Article
Energy & Fuels
Ruby-Jean Clark, Mohammed Farid
Summary: The study demonstrates that a cascade thermochemical energy storage system can improve thermal and exergy efficiencies, with high energy density, power output, and temperature lift over a range of dehydration temperatures.
Article
Green & Sustainable Science & Technology
Zhixiong Ding, Wei Wu, Michael K. H. Leung
Summary: This study compares different absorption thermal battery cycles from various criteria perspectives, including energy storage efficiency, energy storage density, and exergy efficiency. The results show that the double-effect compression-assisted cycle can simultaneously improve energy storage efficiency and density and bridge the temperature gap. This is of great importance for achieving high-density and high-efficiency thermal energy storage.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Aman Gupta, Paul D. Armatis, Piyush Sabharwall, Brian M. Fronk, Vivek Utgikar
Summary: Thermochemical energy storage involves reversible chemical reactions for storing thermal energy, offering high energy density and low parasitic heat loss. Experiments on a Ca(OH)2/CaO TCES system showed high energy and exergy efficiencies in dehydration-hydration cycles.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Banumathi Munuswamy Swami Punniakodi, Ramanathan Kumar, Hrishiraj Anil Kumar, Ramalingam Senthil
Summary: This study investigates the use of different heat transfer tube configurations to improve the charging behavior of phase change materials. The results show that the vertical S-shaped heat transfer tube configuration effectively melts PCM and has higher energy efficiency compared to horizontal configuration.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Gabriele Humbert, Yulong Ding, Adriano Sciacovelli
Summary: This paper addresses the need to enhance heat and mass transfer in solid-gas reactive beds by proposing the use of branched fins made of high conducting material. The optimal fin designs are derived through surrogate models and the results show that the use of optimized branched fins can increase the discharged energy by up to +9.1%. However, in reactive beds where heat and mass transfer mainly occur along the same direction, bifurcations in the fins may hinder reactant transfer, reducing thermal performance.
Article
Thermodynamics
Mehmet Gursoy, Ibrahim Dincer
Summary: A unique integrated energy system driven by solar power is proposed in this study, which can provide power, hot water, cooling, and heating for residential buildings and greenhouses. The system's performance is evaluated using energy and exergy analysis, and the effects of changing various operating parameters are examined through parametric studies.
Article
Energy & Fuels
Hong Zhang, Ting Yan
Summary: Thermochemical sorption heat storage is a promising technology for thermal energy storage, which can improve the efficiency and flexibility of energy systems. This study evaluated the thermodynamic performance of sorption heat storage cycle with ammoniated salts using energy and exergy analysis methods, and found that SrCl2 and SrBr2 are the most promising materials. The overall energy efficiencies of SrCl2-NH3 and SrBr2-NH3 systems are 39.8% and 41.6%, respectively, and the corresponding overall exergy efficiencies are 17.3% and 13%.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Lin Lin, Liang Wang, Yakai Bai, Xipeng Lin, Shuang Zhang, Zhiwei Ge, Long Peng, Haisheng Chen
Summary: Thermal energy storage (TES) is an effective solution to the temporal mismatch between energy generation and users' requirements. The spray-type packed bed TES technology, with its high efficiency and low cost, shows promising development prospects. Experimental results indicate that the charging temperature and flow rate have minimal impact on the heat storage performance, and higher charging temperature and lower flow rate result in a more uniform temperature distribution.
APPLIED THERMAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Arda Yapicioglu, Ibrahim Dincer
Summary: In this study, a renewable energy-driven multigenerational system is developed to generate electricity, cooling, freshwater, and hydrogen. Solar and wind energy are combined with electric heating to heat sand particles, which are then pressurized and heated in a fluidized bed heat exchanger to produce electricity. The leftover steam is used for absorption cooling, freshwater production, and hydrogen generation. The energy can be stored in the form of sand for later use. The system is cost-effective and environmentally friendly, with energy and exergy efficiencies of 53.3% and 49.8%, respectively.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Energy & Fuels
R. Salgado-Pizarro, A. Calderon, A. Svobodova-Sedlackova, A. Fernandez, C. Barreneche
Summary: The research field of thermochemical energy storage has shown consistent growth, with a particular increase in research on sorption and chemical reaction heat storage. The analysis of publications and keywords provides valuable insights into the strengths and weaknesses of the field, as well as the evolving technology maturity. Notably, there has been a shift from a total dependence on funding for scientific output to a more diverse funding scenario in recent years.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Mert Temiz, Ibrahim Dincer
Summary: This study investigates a newly developed solar and wind-driven integrated energy system with energy storage option to achieve self-sufficiency for communities in a sustainable manner. By combining a wind farm and a linear Fresnel concentrated solar system with thermal energy storage, the system meets the non-thermal electricity, heat, and cooling demands of a community with 65,000 people.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Mariagrazia Pilotelli, Benedetta Grassi, Daniele Pasinelli, Adriano M. Lezzi
Summary: The addition of storage capacity to district heating systems increases flexibility and expands the range of usable heat sources. In this study, the performances of a 5000 m(3) thermal energy storage (TES) tank in a district heating network in Italy were analyzed. The energy and exergy efficiencies were found to be above 90%, and the thermocline profile remained stable throughout the cycle. However, short partial charge/discharge events followed by long stand-by periods negatively affected the performances.
Article
Energy & Fuels
K. Kant, A. Shukla, David M. J. Smeulders, C. C. M. Rindt
Summary: Thermochemical heat storage using potassium carbonate is an efficient and cost-effective approach to enhance solar energy utilization. Adjusting the geometric parameters of the heat exchanger can improve the reaction rate and heat transfer efficiency, enhancing the thermal transport of potassium carbonate fixed bed.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Aysenur Ozdemir, Gamze Genc
Summary: This paper presents an analysis of energy and exergy for a thermochemical hydrogen production facility based on solar power. Different thermochemical cycles are compared, and the use of a recompression S-CO2 Brayton power cycle is found to enhance system performance. The maximum achieved efficiency is 27%, and the energy and exergy efficiencies vary with solar radiation and concentration ratio. The solar energy unit is identified as the main source of exergy destruction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Boyu Li, Wenpeng Hong, Haoran Li, Jingrui Lan, Junliang Zi
Summary: Configuring a nanofluid spectrum splitter (NSS) with the thermally decoupled photovoltaic/thermal (PV/T) system is a feasible approach to achieve net-zero emissions. Results showed that higher nanoparticle concentration and NSS thickness enhance output thermal energy and solar utilization efficiency, and an optimized NSS thickness can improve thermal energy storage.
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.