Article
Thermodynamics
A. Tafuni, A. Giannotta, M. Mersch, A. M. Pantaleo, R. Amirante, C. N. Markides, P. De Palma
Summary: This paper presents a numerical study of a thermal solar plant using a seasonal dual-media sensible heat thermal energy storage system to supply the energy demand of a greenhouse in Italy. A low-cost pit storage system made of gravel and water was evaluated for its technical and economic performance. The study analyzed the charging and discharging phases based on real heating demand and weather data, and conducted a sensitivity analysis of the cost of heat with respect to collector area and storage volume. The results demonstrate the feasibility of dual-media thermal energy storage systems with solar collectors in reducing greenhouse emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Zhaozhao Gao, Wei Ji, Luna Guo, Xiaoyu Fan, Junjie Wang
Summary: A system that integrates combined cycle power plants and liquid air energy storage has been proposed to maximize the recovery of waste heat and cold energy, achieving bidirectional peak shaving. The efficiency of the system can reach 99.39%, making it economically preferable. Additionally, the economic performance of the system deteriorates as temperatures increase within the ranges studied for compressor and air turbine inlet temperatures.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
K. Owebor, E. O. Diemuodeke, T. A. Briggs
Summary: The study investigated the thermo-economic and environmental analysis of an integrated power system with carbon capture and storage, modeling key parameters and proposing CO2 capture and enhanced oil recovery strategies. Cost analysis showed a total cost of $186 million, CO2 avoidance cost of $110 per tonne, levelized cost of energy at $0.123 per kWh, and payback period of 5.2 years. The study also explored parametric simulations and highlighted the potential impact on energy policy and climate action landscapes.
Article
Thermodynamics
Gang Fan, Yiping Dai
Summary: By combining sCO(2) Brayton cycles with Kalina power cycles, this research improves the energy conversion efficiency of nuclear power plants. Through multi-objective optimization and control strategy comparisons, it is found that the RSC-Kalina cycle consistently outperforms the SSC-Kalina cycle, achieving higher efficiency under partial plant loads.
ENERGY CONVERSION AND MANAGEMENT
(2021)
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
Marko Aunedi, Antonio M. M. Pantaleo, Goran Strbac, Christos N. N. Markides, Abdullah A. Al Kindi
Summary: This study proposes upgrading nuclear power plants with thermal energy storage systems and secondary power generators to enhance their flexibility and cost-effectiveness. The overall system benefits of this configuration are quantified using a whole-system model, and cost savings in low-carbon scenarios are found.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Xiaoyu Fan, Wei Ji, Luna Guo, Zhaozhao Gao, Liubiao Chen, Junjie Wang
Summary: In the context of renewable energy development, a coupled system consisting of a thermal power plant and a liquid air energy storage (LAES) system is proposed. Technical and economic analysis is carried out to determine the optimal configuration and verify its economic benefits. The results show that the LAES subsystem can achieve a maximum round trip efficiency (RTE) of 93.74% at an extraction pressure of 242.00 bar. The optimal configuration has an RTE of 58.31% at an extraction pressure of 8.55 bar. The comprehensive efficiency of the system is 40.86%, which is about 1% higher than the standalone LAES system. The economic analysis reveals that the initial investment cost of the coupled system is 67.17% of the standalone LAES system, and the levelized cost of storage (LCOS) is 154.30 USD/MWh, 24.63% lower than that of the standalone LAES system, demonstrating outstanding economic benefits.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Francesco Rovense, Miguel Angel Reyes-Belmonte, Manuel Romero, Jose Gonzalez-Aguilar
Summary: This study analyzes a 150 MW, multi-tower solar-only combined cycle power plant using olivine particles as heat transfer fluid and thermal energy storage medium. Unitary 53.0 MWth solar tower was designed to meet technical constraints. Thermo-economic optimization determined optimal layouts and storage capacities.
Article
Thermodynamics
Qingqing Yong, Kaiyuan Jin, Xiaobo Li, Ronggui Yang
Summary: Combining pumped thermal electricity storage with existing thermal power plants, a novel system is designed with cascade heat storage. The thermodynamic analysis shows that the integrated system can achieve a round-trip efficiency of 0.53-0.56 under 60-100% output load. The economic analysis indicates a payback period of around 4 years. Further advancements in molten salts technology and compressors are required to reduce system costs.
Article
Thermodynamics
Giovanni Brumana, Giuseppe Franchini, Elisa Ghirardi, Antonio Perdichizzi
Summary: This paper presents a techno-economic optimization procedure for selecting the best energy mix of renewable energy sources to meet the power demands of an isolated community. The case study in Saudi Arabia demonstrates that implementing a complete renewable system can provide clean energy without a huge cost burden.
Article
Green & Sustainable Science & Technology
M. Fernandez-Torrijos, P. A. Gonzalez-Gomez, C. Sobrino, D. Santana
Summary: This study analyzed the creep-fatigue behavior of a supercritical CO2 central-receiver, revealing the significant impact of tube size and 2D modeling on creep-fatigue calculations. Results showed that smaller tube sizes allowed for higher heat flux, reducing design costs and improving overall efficiency of the solar power plant.
Article
Thermodynamics
Yinan Wang, Heng Chen, Tongyu Li, Peiyuan Pan, Rongrong Zhai, Gang Xu, Yuehong Dong, Zunkai Zhou
Summary: An advanced energy system combining a waste-to-energy plant, a coal-fired power plant, and a carbon capture and storage system was proposed. The system introduces a new approach to utilize municipal solid waste for carbon capture and storage systems, achieves high energy efficiency through heat integration design, and reduces investment costs by streamlining the equipment of the waste-to-energy plant. Analyzing the parameters and benefits of existing reference systems, the proposed system demonstrates improved net electric efficiency, increased electricity generation, and shortened payback period.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Heng Chen, Di Lu, Jizhen An, Shichao Qiao, Yuehong Dong, Xue Jiang, Gang Xu, Tong Liu
Summary: The integration of biomass gasification-based power generation, supercritical CO2 power cycle, and coal-fired power generation improves biomass utilization and achieves high energy efficiency. Thermodynamic and economic analysis shows that the design has good performance, short investment recovery time, and advantages in the field of biomass utilization.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Francesco Calise, Francesco L. Cappiello, Massimo Dentice D'Accadia, Maria Vicidomini
Summary: This work presents a novel renewable trigeneration plant powered by solar, geothermal and biomass energy, producing electricity, heat and cool simultaneously. A dynamic simulation model was developed to calculate energy and economic performance, with a case study showing promising energy performance in a residential building in Naples, Italy. The proposed plant achieves a primary energy saving of 139% but has limited profitability due to high capital costs.
Article
Energy & Fuels
Gemma Gasa, Cristina Prieto, Anton Lopez-Roman, Luisa F. Cabeza
Summary: This study compares the environmental impacts of tower solar thermal plants with different storage capacities and finds that increasing the storage capacity reduces the environmental impacts, but the reduction becomes smaller when the storage capacity reaches a certain level. The plant with a 9-hour storage capacity is the most environmentally efficient among the four plants analyzed.
JOURNAL OF ENERGY STORAGE
(2022)
Correction
Energy & Fuels
Jose M. Rodriguez, David Sanchez, Gonzalo S. Martinez, El Ghali Bennouna, Badr Ikken
Article
Chemistry, Multidisciplinary
Francesco Crespi, David Sanchez, Gonzalo S. Martinez, Tomas Sanchez-Lencero, Francisco Jimenez-Espadafor
APPLIED SCIENCES-BASEL
(2020)
Editorial Material
Chemistry, Multidisciplinary
Jeong Ik Lee, David Sanchez
APPLIED SCIENCES-BASEL
(2020)
Article
Thermodynamics
F. Crespi, P. Rodriguez de Arriba, D. Sanchez, A. Ayub, G. Di Marcoberardino, C. M. Invernizzi, G. S. Martinez, P. Iora, D. Di Bona, M. Binotti, G. Manzolini
Summary: This paper investigates the use of dopants to increase the critical temperature of Carbon Dioxide (sCO(2)), aiming to maintain high thermal efficiencies of sCO(2) cycles. It explores the impact of CO2-based mixtures on power block performance and considers hexafluorobenzene (C6F6) and titanium tetrachloride (TiCl4) as possible dopants. The results show that CO2-blends with specific dopant percentages enable efficiencies exceeding 50% even at high ambient temperatures.
Article
Engineering, Chemical
Rafael Gonzalez-Almenara, Pablo Rodriguez de Arriba, Francesco Crespi, David Sanchez, Antonio Munoz, Tomas Sanchez-Lencero
Summary: This study investigates the use of supercritical carbon dioxide cycle as an alternative for solar desalination in CSP plants, showing that high efficiency cycle layouts can reduce energy consumption, but their application is significantly influenced by ambient conditions and water quality standards.
Article
Engineering, Chemical
Blanca Petit, Eva Sanchez-Carceller, Jesus Montes-Sanchez, Rafael Gonzalez-Almenara, David Sanchez
Summary: The development of desalination has primarily focused on energy consumption and cost reduction, but water recovery and brine disposal have become important issues. This study proposes a Zero Liquid Discharge (ZLD) system coupled with a Solar Micro Gas Turbine (SMGT) to address challenges faced by the mining industry in remote areas. Techno-economic analysis and sensitivity analysis were conducted to evaluate the feasibility and design of the system.
Article
Green & Sustainable Science & Technology
Pablo Rodriguez-deArriba, Francesco Crespi, David Sanchez, Antonio Munoz, Tomas Sanchez
Summary: This paper focuses on the thermodynamic comparison between pure supercritical Carbon Dioxide and blended transcritical Carbon Dioxide power cycles. The study shows that blended CO2 cycles have higher efficiency and lower performance degradation in high temperature environments.
Article
Thermodynamics
Salma I. Salah, Francesco Crespi, Martin T. White, Antonio Munoz, Andrea Paggini, Marco Ruggiero, David Sanchez, Abdulnaser I. Sayma
Summary: The utilization of blends based on supercritical CO2 (sCO2) has shown a promising potential for enhancing power cycle performance in concentrated solar power (CSP) applications. This study investigates the impact of these sCO2-based blends on the design of a multi-stage axial turbine, considering aerodynamic, mechanical, and rotordynamic considerations. The results suggest that high-efficiency turbines can be achieved with these non-conventional working fluids, with total-to-total turbine efficiencies exceeding 92%.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Giuseppe Tilocca, David Sanchez, Miguel Torres-Garcia
Summary: Micro Gas Turbines (MGTs) are small devices used for on-site power and heat generation, but their commercialization has not met expectations. This study applies the Theory of Constraints to the MGT industry, identifying root causes of the lack of commercial success through constraint analysis. The authors suggest combining market-driven innovation and commercialization as a long-term solution, but acknowledge limitations in their proposed methodology and solutions.
Article
Thermodynamics
Rafael Gonzalez-Almenara, Lourdes Garcia-Rodriguez, Antonio Munoz, Tomas Sanchez, David Sanchez
Summary: This study explores the potential of using Solar micro Gas Turbines (SmGTs) to produce electric power and heat for desalination in off-grid locations. The study provides a detailed modeling procedure and methodology and analyzes the performance of the system under different conditions. The implementation of innovative features in the SmGT improves part-load operation and increases efficiency. The study also discusses the water treatment system, including a Reverse Osmosis unit and a Zero Liquid Discharge unit.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Francesco Crespi, Pablo Rodriguez de Arriba, David Sanchez, Antonio Munoz
Summary: This study explores the potential of using Carbon and Sulphur Dioxide mixtures in a transcritical Recompression cycle, showing it to be a high-efficiency option for Concentrated Solar Power plants.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.