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28 February 2026, Volume 14 Issue 1
    

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  • Simulation Study of Sludge Pyrolysis Coupled with Chemical Looping Combustion Based on Aspen Plus
    ZHONG Fagen, WU Tianhao, HUANG Zhen, LIN Yan, CHEN Xinfei, WEI Xiaoyu
    Advances in New and Renewable Energy. 2026, 14(1): 1-9. https://doi.org/10.3969/j.issn.2095-560X.2026.01.001
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Chemical looping combustion (CLC) can achieve high efficiency and clean utilization of sludge pyrolysis gas by high efficiency CO2 capture and removal of pollutant elements by oxygen carrier. Based on this, this paper proposes a sludge treatment technology of pyrolysis coupled with CLC, which uses Aspen Plus to simulate and optimize the energy and material flows of the technology, and discusses the influence of different conditions on the system's energy efficiency. The results show that heat recovery and utilization after the CLC cycle can achieve self-balance of the system's internal heat. Appropriately increasing the drying degree of sludge, pyrolysis temperature, CLC temperature, and oxygen excess coefficient of oxygen carrier can improve the energy efficiency of the system, but too high CLC temperature (> 1 300 °C) will lead to a decrease in energy efficiency. When the pyrolysis temperature is 600 °C, the sludge moisture content after drying is 0%, the CLC temperature is 1 300 °C, and the oxygen excess coefficient of the oxygen carrier is 1.1, the system's energy efficiency reaches 32.74%. Simulating sludge working condition provides a scientific basis for the efficient and clean utilization of sludge as a resource and lays the foundation for follow-up research.
  • Effect of Methanogenic Microbial Community on Anaerobic Semi-Dry/Dry Digestion Performance of Corn Stalk
    LIANG Xinyi1, 2, 3, 4, LI Jiachen2, 3, 4, 5, CHEN Le2, 3, 4, LI Ying2, 3, 4, SUN Yongming2, 3, 4, †
    Advances in New and Renewable Energy. 2026, 14(1): 10-16. https://doi.org/10.3969/j.issn.2095-560X.2026.01.002
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Anaerobic dry fermentation faces challenges of high substrate concentration, slow fermentation initiation, and low methane production efficiency. Targeted addition of microorganisms for bioaugmentation is an effective method to solve these challenges. To explore the effect of bioaugmentation on the performance of anaerobic dry fermentation of corn stalks, the propionate-utilizing methanogenic bacteria, as the bioaugmentation inoculum, were introduced into batch anaerobic semi-dry/dry fermentation of straw. The study showed that different doses of bioaugmentation could promote anaerobic fermentation gas production. When the total solid content was 15%, bioaugmentation could increase the cumulative methane yield by 1-7 times, and the cumulative methane yield was positively correlated with the amount of microbial agent. When the inoculum dosage was set at 7.5%, the bioaugmentation methane production efficiency showed the best performance, reaching 199.77 mL/g (calculated on a volatile solids basis), and the methanogenic efficiency  increased by 5.41 times. After increasing the total solid content to 20%, the bioaugmentation inoculum could continue to improve the methanogenic efficiency, and compared with the blank control group, bioaugmentation could still accelerate the initiation of anaerobic dry fermentation. The modified Gompertz equation showed varying doses of methanogenic inoculum could effectively shorten the start-up lag period and increase the methane yield. However, the introduction of high-dose bioaugmentation agents may reduce the bioaugmentation efficiency. Considering the economic efficiency of bioaugmentation, the optimal addition amount of bioaugmentation agents for the biological methane conversion of corn straw is 6% (0.36 g/L).Above all, in a high-solids fermentation system, targeted bioaugmentation with microbial agents can accelerate reactor start-up and improve anaerobic fermentation performance.
  • Numerical Study and Optimization of a Bionic Leaf Vein-Inspired Flow Field for Enhanced Oxygen Expulsion in Proton Exchange Membrane Electrolysis Cell
    YANG Mingfeng, HUANG Bo, ZHOU Tianjun, XU Shen
    Advances in New and Renewable Energy. 2026, 14(1): 17-25. https://doi.org/10.3969/j.issn.2095-560X.2026.01.003
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    Proton exchange membrane electrolysis cell (PEMEC) plays a pivotal role in clean hydrogen production, yet suboptimal flow field designs often hinder their efficiency. This study introduces a bionic flow field inspired by natural leaf vein patterns to enhance oxygen expulsion efficiency. Computational fluid dynamics simulations coupled with the Taguchi method were employed to investigate the effects of split channel width, inclination angle, and branch number on key performance indicators, including oxygen output, pressure drop, and gas volume fraction. Among the nine configurations analyzed, the optimal design featured a 1.0 mm channel width, a 20° inclination angle, and no branches. This configuration significantly improved oxygen expulsion efficiency, reduced pressure drop, and minimized gas volume fraction. The findings provide practical insights into optimizing flow-field designs for PEMEC, advancing efficient and sustainable hydrogen production technologies.
  • Green Performance Evaluation of Typical Recycling Technologies for Retired New Energy Devices
    SUN Sihan, ZHANG Shuhao, HUANG Ruxia, GU Jing, YUAN Haoran
    Advances in New and Renewable Energy. 2026, 14(1): 26-35. https://doi.org/10.3969/j.issn.2095-560X.2026.01.004
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    A green performance evaluation method for the recycling technology of retired new energy devices was developed based on life cycle assessment and cost-benefit analysis. This paper selected waste graphite anode purification technology as the research object and analyzed its green performance by establishing connections between the economic and environmental systems. The results indicate that during the full life cycle of the waste graphite anode purification technology, the life cycle assessment calculation is 7.33 million yuan, and the net present value is 16.30 million yuan. The green performance value over 15 years is 55.02%, reflecting a relatively high green performance efficiency for the enterprise. The results of this study can provide a reliable tool and methodology for related research and practices in the field of recycling retired new energy devices.
  • Capacity Configuration of Liquid Air Energy Storage-Water Electrolysis for Hydrogen Production-Synthesis Ammonia System
    ZHANG Beiyuan, YU Boxu, LIAO Zhirong, JU Xing
    Advances in New and Renewable Energy. 2026, 14(1): 36-42. https://doi.org/10.3969/j.issn.2095-560X.2026.01.005
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    As a new type of energy storage technology, liquid air energy storage can play the role of “peak shaving to fill in the valley” and reduce the wind and light abandonment phenomenon of renewable energy power generation. It can provide low-cost, stable power for the hydrogen production from electrolytic water, which can cope with the volatility of renewable energy power generation. This technology can be used to synthesize ammonia from green hydrogen produced by electrolytic water, which can reduce the use of and reliance upon chemical raw materials. In this paper, a liquid air energy storage-water electrolysis for hydrogen production-synthesis ammonia (LAES-WEH-SA) system is constructed based on the above idea, and the optimal capacity configuration is derived from the optimization calculation. The calculation is conducted by the Yalmip-Gurobi toolbox. The results show that the optimal benefit is achieved when configuring 180 MW of photovoltaic, 400 MW of wind power, 600 MW of liquid air energy storage, and 150 MW of electrolyzer. The configuration and scheduling scheme for this coupled system can well meet user loads, reduce abandonment of wind and solar power, and deliver good economic and energy-saving benefits. Specifically, its annual net income is about 32.77 million yuan, its annual ammonia production is about 49 202 t, and its reduction in power abandonment rate is about 6.1%.
  • Synthesis of Two-Dimensional Sb Anode and Its Potassium Storage Performance
    SHI Liwen, WANG Bingchun, HONG Haoqun, ZHOU Yiru, LI Yunyong
    Advances in New and Renewable Energy. 2026, 14(1): 43-50. https://doi.org/10.3969/j.issn.2095-560X.2026.01.006
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    Antimony (Sb), as a potential anode material for potassium-ion batteries, possesses a high theoretical specific capacity and abundant reserves. However, during the potassium insertion and extraction processes, Sb tends to form an amorphous phase accompanied by significant volumetric changes, which limits its performance in stable and efficient potassium storage applications. In this study, nanosheet-structured two-dimensional Sb (2D Sb) were successfully synthesized using a one-step substitution reaction. Electrochemical performance tests demonstrate that, compared to commercial bulk Sb (Bulk Sb), 2D Sb exhibits superior potassium storage performance. At a current density of 0.2 A/g, the 2D Sb electrode delivers a high specific capacity of 680.4 mA·h/g, with a capacity retention of 74.7% after 200 cycles. Even at a high rate of 2 A/g, 2D Sb still provides a specific capacity of 345.6 mA·h/g. The results indicate that the two-dimensional structural design significantly enhances the potassium storage performance of Sb anode, providing a valuable reference for addressing the volume expansion issues of Sb-based alloy anode materials during cycling. 
  • Performance of Methane-Deposited Hard Carbon as an Anode Material for Sodium-Ion Batteries
    ZHANG Haihan, LIN Siyuan, CHE Lingjuan, SUN Wei, TANG Wei
    Advances in New and Renewable Energy. 2026, 14(1): 51-59. https://doi.org/10.3969/j.issn.2095-560X.2026.01.007
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    To address the inherent defects of hard carbon anodes, which result in low initial Coulombic efficiency and poor intrinsic electronic conductivity, a carbon nanotube coating layer was in situ grown on the hard carbon surface via methane pyrolysis using the chemical vapor deposition (CVD) method. By regulating the methane pyrolysis amount, the proportion of graphitic-like phases and disordered microcrystals in the internal structure was adjusted, thereby constructing an interwoven network of rapid electron conduction pathways and active sodium storage sites. Electrochemical performance tests demonstrated that this structural advantage ensured the continuous, rapid, and stable transport of Na+. The initial Coulombic efficiency of the 10-CH4-HC anode was improved to 68%, with a capacity retention of 80% in rate capability tests from 0.1 C to 4 C. Furthermore, after 500 cycles at a high current density of 1.2 A/g, the capacity retention remained at 95.2%, indicating excellent electrochemical stability. This structural design strategy provides valuable insights for the development of high-performance sodium-ion battery anodes.
  • Parameters Optimization of U-Shaped Well Supercritical Power Generation System Driven by Hot Dry Rock
    LI Huashan, SUN Bin, QI Zihang, GONG Yulie, TIAN Xiaoming
    Advances in New and Renewable Energy. 2026, 14(1): 60-69. https://doi.org/10.3969/j.issn.2095-560X.2026.01.008
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    The integration of U-shaped well geothermal systems with supercritical power generation technology represents a significant approach for the development of hot dry rock geothermal resources. Investigating and optimizing the design parameters that influence the performance of U-shaped well supercritical power generation systems driven by hot dry rock is a key focus in current research. Based on the Taguchi method, the L27(35) orthogonal array is designed, and the effects of different parameters on system efficiency (ηsys) and levelized cost of energy (φLCOE) are obtained using signal-to-noise ratio and analysis of variance. Moreover, the two performance indexes are combined into a single objective optimization based on the grey relational analysis to obtain the best comprehensive performance. As a result of the optimization process, it is found that system efficiency and the levelized cost of energy are largely dependent on the depth of the vertical well. Furthermore, the maximum ηsys is calculated as 16.629% under optimum operating conditions A1B3C3D3E1, and the minimum φLCOE is calculated as 1.693 yuan/(kW·h) under optimum operating conditions A3B3C1D2E3. From the grey relational analysis, the best operating conditions are determined as A2B3C1D3E1, under which ηsys and φLCOE are found to be 14.22% and 1.741 yuan/(kW·h), respectively.
  • Aerodynamic Performance of a Vertical Axis Wind Turbine with Semi-Open Blades Based on Numerical Simulation
    SONG Lei, WANG Ji, YANG Zongxiao, SU Jianxin
    Advances in New and Renewable Energy. 2026, 14(1): 70-78. https://doi.org/10.3969/j.issn.2095-560X.2026.01.009
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    The traditional H-type wind turbine exhibits high wind energy utilization and superior output performance. However, it faces difficulties in self-starting under low wind speed conditions, resulting in poor self-starting performance. To improve its overall aerodynamic performance, the vane vertical axis wind turbine with semi-open blades is studied. The structure and parameters of the wind turbine with semi-open blades were obtained through the variation of the standard airfoil blade structure. The static and dynamic performance of the wind turbine was studied based on CFD numerical simulation, and compared with the standard wind turbine. The results show that the average static torque coefficient of the wind turbine with semi-open blades is higher than that of the traditional wind turbine, demonstrating improved starting performance. Its maximum power coefficient is 0.345, reflecting favorable power output characteristics. The research shows that the wind turbine with semi-open blades has good comprehensive performance in low wind speed start-up and high efficiency output of wind energy.
  • Vortex-Induced Vibration and Vibration Abatement of the Wind Turbine Tower
    WANG Yazhou, ZHANG Yan, XU Zhiliang, REN Lei, LI Jiaqi, XU Bofeng
    Advances in New and Renewable Energy. 2026, 14(1): 79-87. https://doi.org/10.3969/j.issn.2095-560X.2026.01.010
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    The vortex-induced vibration may cause fatigue damage to the wind turbine tower and even lead to the collapse of the unit. In this paper, based on the modal spectrum method, a 5.0 MW wind turbine is taken as an example to simulate and analyze the vortex-induced vibration under three working conditions: single tower, tower and nacelle, and complete machine (tower, nacelle, impeller). The influence of structural damping ratio and turbulence intensity on vortex-induced vibration is analyzed. The results show that when the structural damping ratio is 0.002 5, the velocity of the first-order vortex-induced vibration is small (4 m/s), and the maximum amplitude is 4.7 m at 14 m/s, while the first and second order maximum amplitudes of the tower and nacelle condition and the complete machine condition are all less than 0.2 m. Then, a vortex-induced vibration abatement method is proposed for the complete machine condition. The blade's angle of attack can be increased to avoid the aerodynamic negative damping phenomenon effectively. The blade load is reduced by more than 40%, and the maximum nacelle vibration acceleration is reduced to 75.7%. In general, the vibration abatement effect is significant.
  • Research Progress of Thermochemical Catalysis for the Preparation of FDCA via Continuous Oxidation of HMF
    WANG Chao, WU Kaifan, WANG Zhongming, ZHUANG Xinshu, LIU Xiaochun, FENG Ying, LI Lianhua, MIAO Changlin, LUO Wen
    Advances in New and Renewable Energy. 2026, 14(1): 88-98. https://doi.org/10.3969/j.issn.2095-560X.2026.01.011
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    2,5-Furandicarboxylic acid can be widely used in various fields, including polyesters, plasticizers, pharmaceuticals, fragrances, and pesticides. It can also be used to produce degradable plastics, semi-aromatic nylon, unsaturated resin and other short-term modifiers for petroleum-based polymers, demonstrating significant market potential. 5-Hydroxymethylfurfural (HMF), a renewable biomass-derived compound, can be used to produce 2,5-furandicarboxylic acid (FDCA). In this paper, the reaction path of thermal catalytic oxidation of HMF is briefly summarized, and the research progress of HMF catalytic reaction systems is comprehensively summarized. The methods and challenges of improving catalyst activity are analyzed. Finally, the future direction of catalyst modification is explored. It provides theoretical guidance and reference significance for the study of continuous oxidation of HMF to prepare FDCA, thereby promoting the application of biomass derivatives.
  • Hydrogen Production Characteristics of Microbial Electrolysis Cell for Degradation of Organic Matter
    GAO Lu, GUO Ying, MO Binlin, ZHUANG Xinshu, WANG Zongyong, KONG Xiaoying
    Advances in New and Renewable Energy. 2026, 14(1): 99-105. https://doi.org/10.3969/j.issn.2095-560X.2026.01.012
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    The inherent metabolic limitations of hydrogen-producing microorganisms hinder the scalability of biohydrogen production via anaerobic fermentation. This study investigates the hydrogen production characteristics of microbial electrolysis cell (MEC) under different pH conditions, focusing on their capacity for rapid organic matter degradation and enhanced hydrogen yield. Under acidic conditions, no hydrogen was produced, and low organic matter degradation rates were observed. In contrast, alkaline conditions significantly enhance hydrogen generation efficiency and organic degradation performance. Optimal performance was achieved at pH 8.5, with peak hydrogen production and chemical oxygen demand (COD) removal efficiency. Specifically, a maximum current density of 3.96 A/m3 was reached, with a hydrogen concentration of 89.10% and a production rate of 2.59 mL/g. Remarkable removal efficiencies of 97% for simulated wastewater COD and 100% for sodium acetate were achieved within 72 hours, with an energy conversion efficiency of 88.90%. Microbial community analysis revealed that Pseudomonadota (electroactive bacteria) and Bacteroidota (organic-degrading bacteria) were the dominant phyla at an optimal pH of 8.5.
  • Research Progress on the Efficient Resource Recovery of Retired Crystalline Silicon Photovoltaic Modules
    LI Cheng, LI Wentao, LIU Yu, DONG Feifei, LI Dongxia, HUI Xing
    Advances in New and Renewable Energy. 2026, 14(1): 106-112. https://doi.org/10.3969/j.issn.2095-560X.2026.01.013
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    With the approaching large-scale retirement of photovoltaic (PV) modules globally, efficient resource recovery has become a key challenge for the sustainable development of the PV industry. This paper systematically reviews progress in recycling technologies for retired crystalline silicon PV modules, focusing on the advantages and limitations of physical-mechanical methods, chemical solvent methods, and pyrolysis method in terms of material separation efficiency, energy consumption, and pollution control. The study finds that while physical-mechanical methods are simple in process, they are prone to cross-contamination of materials. Chemical solvent methods face environmental pressures due to the use of highly corrosive reagents and the treatment of organic waste liquids. Pyrolysis method, although capable of recovering high-purity materials, suffers from high energy consumption and the emission of polluting gases such as hydrogen fluoride. Moreover, the stripping technology of the encapsulation material, EVA film, remains a core bottleneck in the recycling process. Future efforts should focus on reducing energy consumption and pollution and increasing the recovery rate of high-value materials such as silicon and silver through the optimization of multiple technologies (e.g., low-temperature pyrolysis, bio-based solvent substitution, and intelligent sorting equipment). Policy guidance and the establishment of standardized processes will promote the construction of a closed-loop system for PV modules, from "green installation to efficient recycling and resource reuse", unleashing the potential of a trillion-level circular economy and providing key support for the global carbon neutrality goal.
  • Research Progress on Ice Slurry Pigging Techniques for Urban Water Supply Pipelines
    CHEN Yongzhen, QIN Kun, SONG Wenji, FENG Ziping, YI Juan, YAN Xin, XIAO Rui
    Advances in New and Renewable Energy. 2026, 14(1): 113-120. https://doi.org/10.3969/j.issn.2095-560X.2026.01.014
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    The ice slurry cleaning technology developed in recent years has been applied in urban water supply pipelines, with advantages such as water conservation, reduced time consumption, no pollution, and no excavation. This paper introduces the necessity of pipeline cleaning, the characteristics of existing pipeline cleaning technologies, and focuses on the characteristics and application progress of ice slurry pigging technology, including ice slurry preparation, storage, and pumping technologies, and conducts research and analysis of the application progress of ice slurry pigging technology. The results indicate that the supercooling and scraping method are the most likely ice slurry preparation technologies for field application in pipe cleaning. Ice slurry storage can cause ice crystal particles to grow larger, affecting parameters such as pressure drop and heat transfer characteristics. Moreover, the storage process requires the design of a stirring device to ensure the uniformity and fluidity of the ice slurry. To achieve a good cleaning effect, it is necessary to regulate the pumping condition parameters to obtain an effective cleaning plunger throughout the entire pipeline. Case analysis shows that the sediment washed out mainly consists of soil, sand and iron slag from urban water supply pipelines. Factors such as ice fraction, ice pig length, water flow velocity and water temperature have significant affect the effectiveness of ice slurry cleaning. The optimal cleaning strategy is the ice volume fraction of the ice slurry used for pigging is 60%-70% and the volume of ice slurry pumped is 10%-30% of the pipe. The research results will provide reference for the development of ice slurry pigging equipment, optimization of pigging performance, and evaluation of pigging effects.
  • Numerical Simulation and Analysis of Erosion Wear of Spiral Elliptical Twisted Tube
    YIN Shuangzhi, YE Zhou, ZHU Dongsheng
    Advances in New and Renewable Energy. 2026, 14(1): 121-126. https://doi.org/10.3969/j.issn.2095-560X.2026.01.015
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    In order to investigate the impact of soot particles on the erosion wear of spiral elliptical twisted tubes and reduce the risk of heat exchanger damage and tube burst, this paper takes the heat exchanger tube bundle of a 5 MW hot test rig in a boiler plant as the research object, and carries out numerical simulation on its erosion and wear by soot particles during operation. The SST k-ω model and the computational fluid dynamics-discrete phase model (CFD-DPM) were used to simulate soot particle motion, and the effects of smoke velocity, soot particle size, and soot mass flow on the surface wear of the twisted tube were analyzed. The results show that impact wear occurs mainly on the round straight pipe section at the entrance of the twisted pipe, and cutting wear occurs mainly on the middle twisted pipe section. The average erosion rate on the surface of the twisted pipe increases with the increase of flue gas flow rate and soot particle mass flow rate, and decreases with the increase of soot particle size. The numerical simulation results deepen understanding of the wear laws of twisted tube heat exchangers, and provide a reference for the research on the erosion wear of boiler heating surfaces and the development of protective measures.
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