Article
Engineering, Environmental
Wenwen Wei, Shi Liu, Xinyu Li, Linhu Li, Wen Cao
Summary: In this study, a self-thermal supercritical water gasification system was developed to convert antibiotic residues into high-purity H2 and electrical power, achieving clean and efficient energy conversion. The system demonstrated high H2 yield and net electrical power at optimal operating conditions, along with high energy efficiency and exergy efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Physical
Chuang Yang, Shuzhong Wang, Yanhui Li, Yishu Zhang, Chengchao Cui
Summary: This study investigates the thermodynamic equilibrium analysis of supercritical water gasification involving different feedstocks like coal, sewage sludge, microalgae, and sawdust. The results show that temperature and feed concentration play a crucial role in determining hydrogen yield, while pressure has minimal effects. An optimal feed concentration of 15-20 wt% is found for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Changyifan Ren, Dianqi Hu, Yunan Chen, Liejin Guo
Summary: An auto-thermal supercritical water co-gasification system was developed for H2 and heat production from sewage sludge and coal. Thermodynamic analysis and life cycle environmental impact assessment were performed, showing the sensitivity of H2 yield to the proportion of preheated water and dry coal to dry sewage sludge. Adding 21% dry coal was necessary when the system was energy self-sufficient to treat sewage sludge directly.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Agricultural Engineering
Adrian Chun Minh Loy, Hatem Alhazmi, Serene Sow Mun Lock, Chung Loong Yiin, Kin Wai Cheah, Bridgid Lai Fui Chin, Bing Shen How, Suzana Yusup
Summary: This study examined the environmental footprints of H-2 production via catalytic gasification of wheat straw using straw-derived biochar catalysts. The hot spots in the process were identified, with product separation unit (P4) having the greatest environmental impact. The proposed biochar catalyst showed similar catalytic performance with metal-based catalysts but with lower environmental impact, as indicated by benchmarking analysis.
BIORESOURCE TECHNOLOGY
(2021)
Article
Thermodynamics
Jia Liu, Nan Hu, Li-Wu Fan
Summary: The novel power generation system based on coal gasification in supercritical water shows great potential in meeting China's increasing energy demands. The stable and complete oxidation of hydrogen in the supercritical water oxidation reactor is crucial. Optimal design parameters for the reactor include diameter, axial length, and oxygen ratio. Analysis of enthalpy and exergy flow distributions revealed a total exergy destruction of only about 6.29%.
Article
Chemistry, Physical
Huan Liu, Shuqin Liu
Summary: This study compares energy consumption and greenhouse gas emissions between underground coal gasification (UCG)-based hydrogen production (UCG-H-2) and surface coal gasification (SCG)-based hydrogen production (SCG-H-2) using life cycle assessment. Results show UCG-H-2 has significant energy saving advantage, and 80% capture rate can achieve a balance between energy consumption and emissions. Scenario analysis suggests UCG substitution for hydrogen production can reduce energy consumption significantly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Kexin Yin, Ranran Wei, Jiuxu Ruan, Peizhe Cui, Zhaoyou Zhu, Yinglong Wang, Xinling Zhao
Summary: This study proposes a multi-objective assessment method to evaluate the entire life cycle of medical supplies, focusing on surgical masks, from an environmental and economic perspective. The results show that the energy consumption and environmental impacts are mainly concentrated in the collection, pretreatment, gasification, and waste heat recovery stages. Operating costs have a significant impact and using automatic equipment and improving energy consumption are crucial for reducing system costs.
Article
Green & Sustainable Science & Technology
Jingwei Chen, Yang Liu, Xiaomin Wu, Jiaqiang E, Erwei Leng, Feng Zhang, Gaoliang Liao
Summary: This paper investigates the thermodynamic and environmental performance of supercritical water gasification for hydrogen production using residue from a simultaneous saccharification and fermentation (SSF) process. The results show that increasing temperature and decreasing residue concentration can enhance the hydrogen production rate. Additionally, two methods to improve energy efficiency, including recycling waste heat and reheating cycle, are proposed.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Huifang Feng, Yifei Ren, Chao Fan, Libo Lu, Wenwen Wei, Hui Jin, Liejin Guo
Summary: Regulation study on coal gasification process in supercritical water (SCW) can promote hydrogen production and upgrading of coal utilization. This study investigated the regulation mechanism of liquid organics on coal gasification in SCW using ReaxFF molecular dynamics simulation. Phenols were found to have a positive effect, increasing H-2 number by 34%. The study also explored the intermolecular interaction and reactive sites, finding that E-vdWaals is the main driving force. Experimental results validated the feasibility and guidance value of the study.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Zhiyong Peng, Jialing Xu, Siqi Rong, Kui Luo, Libo Lu, Hui Jin, Qiuyang Zhao, Liejin Guo
Summary: In this paper, a novel process modeling for the Multi-component supercritical thermal fluid (MCSCTF) generation system was developed based on the supercritical water gasification (SCWG) of oilfield wastewater, and the environmental impact of the system was evaluated using the life cycle assessment (LCA) methodology. The use of segmented air supply and rational heat exchangers distribution improved the exergy efficiency and reduced the Global Warming Potential (GWP). The sensitivity analysis showed that optimizing system parameters can further improve the exergy efficiency and reduce the GWP.
Article
Chemistry, Physical
Jia Chen, Le Wang, Zening Cheng, Libo Lu, Liejin Guo, Hui Jin, Deming Zhang, Runyu Wang, Shanke Liu
Summary: The article introduces a self-sustaining gasification system for coal using supercritical water gasification and oxidation of gasification products, achieving high hydrogen production efficiency by optimizing reactant flow rates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Huaitao Zhu, Gongnan Xie, Han Yuan, Sandro Nizetic
Summary: This paper investigates the performance optimization of the supercritical carbon dioxide Brayton combined cycles, proposing a new system performance parameter and comparing different working fluids for the bottom cycle. The study finds that the S-CO2/ORC combined cycle with R32 and ammonia as the working fluids achieves the best performance, and superheating the organic working fluids can improve the cycle's isothermal efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Ahmad Hosseinzadeh, John L. Zhou, Xiaowei Li, Morteza Afsari, Ali Altaee
Summary: This study conducted a techno-economic and environmental impact assessment of major hydrogen production processes. Dark fermentation showed better technological performance, but hybrid dark fermentation with photo-fermentation and MEC had higher performance. Gasification and fermentation were the cheapest methods, with fermentation having the lowest environmental impact. Gasification was identified as the most mature and commercially viable application.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Shutaro Takeda, Hoseok Nam, Andrew Chapman
Summary: This paper presents a comparative analysis of solar-driven hydrogen production and introduces a novel hydrogen production process named SABI-Hydrogen, which has the potential for continuous operation and scalability. Solar-driven hydrogen production from biomass shows lower carbon emissions compared to the current biomass gasification process. Therefore, solar-driven hydrogen production from biomass could be a sustainable solution for hydrogen supply.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Na Wu, Kai Lan, Yuan Yao
Summary: BECCS is a potential solution for addressing climate change and regional wildfires, and supporting circular economy. The study shows that forest residue-derived hydrogen is economically competitive and only BECCS can provide carbon-negative hydrogen, which is more favorable regarding human health impact and near-term economics.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Review
Thermodynamics
E. Jiaqiang, Bo Luo, Dandan Han, Jingwei Chen, Gaoliang Liao, Feng Zhang, Jiangjun Ding
Summary: This study discusses methods to improve combustion efficiency, including optimization of spatial structure, catalytic combustion, and fuel improvement. It also reviews the improvement of energy conversion and emission performance of micro thermophotovoltaic, micro thermoelectric, and micro engine systems. The study points out the limitations of single optimization methods and suggests that future research should combine the advantages of various methods.
Article
Thermodynamics
E. Jiaqiang, Bin Zhang, Yan Zeng, Ming Wen, Kexiang Wei, Zhonghua Huang, Jingwei Chen, Hao Zhu, Yuanwang Deng
Summary: This paper investigates the essence of inconsistency in lithium-ion batteries as State-Of-Charge (SOC) inconsistency, proposing a method to describe battery inconsistency using SOC disparity and studying the equalization control strategy. Through simulations and experiments, it is shown that active equalization significantly improves cell inconsistency and enhances energy utilization in the battery pack during charging and discharging processes. The proposed SOC estimation method meets accuracy requirements, and the equalization strategies effectively minimize SOC and voltage disparities among battery cells.
Article
Engineering, Environmental
Jingwei Chen, Tian Meng, Qiteng Wang, Yu Bai, E. Jiaqiang, Erwei Leng, Feng Zhang, Gaoliang Liao
Summary: Epoxy resin is a common pollutant in electronic wastes, and improper disposal poses threats to the environment and human health. Supercritical water gasification technology is a clean and efficient method for treating and decomposing epoxy resin, and studying its gasification characteristics in supercritical water is of great significance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jingwei Chen, Qiteng Wang, Hongda Wei, Tian Meng, E. Jiaqiang, Erwei Leng, Feng Zhang, Gaoliang Liao
Summary: Polyvinylidene fluoride (PVDF), as a thermoplastic fluoropolymer, is widely used as a binder in lithium batteries. However, PVDF has difficulty in natural degradation. Supercritical water (SCW) conversion, a clean and efficient conversion technology, is considered for the degradation of PVDF. Molecular dynamics method was used to analyze the effects of different reaction parameters on the decomposition of PVDF in SCW.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Jing Li, Wei Zuo, Jiaqiang E, Yuntian Zhang, Qingqing Li, Ke Sun, Kun Zhou, Guangde Zhang
Summary: A multi-objective optimization study of a mini U-channel cold plate with SiO2 nanofluid was conducted using Response Surface Methodology (RSM) and Non-dominated Sorting Genetic Algorithm (NSGA-II). Numerical investigations were performed to optimize design variables and objective functions, with analysis of variance used to verify the reliability of the regression models. The optimal design parameters and performance indicators were obtained through Pareto optimal solution.
Article
Thermodynamics
Yuntian Zhang, Wei Zuo, E. Jiaqiang, Li Jing, Qingqing Li, Ke Sun, Kun Zhou, Guangde Zhang
Summary: In this study, an inclined channel cold plate was designed for a LiFePO4 battery in an electric vehicle, and its performance was compared with that of a straight channel cold plate under different conditions. The results showed that the inclined channel cold plate outperformed the straight channel cold plate, and the performance improved with a larger inclined angle. This study suggests that the inclined channel cold plate is more suitable for battery thermal management systems.
Article
Engineering, Aerospace
Liang Yin, E. Jiaqiang, Jie Ding
Summary: This study investigated the combustion characteristics of a splash platelet injector and analyzed the influence of its structural parameters. The results showed nonuniform temperature distribution near the injector faceplate and the formation of large corner recirculation zones. The combustion length decreased as the nondimensional parameter increased. The nozzle space had some impact on the combustion characteristics, while the scale factor had little effect on the component and temperature distribution.
JOURNAL OF AEROSPACE ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Jingwei Chen, Yang Liu, Xiaomin Wu, Jiaqiang E, Erwei Leng, Feng Zhang, Gaoliang Liao
Summary: This paper investigates the thermodynamic and environmental performance of supercritical water gasification for hydrogen production using residue from a simultaneous saccharification and fermentation (SSF) process. The results show that increasing temperature and decreasing residue concentration can enhance the hydrogen production rate. Additionally, two methods to improve energy efficiency, including recycling waste heat and reheating cycle, are proposed.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Gaoliang Liao, Yuntao Du, Feng Zhang, E. Jiaqiang, Jingwei Chen, Erwei Leng
Summary: In this paper, the Widom lines for supercritical CO2 are constructed using equation of state (EoS) and molecular dynamics (MD) simulation. Different equations of state and CO2 models are proposed and applied to predict the various thermodynamic properties. The results show that the Peng-Robinson (PR) series equations of state play better performance in predicting the thermodynamic properties.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Jingwei Chen, Yu Bai, Tian Meng, Qiteng Wang, Chenxi Wang, E. Jiaqiang
Summary: This study investigates the decomposition mechanisms of amoxicillin in supercritical water through molecular dynamics simulation. The results show that amoxicillin undergoes carbon ring opening, carbon chain breaking, and small molecular compound conversion in supercritical water. The OH radical plays a vital role in the decomposition process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Zhiwei Shi, Qingguo Peng, Jiaqiang E, Bo Xie, Jia Wei, Ruixue Yin, Guang Fu
Summary: This article systematically reviews the modification methods of catalysts in selective catalytic reduction (SCR) technology, analyzes the effects of various catalyst parameters on denitrification efficiency, and discusses the influences of spatial structure on catalytic effect. Additionally, it compares the performance of catalysts with different components and summarizes the current problems in catalyst research. The development of NH3-SCR technology is also prospected.
Article
Engineering, Mechanical
Hanqing Guan, Kexiang Wei, Wengui Mao, Qingbo He, Hongxiang Zou
Summary: This paper proposes a new type of active bump-metal mesh foil bearing (AB-MFB) that improves the shortcomings of traditional gas foil bearings by controlling radial preloads and increasing structural damping. The accuracy of the model is validated through experimental tests, and the effects of different parameters on the dynamic performance of AB-MFB are discussed.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Xiaofeng Geng, Hu Ding, Xingjian Jing, Xiaoye Mao, Kexiang Wei, Liqun Chen
Summary: This paper proposes a new nonlinear, non-contact magnetic force to limit the large vibration of the nonlinear energy sink (NES) oscillator. The dynamic characteristics of the magnetic-enhanced NES (ME-NES) are analyzed through experiments and numerical simulations, and the impact on the oscillator is summarized. The results show that the limiting effect of nonlinear magnetic force is better than that of linear force, and the proposed non-contact ME-NES is a reliable and efficient vibration reduction strategy.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Thermodynamics
Hongyan Zuo, Jingwei Liang, Bin Zhang, Kexiang Wei, Hong Zhu, Jiqiu Tan
Summary: An innovative hybrid data-driven estimation method is proposed to accurately and reliably estimate the state-of-health (SOH) using failure feature extraction. Influencing factors on lithium-ion power battery failure are studied, and three failure features are extracted using fuzzy grey relational analysis (FGRA) as inputs for the estimation model. The improved Least Squares Support Vector Machine (LSSVM) model is then applied to estimate the SOH under different ambient temperature conditions. Results show that the proposed method has higher accuracy compared to SVM, with estimation errors less than 0.02 and a mean square error accuracy of 0.00001.
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)
