Article
Engineering, Environmental
Chenglong Hou, Dharam Raj Kumar, Yu Jin, Yusong Wu, Jason J. Lee, Christopher W. Jones, Tao Wang
Summary: A new design approach for QA-based polymeric sorbents was proposed to enhance CO2 capture efficiency through porosity control and hydrophilicity modulation. Experimental results showed that optimized structure can make the sorbents adaptive to varied and complex atmospheric circumstances.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Chen Zhang, Xinqi Zhang, Tingyu Su, Yiheng Zhang, Liwei Wang, Xuancan Zhu
Summary: This review comprehensively assesses five different modification schemes, including acid/alkali/salt treatment, inert supports, functional groups, nanomaterials, and multi-phase sorbents, to provide insights into the mechanisms, performances, and commercial analysis for trace CO2 capture. The features of different schemes are compared and tabulated to guide sorption performance enhancement. Commercial assessments for TCC materials are conducted using a multivariable model, and future development of sorption performance enhancement schemes for low-concentration capture of CO2 is proposed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Environmental
Hua Pang, Anwei Sun, Haoran Xu, Gang Xiao
Summary: Research on the adsorption of MgO-Na2CO3 materials shows that the characteristics of CO2 adsorption of the material vary under different preparation methods and adsorption conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Esther Acha, Ion Agirre, V. Laura Barrio
Summary: Methanation using Power-to-Gas technology is gaining attention as it enables the production of green methane from CO2 and H2. In situ water sorption is proposed to improve this process, but the challenge lies in finding effective water sorbents at useful reaction temperatures. This study investigates the water sorption capacity of different materials at temperatures ranging from 25 to 400 degrees Celsius. The results show that modified lanthana-Ba and dolomite sorbents exhibit promising water sorption values, outperforming zeolite sorbents under the same operating conditions.
Article
Chemistry, Applied
Shuzhen Chen, Changlei Qin, Weiyang Yuan, Dawid P. Hanak, Jingyu Ran
Summary: This study investigates the regeneration process of the high-temperature CO2 adsorbent Li4SiO4 and introduces the dependence of the regeneration rate on CO2 pressure for the first time. The findings show a correlation between the reaction order and the difference between equilibrium pressure and CO2 pressure, as well as provide apparent activation energy values for Li4SiO4 and KLi4SiO4 regeneration. The proposed power law model with m = 4/3 is suggested to be the most probable mechanism function for Li4SiO4-based sorbents regeneration.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hua Pang, Haoran Xu, Anwei Sun, Gang Xiao
Summary: In this study, MgO-Na2CO3-KNO3 sorbents with fast sorption kinetics, high capture capacity, and good cyclic stability at elevated conditions were reported. The results showed that KNO3 is the nitrate species with the highest MgO conversion, and Na2CO3 plays a key role in the initial fast sorption rate. The sorbent with 60 mol% Na2CO3 doping amount achieved the highest MgO conversion.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Hua Pang, Feng Mao, Shishun Zhang, Peng Sun, Anwei Sun, Gang Xiao
Summary: This study investigates the use of eutectic carbonates as promoters for MgO-based sorbents operating at elevated temperature and pressure. The results show that MgO doped with eutectic ternary LiNaK carbonate exhibits the highest MgO conversion and CO2 capture capacity. The incorporation of alkali metal ions lowers the energy barrier for oxygen ion migration. This research provides guidance for the design of high-performance CO2 sorbents at wider application conditions.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Shiyi Ni, Nana Wang, Xin Guo, Junbo Liu
Summary: In this study, expanded perlite (EP) was used as a silicon source to synthesize Li4SiO4 sorbent. It was found that metal impurities in EP can improve the sorption performance of the sorbent, and adding agar or using organic lithium source can enhance the sorption capacity of the pellets.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Hewen Li, Jian Sun, Qiran Jiang, Hongqiang Xia, Shan Cheng, Zijian Zhou, Xinming Nie, Chuanwen Zhao
Summary: Highly efficient and stable Zr-incorporated CaO-based sorbents were synthesized using a cigarette butt-assisted combustion synthesis (CAC) method. The CAC method showed superior cyclic CO2 capture capability and shorter synthesis time compared to wet-mixing and sol-gel methods. The optimal combustion temperature for synthesizing Zr-incorporated CaO-based sorbents using CAC method was found to be 750 degrees C. Synthetic sorbents with 25 wt% ZrO2 exhibited outstanding CO2 capture performance due to the generation of extensive CaZrO3 grains. The combination of cigarette butt-assisted combustion and graphite-moulding enabled the preparation of practical Zr-incorporated CaO-based pellets.
Article
Engineering, Environmental
Javier Fermoso, Aimaro Sanna
Summary: Dry sorbent high temperature CO2 capture process is an effective technology for CO2 removal. The study found that adding Li2CO3 and Na2CO3 as promoters to fly ash derived potassium-aluminium silicates sorbents enhanced CO2 capture efficiency, with K-FAs_20%Na showing the best performance. The SEM-EXD analyses indicate that the formation of K/Na eutectic melt on the sorbent surface facilitates CO2 and K diffusion and protects from strong sintering, while detailed kinetics analysis revealed a double exponential kinetics for CO2 adsorption on K-FAs sorbents.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Shishir Tiwary, Soubhik Kumar Bhaumik
Summary: This review discusses theoretical approaches in high-temperature CO2 capture using CaO-based sorbent, including thermodynamics, sorbent-level kinetic models, and column-level hydrodynamic models. The theoretical prediction of plant-level performance is crucial for design upscale.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Marcello Costamagna, Eleonora Micheli, Valentino Canale, Michele Ciulla, Gabriella Siani, Pietro di Profio, Matteo Tiecco, Gianluca Ciancaleoni
Summary: A low-cost Transition Temperature Mixture (TTM) with high CO2 absorption and desorption efficiency has been synthesized by mixing ethylene glycol and potassium hydroxide, with the addition of boric acid and a small amount of water for performance optimization. The optimized four-component mixture shows promising results for rapid CO2 absorption and quantitative desorption, allowing for multiple cycling of absorption/desorption.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Shuzhen Chen, Jinze Dai, Changlei Qin, Weiyang Yuan, Vasilije Manovic
Summary: Research indicates that the equilibrium temperature for CO2 adsorption/desorption of Li4SiO4-based sorbents at high temperatures is higher than theoretical values, with silicon precursors and Ce/Fe dopants having minimal effects on equilibrium. Sorbents with K/Na exhibit significant drops in equilibrium temperature at 0.5 atm of CO2, and higher K doping results in lower turnover temperatures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
M. Salome Macedo, M. A. Soria, Luis M. Madeira
Summary: Hydrotalcites were prepared by co-precipitation with different Mg/Al molar ratios and synthesis pH, and the derived mixed oxides were used for CO2 sorption at high temperature. Samples with a synthesis pH of 8.5 and an optimum Mg/Al molar ratio between 4 and 10 showed outstanding CO2 sorption capacities. Repeated sorption-desorption cycles for 8.5HT7 HDMO under wet conditions significantly improved its working capacity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Margarita Rekhtina, Maximilian Krodel, Yi-Hsuan Wu, Agnieszka Kierzkowska, Felix Donat, Paula M. Abdala, Christoph R. Muller
Summary: The structural dynamics of a NaNO3-promoted, MgO-based CO2 sorbent were investigated using in situ time-resolved powder x-ray diffraction. The sorbent initially deactivates due to an increase in MgO crystallite size, reducing the availability of nucleation points for MgCO3 growth. However, after the third cycle, the sorbent shows continuous reactivation, attributed to the in situ formation of Na2Mg(CO3)2 crystallites that act as seeds for MgCO3 nucleation and growth.
Article
Energy & Fuels
Xueyu Chang, Yuxing Li, Jianlu Zhu, Xuehui Zhang, Wen Li, Chao Wang, Haisheng Chen, Jie Chen, Weiping Zeng
Summary: This study analyzes the effects of three different sloshing forms on the liquefaction performance and equipment of DMR system through sloshing experiments. The results show that sloshing reduces liquefaction performance, increases power consumption, and has adverse effects on fluid distribution and heat transfer in the heat exchanger.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Nuclear Science & Technology
Dong Yang, Lin Chen, Yongchang Feng, Haisheng Chen
Summary: This paper investigates the heat transfer mechanism of supercritical water during the transition process from subcritical to supercritical states. The results reveal that the difference in thermophysical properties between the boundary layer and the core region is the main reason for the heat transfer behavior, and the flow structure on the buffer layer is a dominating factor for heat transfer deterioration.
NUCLEAR SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Lujing Huang, Huan Guo, Yujie Xu, Xuezhi Zhou, Haisheng Chen
Summary: Compressed air energy storage (CAES) systems often operate under off-design conditions, which significantly affect system performance. This study developed an off-design model for a thermal storage CAES system under multiple design points and investigated the effects of off-design operation and design point selection on system performance. The results reveal the relationships between various parameters and system energy storage efficiency.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Haibo Zhao, Xiao Yang, Chunyang Wang, Rui Lu, Ting Zhang, Haisheng Chen, Xinghua Zheng
Summary: Thermal rectification is an important energy management method with potential applications in micro/nano scale heat dissipation, thermoelectric performance improvement, and thermal switches. Simulation and experimental studies are used to explore the mechanisms and principles of thermal rectification, providing theoretical guidance for its development. However, there is limited experimental research on thermal rectification at micro/nano scale, mainly focusing on asymmetric structures, which hinders further device development.
MATERIALS TODAY PHYSICS
(2023)
Article
Energy & Fuels
Pengfei Li, Zhitao Zuo, Xin Zhou, Jingxin Li, Haisheng Chen
Summary: This study investigates the characteristics of an axial compressor at different rotational speeds. It is found that adjusting the rotational speed can expand the working range of the compressor. Through numerical simulations, the reasonable distribution of inlet parameters and the influence of rotational speed changes on internal flow are determined. The research results provide guidance for the stable and efficient operation of axial compressors in compressed air energy storage systems.
Article
Energy & Fuels
Jixiang Chen, Zhitao Zuo, Xin Zhou, Jianting Sun, Jingxin Li, Wenbin Guo, Haisheng Chen
Summary: The oblique flow compressor is an important component in the compressed air energy storage (CAES) system, and the design of the radial inlet chamber (RIC) directly affects its performance. The study investigates the influence of splitter blades on RIC performance by designing 4 RICs with different numbers of splitter blades. The results show that increasing the number of splitter blades improves stall margin and the isentropic efficiency and pressure ratio vary with different blade numbers.
Article
Energy & Fuels
Xue Mi, Chao Chen, Haoqi Fu, Gongcheng Li, Yongxiang Jiao, Fengtao Han
Summary: This research proposed a phase change material (PCM) heat storage wall system with a four-layer structure, and studied the mechanism of electric thermal conversion of the graphene electrothermal film and the heat transfer characteristics of the four-layer structure. The experimental results showed that with the increase in voltage, the temperature of the electrothermal film increases, while its electrothermal conversion efficiency decreases from 85% to 75%; during the heat storage process, the temperature of the PCM wallboard is 3-5 degrees C lower than that of the cement wallboard, but the effective heat storage increases by 59-65%; during the heat release process, the effective heat release of the PCM wallboard increases by 41-78%, and the maximum heat storage and release efficiency is 98%; and at 32 V, the PCM can completely change phase. The theoretical calorific value of the electrothermal film is equivalent to the hourly power generation of 1.45 m(2) of photovoltaic modules. These results provide basic data for the integration of photovoltaic and phase change technology and their efficient application in buildings.
Article
Thermodynamics
Huan Guo, Yujie Xu, Lujing Huang, Jianting Sun, Haisheng Chen
Summary: This paper establishes an optimization strategy based on the corresponding-point methodology (CPM) for CAES systems and modifies the overall evaluation index, Mg. The optimization case of under-water CAES system is analyzed. Results show that the proposed optimization strategy is effective and reveal the influence mechanism of key parameters on the optimization results.
Article
Energy & Fuels
Yu Liu, Zi-Yu Liu, Hualiang Zhang, Yujie Xu, Haisheng Chen
Summary: Extensive research has been conducted on Li-ion batteries to achieve both safety and high energy density. This study successfully synthesized an anode material for lithium storage using cobalt nitrate as a precursor and dates as a carbon source. The carbon derived from dates had desirable properties and effectively maintained the stability of large-capacity Co3O4 particles. The resulting carbon-metal oxide composite electrodes exhibited satisfactory performance in terms of reversible capacity, cycling stability, Coulombic efficiency, and high-rate capability.
Article
Energy & Fuels
Ruijia Ren, Binlin Dou, Hua Zhang, Kai Wu, Yadong Wang, Haisheng Chen, Yujie Xu
Summary: In this study, a mesoporous Ni/CeO2 catalyst with high specific surface area was prepared and used for glycerol dry reforming. Thermodynamic analysis was conducted to minimize Gibbs's free energy. The characterization results showed that a higher Ni content resulted in weaker interaction between Ni and the CeO2 support. The 5Ni/CeO2 catalyst exhibited the best catalytic activity and glycerol conversion reached 84.1% at 750 degrees C. The catalysts also showed excellent stability during the 10-hour catalytic process. The activation energy of the Ni-based catalyst for glycerol dry reforming was calculated using a kinetic model assuming a power law as a first-order reaction.
Article
Thermodynamics
Chunyang Wang, Xiao Yang, Yanan Shen, Ting Zhang, Xinghua Zheng, Haisheng Chen
Summary: A three-dimensional numerical study was conducted to investigate the cooling performance of a thermoelectric module with multilayer pyramid thermoelectric legs. Two physical models, rectangular shaped and multilayer pyramid thermoelectric cooling modules, were compared. The study focused on the effect of leg height, side ratio, and the number of leg layers on the cooling performance. The results showed that the multilayer pyramid module had better cooling performance than the rectangular shaped module, with a maximum reduction of 11.25 K in the minimum averaged temperature of the cold surface. However, the cooling performance of the multilayer pyramid module was not very good when the values of side ratio and the number of leg layers were low. A recommended map for evaluating the cooling performance was presented based on the side ratio, the number of leg layers, and the heights of thermoelectric legs.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Energy & Fuels
Huan Guo, Xiaolu Wang, Lujing Huang, Hualiang Zhang, Jingjian Huang, Yujie Xu, Haisheng Chen
Summary: This paper studies a new integrated system of coal-fired CHP unit with compressed air energy storage (CAES) system, which can greatly adjust the heat-power ratio. A detailed off-design model of the integrated system is established to analyze the influence of key parameters on the system's off-design characteristics. Case study on an industry park data shows that the integrated system can well follow the heat and power demand with relatively high efficiency.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
Xinjing Zhang, Yang Li, Ziyu Gao, Shiqing Chen, Yujie Xu, Haisheng Chen
Summary: Compressed air energy storage (CAES) is an effective solution for controlling renewable energy and balancing the mismatch between renewable generation and customer load, thus promoting the penetration of renewable energy. Advanced CAES technologies, such as adiabatic CAES (ACAES), isothermal CAES (ICAES), liquid air energy storage (LAES), supercritical CAES (SC-CAES), underwater CAES (UWCAES), and CAES coupled with other power systems, have been extensively studied and developed in the past decade. This paper provides a comprehensive reference for adjusting novel CAES systems to achieve dynamic operation with high performance, facilitating the integration and planning of different types of CAES and their dynamic control strategies in energy systems for various applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Yin Guan, Wen Li, Yangli Zhu, Xing Wang, Gongrui Huang, Haisheng Chen
Summary: There is a pressure difference between the air storage device pressure and turbine inlet pressure of the compressed air energy storage (CAES) system. By using a reasonable air distribution mode, the throttling loss caused by pressure difference can be reduced. This study investigates the characteristics of axial turbine with chamber under two nozzle governing modes, including mass flow rate, specific work, and efficiency. The results show that compared with throttle governing, the optimal mode under rated mass flow rate increases the average specific work of the turbine by 6.8% and the average total efficiency by 7.0%. The flow field loss is mainly related to the decreased regulated pressure.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Yuanyuan Jing, Jun Luo, Xue Han, Jiawei Yang, Qiulin Liu, Yuanyuan Zheng, Xinyi Chen, Fuli Huang, Jiawen Chen, Qinliang Zhuang, Yanan Shen, Haisheng Chen, Huaizhou Zhao, G. Jeffrey Snyder, Guodong Li, Ting Zhang, Kun Zhang
Summary: Researchers have developed a large-area, durable, washable, and skin-conformable wearable thermoelectric textile that can rapidly and stably cool the body surface and be powered by solar energy, reducing energy consumption.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
