Article
Energy & Fuels
Shouxi Jiang, Laihong Shen, Jingchun Yan, Xin Niu, Bin Hu, Lingchang Wang
Summary: This study investigated the effects of sodium on coal combustion and NOx emissions in Zhundong coal. The results showed that water-soluble sodium had negative effects on coal conversion and NO generation during traditional combustion. However, when chemical looping was applied to Zhundong coal combustion, the NO emission was largely restrained and mainly came from pyrolysis. Additionally, the gasification agent facilitated NO generation and CO2 had a stronger effect on chemical looping.
Article
Thermodynamics
Junjie Lin, Kun Luo, Shuai Wang, Liyan Sun, Jianren Fan
Summary: The hydrodynamic and thermochemical characteristics in the coal-direct chemical looping combustion (CLC) process were studied using a self-developed computational fluid dynamics - discrete element method (CFD-DEM) approach. The results showed that increasing the coal feeding rate improved the combustion efficiency, while finer oxygen carriers promoted the conversion of gas products. In addition, a dual-side coal feeding arrangement significantly improved the system's uniformity.
Article
Engineering, Environmental
Jinchen Ma, Daofeng Mei, Chaoquan Wang, Xin Tian, Zhaohui Liu, Haibo Zhao
Summary: This study investigated the fate of sulfur during in-situ gasification chemical looping combustion of coal, highlighting the resistance of Fe2O3/Al2O3 to sulfur and the positive effects of temperature and oxygen/fuel ratio on the conversion of sulfur compounds. Additionally, the research demonstrated the desulfurization function of coal ash and the effective conversion of sulfur-containing gases into SO2 using oxygen carrier materials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Hayder A. Alalwan, Alaa H. Alminshid
Summary: This report discusses recent advancements in CO2 capturing methods, with a focus on chemical looping combustion (CLC) as a promising technology. CLC is highlighted for its ability to reduce the cost of CO2 separation and concentrate the captured CO2, making it a feasible option for carbon capture.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Zhen Fan, Neng Huang, Kunlei Liu
Summary: Chemical looping combustion (CLC) is a fuel combustion technology that has less energy penalty for CO2 removal. This study systematically analyzes the feasibility of autothermal operation in CLC and discusses the selection of oxygen carrier, capacity and impact of support materials, circulation rate, heat-up feeds, aeration gas, reaction kinetics, and CLC operation, aiming to provide insights and approaches for the development of oxygen carriers.
CURRENT OPINION IN CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Ming Luo, Yanjun Qin, Jianjun Cai, Lili Qian, Shuxiang Wang, Haiyan Zhang, Lunzheng Zhou, Peng Liu
Summary: This study investigated the release and migration characteristics of sulfur in the chemical looping combustion of coal with two different synthetic oxygen carriers. The results showed that sulfur behavior varied under different conditions, with sulfur mainly migrating to metal sulfides at lower temperatures and peroxide coefficients.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Energy & Fuels
Ying Li, Yanan Wang, Kunlei Liu, Haibo Zhao
Summary: This study explores the advantages of Cu/Fe-based composite oxygen carriers in terms of cyclic reactivity and kinetic parameters, providing guidance and optimization methods for the design of low-cost oxygen carriers.
Article
Chemistry, Applied
Shiwen Fang, Shuchang Yan, Qijie Lu, Chengyang Li, Haitao Wang, Yan Lin, Zhen Huang, Hongyu Huang
Summary: The lignite chemical looping combustion and hematite as an oxygen carrier were studied in this paper. By analyzing the thermodynamic behavior and conducting experiments, it was found that increasing the oxygen carrier to lignite mass ratio could reduce the release of NH3 and HCN. The release of HCN increased with temperature, while NH3 release decreased. Increasing the gas flow rate resulted in higher NH3 and HCN emissions. Modifying the oxygen carrier with Ni and Cu improved oxidation performance and significantly reduced NH3 and HCN emissions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Thermodynamics
Haodong Huang, Jinchen Ma, Haibo Zhao, Chuguang Zheng
Summary: This work investigates the behavior of coal-derived chlorine in chemical looping combustion (CLC) and the potential adverse impacts of primary gaseous chlorine (HCl) on a Cu-based oxygen carrier (OC). The inactivation mechanism of the sol-gel-derived CuO/Al2O3 OC is studied. It is found that HCl is the main gaseous chlorine in coal CLC and shows high reactivity towards CuO. The presence of HCl can result in corrosion and degradation of the OC.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Energy & Fuels
Jingchong Yan, Hanren Jiao, Xiaogang Chu, Zhiping Lei, Shigang Kang, Zhanku Li, Zhicai Wang, Shibiao Ren, Hengfu Shui
Summary: Coal fuelled-chemical looping combustion (CF-CLC) is a promising technology for CO2 mitigation, and the Carajas hematite modified with CuO showed superior performance compared to K2CO3, indicating that CuO-decorated hematite is a suitable and promising oxygen carrier for CF-CLC.
Review
Energy & Fuels
Dunyu Liu, Chaoran Wang, Yunpei Fan, Qiuqi Liu, Xudong Wang, Kailong Xu, Jing Jin, Jingjing Ma, Jinchen Ma
Summary: Chemical looping combustion (CLC) of coal for carbon capture utilization and storage is an effective technology to reduce carbon emission. However, there is uncertainty in mercury emission from both air and fuel reactor. This paper aims to reveal the mechanisms for the transformation of mercury-related species.
Article
Energy & Fuels
Rihong Xiao, Yi Wang, Yili Zhang, Zhuo Xiong, Junying Zhang, Yongchun Zhao
Summary: In this study, experiments were conducted to investigate the sodium release and particle matter (PM) formation mechanisms in Zhundong coal, and it was found that kaolinite additives had a positive effect on sodium release and PM formation.
Article
Energy & Fuels
Yawei Song, Yifeng Chen, Sheng Su, Hao Tang, Hengda Han, Jun Xu, Long Jiang, Mengxia Qing, Yi Wang, Song Hu, Jun Xiang
Summary: The combustion characteristics of acid-washed and inorganic sodium impregnated coals were studied under different heating rates, and it was found that inorganic sodium inhibits coal combustion in the early stage, but promotes it in the later stage.
Review
Environmental Sciences
Z. T. Yaqub, B. O. Oboirien, H. Leion
Summary: Chemical Looping Combustion (CLC) has been found to be a better alternative for converting Municipal Solid Waste (MSW) to energy and reducing the generation of dioxins. This study comprehensively reviews the experimental studies, oxygen carriers, reactor types, and performance evaluation of CLC of MSW. Plastic waste has received the most attention under CLC conditions due to its potential to reduce the emission of dioxins and furans. Alkaline earth metals modified iron ore has shown to be the most effective oxygen carrier, while the fluidized bed reactor is the preferred configuration for CLC of MSW.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Haifeng Zhang, Laihong Shen, Huijun Ge, Hongcun Bai
Summary: Combining chemical looping combustion with biomass densification technology can effectively address the issue of cyanobacteria bloom and recover nitrogen and phosphorus resources efficiently. Controlling the moisture content and using hematite oxygen carrier during the briquette preparation process can enhance the mechanical strength and energy density of the briquettes.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Paper & Wood
Guohui Song, Haiqing Qiao, Haiming Gu, Xiaobo Cui
Summary: This study proposes and compares the industrial-scale application of electrical heating gasification (EHG) technology and water electrolysis-assisted gasification (WEG) to store and utilize renewable electricity. Results show that EHG consumes less electricity and produces syngas with higher chemical exergy, making it more efficient than WEG.
Article
Thermodynamics
Miaomiao Niu, Rongyue Sun, Kuan Ding, Haiming Gu, Xiaobo Cui, Liang Wang, Jichu Hu
Summary: This work aims to understand the co-pyrolysis synergy between different biomass and waste tire for high value utilization. Thermal behavior, product yields and characteristics were analyzed to study the influence of biomass species and blending ratios on co-pyrolysis synergistic effect. The results showed positive synergistic effects on char and liquid production, with weakened synergy in liquid production when waste tire was blended. Co-pyrolysis also had positive synergistic effects on CO and CO2 generation, but negative synergistic effects on H2 and CH4 content.
Article
Energy & Fuels
Shouxi Jiang, Laihong Shen, Jingchun Yan, Xin Niu, Bin Hu, Lingchang Wang
Summary: This study investigated the effects of sodium on coal combustion and NOx emissions in Zhundong coal. The results showed that water-soluble sodium had negative effects on coal conversion and NO generation during traditional combustion. However, when chemical looping was applied to Zhundong coal combustion, the NO emission was largely restrained and mainly came from pyrolysis. Additionally, the gasification agent facilitated NO generation and CO2 had a stronger effect on chemical looping.
Article
Chemistry, Physical
Shiwei Ma, Fang Cheng, Ping Lu, Tao Song
Summary: Modified hematite with CeO2 loading improves the redox reactivity and cyclic stability in chemical looping hydrogen generation. Hematite with 20% CeO2 loading exhibits the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Mathematical & Computational Biology
Yan Zhang, Zhiwen Jiang, Cheng Chen, Qinqin Wei, Haiming Gu, Bin Yu
Summary: Accurate prediction of drug-target interactions is a key challenge in drug science, and the proposed method DeepStack-DTIs achieves higher accuracy compared to existing methods by extracting various features and utilizing a stacked ensemble classifier. The method shows excellent predictive ability on different datasets, providing new insights for drug-target interaction prediction.
INTERDISCIPLINARY SCIENCES-COMPUTATIONAL LIFE SCIENCES
(2022)
Article
Chemistry, Physical
Haiming Gu, Yunfei Gao, Sherafghan Iftikhar, Fanxing Li
Summary: The study demonstrates the potential application of Ni decorated and CeOx-stabilized SrO (SrCe0.5Ni0.5) as a catalytic sorbent material for carbon dioxide capture from flue gas and dry reforming of CH4, showing excellent activity and stability. This intensified process with zero coke deposition has the flexibility to produce concentrated CO via CO2-splitting while co-producing a syngas with tunable H2/CO ratios.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Haiming Gu, Juan Yang, Guohui Song, Xiaobo Cui, Miaomiao Niu, Shanhui Zhao
Summary: Chemical looping biomass gasification is a novel technology that converts biomass into syngas. In this study, LaFe1-xNix was investigated as a catalytic oxygen carrier for the conversion of toluene into syngas. The results showed that LaFe and LaNi exhibited better performance in promoting syngas production compared to other oxygen carriers. The addition of steam and the increase in steam/carbon ratio were found to promote toluene steam reforming and carbon gasification, leading to higher C-1 and H-2 yields. LaFe0.6Ni0.4 demonstrated a strong reactivity stability during toluene conversion.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Yue Guo, Shangyi Yin, Ping Lu, Tao Song
Summary: A new design of a staged fuel reactor is proposed to reduce the pressure drop during chemical looping applications. The design integrates a bubbling bed and a spouted fluidized bed. Cold experimental setup is established to gain insights into the gas-solid fluid dynamics of the new design. The results show different flow types and corresponding transition boundaries, providing a way to lower the overall pressure drop and reduce the fan energy consumption.
Article
Agricultural Engineering
Lu Chen, Huijun Ge, Ping Li, Changdong Sheng, Tao Song
Summary: Biomass fueled-Chemical Looping Combustion (CLC) provides a pathway for negative CO2 emission. However, the interaction behavior between organic potassium (K) and an oxygen carrier in CLC is not well understood. This study investigated the interaction between organic K and Fe2O3/Al2O3 oxygen carrier and found that the introduction of steam can suppress agglomeration.
BIOMASS & BIOENERGY
(2022)
Article
Engineering, Environmental
Haiming Gu, Guohui Song, Miaomiao Niu, Shanhui Zhao, Yunfei Gao, Fanxing Li
Summary: In this study, high temperature sorbent SrO was prepared with sol-gel method and the effect of different support materials on the reactivity stability was evaluated. It was found that CeO2 supported sorbent exhibited super stable CO2 capture performance, enabling carbonation/calcination at a lower temperature and improving microstructure and sintering resistance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Shanhui Zhao, Wanjun Xu, Haiming Gu, Xiaolong Bi, Linghai Chen, Yunliang Zhang
Summary: This study investigated the interaction mechanisms between specific sites on char surface and tar compounds at the molecular level using density functional theory and experiments. The results show that heterogeneous adsorption can effectively enhance the decomposition of benzene and reduce the decomposition temperature, while potassium has a negative effect on tar cracking.
Article
Computer Science, Interdisciplinary Applications
Wankun Chen, Weifeng Zhou, Ling Zhu, Yuan Cao, Haiming Gu, Bin Yu
Summary: A novel 3D multithreading dilated convolutional network (MTDC-Net) was proposed for automatic brain tumor segmentation. By introducing multi-threading dilated convolution strategy, pyramid matrix fusion algorithm, spatial pyramid convolution operation, and multi-threading adaptive pooling up-sampling strategy, the model achieved high dice scores on public validation datasets.
JOURNAL OF BIOMEDICAL INFORMATICS
(2022)
Article
Green & Sustainable Science & Technology
Shouxi Jiang, Yongping Huang
Summary: To overcome the low energy efficiency of phase-change thermal storage technologies, this study proposes a novel leaf-like fin and a bioinspired latent heat exchanger (LHE) using phase change materials (PCMs). The results demonstrate that the innovative leaf-like fin significantly enhances the discharge performance, reducing the complete solidification time by 41.6% and increasing the average discharge power by 69.9% compared to conventional LHEs. Moreover, optimal material selections and operating conditions are recommended to further improve the heat discharge performance of PCMs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Tao Song, Jianzheng Xu
Summary: Chemical Looping Combustion (CLC) is a cost-effective method for CO2 negative emission from biomass. Experimental and modeling results show that using low-cost red mud as an oxygen carrier can reduce the inhibitory effect of H2 on carbon reaction, thereby significantly enhancing char conversion.
COMBUSTION AND FLAME
(2023)
Article
Energy & Fuels
Yu Yang, Yali Shao, Shiwei Ma, Ping Li, Tao Song
Summary: Oxygen Carrier Aided Combustion (OCAC) is a process that improves combustion efficiency by using oxygen carrier particles. This study found that red mud is a potential low-cost oxygen carrier and investigated the interaction mechanism between organic and inorganic potassium and red mud oxygen carriers, as well as their effect on particle agglomeration.
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
