantages in scenarios with high penetration of intermittent renewables.
Article
Green & Sustainable Science & Technology
Edoardo De Lena, Borja Arias, Matteo C. Romano, J. Carlos Abanades
Summary: This study investigates a Calcium Looping (CaL) configuration for cement plants using two interconnected circulating fluidized bed (CFB) reactors. The proposed system combines calcination and fragmentation of limestone in a single unit, taking advantage of the limestone's tendency to attrition. The economic analysis shows that this configuration is competitive.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
A. Poluzzi, G. Guandalini, S. Guffanti, M. Martinelli, S. Moioli, P. Huttenhuis, G. Rexwinkel, J. Palonen, E. Martelli, G. Groppi, M. C. Romano
Summary: This article presents a comparative analysis of three different biomass to methanol plants based on various gasification technologies. By integrating electrolysis units with biomass gasification plants, the competitiveness of biofuels can be increased. The study examines the techno-economic aspects of operating the plants without and with hydrogen addition, and evaluates the cost-effectiveness and flexibility of each design.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Francesco Magli, Maurizio Spinelli, Martina Fantini, Matteo Carmelo Romano, Manuele Gatti
Summary: This paper evaluates the technical and economic performance of the CO2 Purification Unit (CPU) for cement plants equipped with oxyfuel-based CO2 capture. Two different outlet CO2 specifications are designed, modelled, and optimized to minimize the incremental clinker production cost. The results show that the air infiltration rate has a significant impact on the cost increase and optimal operational conditions.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Editorial Material
Energy & Fuels
Matteo C. Romano, Cristina Antonini, Andre Bardow, Valentin Bertsch, Nigel P. Brandon, Jack Brouwer, Stefano Campanari, Luigi Crema, Paul E. Dodds, Stefania Gardarsdottir, Matteo Gazzani, Gert Jan Kramer, Peter D. Lund, Niall Mac Dowell, Emanuele Martelli, Luca Mastropasqua, Russell C. McKenna, Juliana Garcia Moretz-Sohn Monteiro, Nicola Paltrinieri, Bruno G. Pollet, Jeffrey G. Reed, Thomas J. Schmidt, Jaap Vente, Dianne Wiley
Summary: This paper responds to a previous study on blue hydrogen, highlighting the method and assumptions used. By analyzing the mass and energy balances of two blue hydrogen plants, the impact of methane leakage rate on the CO2 emissions is shown. The study concludes that blue hydrogen can have significantly lower CO2 emissions with proper CO2 capture technologies and low-emission natural gas supply chains.
ENERGY SCIENCE & ENGINEERING
(2022)
Article
Thermodynamics
Federico d'Amore, Andrea Nava, Paolo Colbertaldo, Carlo G. Visconti, Matteo C. Romano
Summary: This study discusses the effectiveness of carbon capture and utilization technologies for separating and converting CO2 into chemical products via electrochemical processes. It challenges the use of CO2 from fuel combustion for the synthesis of electro-fuels and proposes alternative pathways.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
M. Astolfi, M. E. Diego, M. Romano, J. C. Abanades
Summary: This study analyzes the performance of a back-up power process using a novel chemical looping packed bed air reactor. The reactor slowly oxidizes the solids by a diffusion-controlled flow of oxygen, resulting in long oxidation times. Integration of the dynamic system formed by the reactor and the power plant is investigated for decarbonization of energy production and storage of renewable energy. Different case studies are assessed, and gas turbines in various power plant architectures are investigated. The use of biogas during the energy charge stage is found to be advantageous, leading to negative CO2 emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Federico d'Amore, Luis M. C. Pereira, Stefano Campanari, Matteo Gazzani, Matteo C. Romano
Summary: This study investigates the performance of an H2 production plant equipped with molten carbonate fuel cell for CO2 capture, achieving higher capture rates and potentially lower costs compared to benchmark.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Sebastian Quevedo Parra, Matteo C. Romano
Summary: This study presents the techno-economic assessment of four electrified cement plants, finding that all the electrified alternatives achieve high levels of CO2 emissions avoidance. The partially electrified alternatives showed competitive costs, although higher than the best CO2 capture technologies from the literature.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Alessandro Poluzzi, Giulio Guandalini, Matteo C. Romano
Summary: This study conducts a techno-economic analysis of bio-methanol and bio-hydrogen production plants coupled with carbon capture and storage, and evaluates the economic impact of multi-product flexible plants. The results show that the energy efficiency is little affected by different gasification technologies and CO2 capture processes. A higher CO2 capture rate can be achieved via pre-combustion capture process, while post-combustion capture process can achieve higher CO2 capture efficiency. Flexible production plants have higher investment costs but offer potential advantage from the financial risk perspective.
SUSTAINABLE ENERGY & FUELS
(2022)
Proceedings Paper
Automation & Control Systems
Federico d'Amore, Matteo C. Romano, Fabrizio Bezzo
Summary: This paper proposes an optimization method for carbon capture and storage chains based on mathematical programming techniques, focusing on decarbonization in the steel, cement, and refining sectors. By analyzing the facility layout and transport arrangements in Europe, the study examines the operation and cost-effectiveness of carbon capture systems over different time periods.
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.
