Article
Thermodynamics
Chenyang Fan, Zhe Cui, Ji Wang, Zijian Liu, Wende Tian
Summary: This study focuses on optimizing the global energy of PGS systems using CLC technology and exergy analysis to address carbon deposition issues. By increasing OC circulation rate, optimizing key parameters, and designing control schemes using transfer entropy method, the system performance and stability are improved.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Zhuang Sun, Muhammad Aziz
Summary: The study proposed a novel biomass direct chemical looping combustion driven tri-generation system with high energy and exergy efficiencies, which was compared with syngas CLC driven systems.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Fan Zhang, Lin Zhu, Yuan Wang, Ling Sun
Summary: CLHG is a hydrogen production process with great prospects, focusing on overall energy efficiency and exergy efficiency; this study proposes a new evaluation tool and provides guidance for system improvement by studying the relationship between quantity and quality during energy conversion, also establishing a better energy matching relationship in the integrated system of CG and CLHG.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Zhang Xiaosong, Chen Zhewen, Chen Zhenbin, Li Jinsong
Summary: This study proposed a novel energy system integrating chemical-looping hydrogen generation and solid oxide fuel cell, achieving efficient utilization of methane and higher net efficiency. The cascade utilization of waste heat and high-efficiency hydrogen production are the main reasons for the system's high performance, allowing CO2 recovery without energy penalty.
JOURNAL OF THERMAL SCIENCE
(2021)
Article
Engineering, Environmental
Laron Burrows, Pu-Xian Gao, George M. Bollas
Summary: The paper explores intensified Chemical looping for Ammonia Synthesis (CLAS) as a process suitable for remote deployment at Stranded Natural Gas (SNG) sites, aiming to address the challenges in utilizing SNG. By systematically evaluating CLAS, promising chemical loops such as Ca3N2/CaH2, SrH2/Sr3N2, MnO2/Mn5N2 and MoO2/Mo2N are found, indicating potential for further research towards a distributed ammonia synthesis solution.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
M. M. Sarafraz, F. C. Christo
Summary: This paper develops a CO2-neutral thermodynamic process based on a chemical looping principle for producing ammonia and/or hydrogen by circulating nitrogen carrier between reactors. Suitable metal candidates, with chrome showing the best nitrogen and steam economy, were selected through thermochemical analysis. With chrome, a power block efficiency of 32.3% and a self-sustaining factor of 0.33 were achieved.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Amro M. O. Mohamed, Yusuf Bicer
Summary: A novel thermochemical cycle based on Boron is used to produce ammonia in combination with chemical looping combustion process. The system achieves efficient production of NH3 and electricity, with a significant reduction in greenhouse gas emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Orlando Palone, Gabriele G. Gagliardi, Marco Mechelli, Luca Cedola, Domenico Borello
Summary: This study conducted a techno-economic analysis on a novel plant configuration that combines the production of ammonia and methanol through chemical looping. The innovative process offers advantages in terms of reduced dependency on market price fluctuations and optimal utilization of chemical looping gases. By using recycled high density polyethylene, the chemical looping plant enhances the carbon circularity of the process. The results show lower CO2 emissions and energy intensity compared to traditional processes, but the final selling price of the products is still not competitive.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Chemical
Wende Tian, Haoran Zhang, Zhe Cui, Xiude Hu
Summary: This paper presents a system integrating MMA production and coal chemical looping gasification technology (CCLG-MMA) for energy saving and low emission. The research uses MD simulation and steady-state simulation to verify the feasibility of the system, showing that it meets CO2 emission standards and has lower energy consumption compared to traditional processes.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Jing Fang, Chuhao Xiong, Mingqian Feng, Ye Wu, Dong Liu
Summary: Ammonia has potential as a fuel and energy carrier due to its transportability and cleanliness. A highly efficient system based on chemical looping ammonia generation (CLAG) is proposed, which can generate ammonia with reduced carbon emissions and produce valuable by-products such as steam, carbon monoxide, and urea.
Review
Chemistry, Multidisciplinary
Enkang Fu, Feng Gong, Sijun Wang, Rui Xiao
Summary: Ammonia is an efficient and clean hydrogen carrier that can address energy and environmental issues. Chemical looping technology allows the separate nitridation and hydrogenation processes to achieve mild ammonia synthesis based on renewable energy. This review introduces the concept and mechanism of chemical looping ammonia production and comprehensively summarizes the state-of-art research.
Article
Engineering, Chemical
Xin Pan, Jingjing Ma, Xiude Hu, Qingjie Guo
Summary: The study introduced a model of hydrogen production by double chemical looping and investigated the efficiency benefit obtained. It was found that connecting the chemical looping hydrogen generation unit in series to the downstream of a chemical looping gasification unit increased hydrogen production efficiency compared to independent systems. The study also analyzed the economic estimation and factors influencing ammonia production cost.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Zhuang Sun, Shukun Wang, Muhammad Aziz
Summary: An integrated system was developed to produce ammonia and power simultaneously using biomass as feedstock. By utilizing self-heat recuperation-based drying, the system achieved a high energy-saving ratio of up to 93.4% compared to traditional drying methods. Exergy and exergoeconomic analyses revealed the energy efficiency and cost reduction potential of the system, emphasizing the importance of reducing costs for specific components like refrigerators and pressure-changing components. The unit costs of ammonia and electricity were determined to be 29 USD/GJ and 140 USD/GJ, respectively, under the initial input parameters.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
Xuesheng Yan, Honglin Liu, Ming Luo, Jianjun Cai, Ruicong Shen
Summary: An integrated hydrogen and power co-generation system based on slurry-feed coal gasification and chemical looping hydrogen generation (CLH) with Shenhua coal as fuel and Fe2O3/MgAl2O4 as an oxygen carrier was proposed. The system's main units were analyzed to optimize the parameters. The syngas can be fully converted in the fuel reactor, and both the fuel reactor and steam reactor can maintain heat balance. The purity of the produced hydrogen is 100% after water condensation. Energy and exergy analyses were conducted, and pinch technology was used to design the heat transfer network.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Panagiotis Alexandros Argyris, Jared Wong, Andrew Wright, Luis M. C. Pereira, Vincenzo Spallina
Summary: A thorough techno-economic analysis compared inherent carbon capture with state-of-the-art blue hydrogen production configurations. The study simulated and compared advanced solvent-based technologies with the emerging chemical looping process. The results showed that the chemical looping reforming process had higher net reforming efficiency, lower energy for CO2 avoidance, and lower cost of hydrogen, making it a promising technology for hydrogen production.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Chaohe Zheng, Jie Cao, Yongliang Zhang, Haibo Zhao
Review
Energy & Fuels
Haibo Zhao, Xin Tian, Jinchen Ma, Xi Chen, Mingze Su, Chaohe Zheng, Yanan Wang
Editorial Material
Energy & Fuels
Haibo Zhao, Hongguang Jin, Laihong Shen, Zhenshan Li
Article
Energy & Fuels
Chaohe Zheng, Hengfeng Bu, Fan Yang, Zuwei Xu, Haibo Zhao
Summary: In this study, the photocatalytic properties of TiO2-supported CuO nanoclusters with different sizes were investigated using an ab initio method. Small clusters were found to have higher charge separation efficiency, while large clusters showed better light-absorption performance. The research highlights the importance of cluster size in promoting photocatalytic reactions.
Article
Energy & Fuels
Yanan Wang, Hengfeng Bu, Haibo Zhao, Kunlei Liu
Summary: Solid fuel chemical looping gasification technology requires the development of low-cost, easily available oxygen carrier particles, with Cu/Fe-based OCs from waste ore particles and bauxite residues showing promise for coal gasification. Among these OCs, red mud and Cu20Fe80@C exhibit better gasification performance and potential for Fischer-Tropsch synthesis and H-2-rich chemical synthesis. The study also reveals the importance of lattice oxygen donation capacity and alkali metal content in determining coal and char gasification rates.
Article
Chemistry, Multidisciplinary
Xin Tian, Chaohe Zheng, Fanxing Li, Haibo Zhao
Summary: This study investigates Co and/or Mo doped Fe2O3 as redox catalysts for ODH of ethane, showing different ethane conversion and ethylene selectivity based on the molar ratio of Co/(Co + Mo). Tuning the molar ratio can achieve high ethylene selectivity at 56.2% ethane conversion, with Co playing a role in activity and H-2 combustion capability, and Mo affecting ethylene selectivity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Energy & Fuels
Xing Yuan, Chaohe Zheng, Haibo Zhao
Summary: The study demonstrates that the influence of hybrid CuOx components on TiO2 can enhance the efficiency of photothermocatalytic oxidation reactions, mainly due to higher lattice oxygen activity and reduced oxygen vacancy formation energy. Additionally, essential synthesis parameters such as precursor flux are evaluated to further improve the performance of photothermocatalytic oxidation.
Article
Nanoscience & Nanotechnology
Xing Yuan, Lingquan Meng, Chaohe Zheng, Haibo Zhao
Summary: The study synthesized a series of nanostructured SiTiO3 perovskites with B-site partial substitution by Co, Fe, Mn, Ni, and Cu using flame spray pyrolysis in one step, finding that SrTi0.5Co0.5O3 exhibited the highest catalytic activity due to favorable oxygen vacancies, outstanding reducibility, and oxygen desorption capability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Hengfeng Bu, Guoping Chen, Xin Tian, Han Du, Jinchen Ma, Haibo Zhao
Summary: The study found that different grades of iron ore exhibit diverse oxygen-carrying capacity in chemical looping combustion; the gasification rate of coal char plays a crucial role in the adaptability to oxygen carriers; iron ore with Fe2O3 content in the range 70-80 wt % shows the best adaptability towards the conversion of coal char with different ranks.
Article
Engineering, Environmental
Xing Yuan, Lingquan Meng, Zuwei Xu, Chaohe Zheng, Haibo Zhao
Summary: The study investigated the influence of loading active copper components onto perovskites and essential operating parameters in flame aerosol synthesis to optimize the catalytic efficiency for the complete oxidation of lean CO and CH4. The CuO-SrTiO3 nanocatalysts exhibited optimal catalytic performance with precursor flow rate of 3 mL/min and CuO loading of 15 mol %. The excellent performance is attributed to the low-temperature reducibility of CuO quantum dots and metal-support interaction on SrTiO3 perovskite support.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Lulu Li, Yanan Wang, Hengfeng Bu, Zuwei Xu, Haibo Zhao
Summary: In order to achieve carbon peak and carbon neutrality, low-carbon combustion technologies are urgently needed in China. Chemical looping combustion has been identified as one of the most promising methods for low-carbon, efficient, and clean utilization of coal. This study developed a low-cost composite oxygen carrier and evaluated its performance in combustion tests using lignite as fuel. The results showed that the composite oxygen carrier exhibited better combustion performance compared to pure red mud. Additionally, increasing the temperature improved carbon capture efficiency, while the effect on CO2 yield was relatively small. Furthermore, increasing the oxygen/fuel ratio led to higher carbon capture efficiency and CO2 yield.
Editorial Material
Energy & Fuels
Haibo Zhao
Article
Engineering, Chemical
Cheng Shang, Zhijing Su, Song He, Zuwei Xu, Frank Einar Kruis, Haibo Zhao
Summary: This study combines computational fluid dynamics and population balance-Monte Carlo method (CFD-PBMC) to develop an accurate method for describing the spatiotemporal evolution and characteristics of dispersed systems. A efficient sub-model for particle migration is proposed to simulate the convection and diffusion processes. Several classical cases are simulated and compared with the classical weighted random walk method, showing good agreements except for radial migration. The measured speedups on the GPU are significantly higher compared to a standard high-performance computer, with a factor of about 450 for pure migration and about 50 for the CFD-PBMC method.
Article
Energy & Fuels
Xinyi Chen, Guangsheng Zou, Yanliang Yuan, Zuwei Xu, Haibo Zhao
Summary: The research investigates the use of Ni-doped nano-Fe/Ce oxygen carriers for the chemical looping dry reforming of methane. Thermodynamic analysis and reaction simulation are conducted on the CL-DRM process with iron-based oxygen carriers. The experimental results show that the Ni-doped Fe/Ce oxygen carriers achieve high performance and stable cyclic stability due to the high dispersion of Ni and the transformation of Fe oxides and CeO2.
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.