Article
Energy & Fuels
Jingchun Yan, Tianxu Shen, Peng Wang, Xianglei Yin, Xiao Zhu, Shouxi Jiang, Laihong Shen
Summary: An innovative fluidized bed thermogravimetric analyzer was designed to study the performance of oxygen carriers in chemical looping combustion processes, revealing that high-grade manganese ore with less silicon content is more suitable for industrial CLC pilots.
Article
Energy & Fuels
Ratnakumar V. Kappagantula, Gordon D. Ingram, Hari B. Vuthaluru
Summary: Chemical Looping Combustion technologies have the ability to capture carbon dioxide and are modeled using a specialized Fluidized Bed Reactor block in Aspen Plus. Sensitivity studies showed that solid volume fraction decreases with bed height and superficial velocity, while the height to diameter ratio of the fluidized bed is an important variable in reactor design.
Article
Thermodynamics
Junjie Lin, Liyan Sun, Kun Luo, Dali Kong, Jianren Fan
Summary: In this study, three-dimensional simulations were used to investigate the flow behavior and reaction characteristics of a chemical looping combustion system. The numerical models developed in this work can be utilized for system design and scale-up, and the operating temperature and solid inventory have significant effects on system performance.
Article
Engineering, Environmental
Jing Yang, Yujie Ren, Jinsuo Lu, Hongpan Liu, Zhiqiang Zhang, Heliang Pang, Keomounlath Bounkhong
Summary: The study investigated a new PG-CuFe2O4 oxygen carrier for reducing lignite in Chemical Looping Gasification (CLG) process, successfully capturing H2S and producing syngas with high proportions of CO and H2. Experimental results showed that PG-CuFe2O4 had excellent H2S capture ability, with Fe3O4, Cu, and FeS playing important roles in the H2S capture during the reduction process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Birgitta Narindri Rara Winayu, Chun-Ta Li, Hsin Chu
Summary: Calcined ilmenite was used as an oxygen carrier in chemical looping combustion (CLC) and achieved high conversion rates. Increasing syngas concentration, operating temperature, and superficial velocity improved the reaction rate and oxygen carrier utilization, but the application of CO and CH4 caused carbon deposition and surface blocking. High redox cycles had a negative effect on the performance of the oxygen carrier.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Doki Yamaguchi, Liangguang Tang, Jose Orellana, Trevor D. Hadley, Sankar Bhattacharya, Kok-Seng Lim
Summary: The study developed a compact fully looped chemical looping reactor and found that the CLC performance increased with increasing operation time over 36 hours, as indicated by the increase in the CO2/CO molar ratio. The morphology changes and ash interaction of the Australian ilmenite did not noticeably affect the CLC performance or operation during continuous operation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Pulkit Kumar, Ajit K. Parwani, Dileep Kumar Gupta, Vivek Vitankar
Summary: This study conducted cold flow simulation to investigate the hydrodynamic viability of the fast-fluidized bed air reactor, with hematite selected as the oxygen carrier. The results obtained a stable solution and were validated from experimental data.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Ivan Gogolev, Toni Pikkarainen, Juho Kauppinen, Carl Linderholm, Britt-Marie Steenari, Anders Lyngfelt
Summary: Chemical looping combustion (CLC) of biomass is a promising technology for power generation with integrated carbon capture, but the alkali content of biomass may lead to bed agglomeration and oxygen carrier absorption issues. Studies have shown that gas-phase alkali emissions in CLC operation can be up to 15 times higher than in OCAC operation, mainly due to steam accelerating the decomposition of alkali compounds in the biomass.
Article
Energy & Fuels
Seong Ju Kim, Ji Hong Moon, Sung-Ho Jo, Sung Jin Park, Jae Young Kim, Geon Uk Beak, Sang Hee Yoon, Ho-Jung Ryu, Ho Won Ra, Sang Jun Yoon, Sung-Min Yoon, Jae Goo Lee, Tae-Young Mun
Summary: The oxygen carrier-aided oxy-circulating fluidized-bed combustion process can improve power plant efficiency and save energy by reducing the demand for pure oxygen supply. This study investigated the addition of iron ore as an oxygen carrier in biomass oxy-CFBC, which resulted in decreased CO emissions and improved CO2 purity.
Article
Energy & Fuels
Dennis Y. Lu, Yewen Tan, Marc A. Duchesne, David McCalden
Summary: Biomass, a complex fuel containing organic and inorganic matter, can cause ash-related problems in combustion systems. This study focuses on estimating the potential for potassium absorption by bed materials in high-potassium biomass fuel combustion. Experiments were conducted to examine the effects of various factors on potassium capture. The results show that temperature and potassium salt type have a significant impact on potassium capture, while the gas atmosphere has a less notable effect.
Article
Materials Science, Multidisciplinary
Birgitta Narindri Rara Winayu, Bing -Hong Li, Hsin Chu
Summary: This study investigates the application of 40% Fe2O3/TiO2 as an oxygen carrier in chemical looping combustion (CLC) technology and examines the factors influencing its reaction rate. The experimental results demonstrate that higher reaction rates and utilization values can be achieved by increasing superficial velocity, operating temperature, and the concentration of CO or H-2 under different operating conditions.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Viktor Stenberg, Vincenzo Spallina, Tobias Mattisson, Magnus Ryden
Summary: This study conducts a techno-economic assessment for processes with inherent CO2 separation, presenting two process configurations integrating steam reforming with chemical-looping combustion system, and comparing their key performance parameters and economic benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
M. de las Obras Loscertales, A. Cabello, A. Abad, L. F. de Diego
Summary: L-CLCTM is a novel process that combines combustion and desulfurization with CO2 capture. Experimental tests show that high combustion efficiencies can be achieved at moderate temperatures, and a Ca/S molar ratio of 2.25 can result in suitable sulfur retention values.
Article
Energy & Fuels
Giovanny S. de Oliveira, Ciro E. S. Lobo, Carlos E. A. Padilha, Domingos F. S. Souza, Juan A. C. Ruiz
Summary: Brazil aims to reduce its CO2 emissions by utilizing glycerin in Chemical Looping Combustion (CLC). The study evaluates the feasibility of using glycerin in CLC and finds that the addition of ethanol improves combustion efficiency, while the addition of methanol reduces efficiency.
Article
Energy & Fuels
Joseba Moreno, Sally L. Homsy, Max Schmid, Gunter Scheffknecht
Summary: This study investigated the multicyclic behavior of limestone in a 20 kWth CaL facility and analyzed the performance of the carbonator under various process variables. The carbonator design achieved high CO2 capture efficiencies and apparent carbonation rates within the investigated operating conditions. The proposed design could potentially be integrated into existing load-following power plants for more flexible usage of CaL systems.
Article
Agricultural Engineering
Sebastian Schaffer, Tobias Proell, Rafat Al Afif, Christoph Pfeifer
BIOMASS & BIOENERGY
(2019)
Article
Engineering, Chemical
Ziad Hamidouche, Enrica Masi, Pascal Fede, Olivier Simonin, Karl Mayer, Stefan Penthor
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Energy & Fuels
D. Woess, M. Ortner, J. Mensik, R. Kirchmayr, A. Schumergruber, T. Proell
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2019)
Article
Engineering, Chemical
G. Hofer, T. Maerzinger, C. Eder, F. Proell, T. Proell
CHEMICAL ENGINEERING SCIENCE
(2019)
Article
Environmental Sciences
Tobias Proell, Florian Zerobin
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2019)
Article
Construction & Building Technology
Thomas Kitzberger, David Kilian, Jan Kotik, Tobias Proell
ENERGY AND BUILDINGS
(2019)
Article
Energy & Fuels
Klaus Lichtenegger, Andreas Leitner, Thomas Maerzinger, Christine Mair, Andreas Moser, David Woess, Christoph Schmidl, Tobias Proell
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2020)
Article
Engineering, Chemical
Florian Zerobin, Tobias Proll
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Energy & Fuels
Juraj Priscak, Katharina Fuersatz, Matthias Kuba, Nils Skoglund, Florian Benedikt, Hermann Hofbauer
Article
Engineering, Chemical
Christoph Eder, Gerhard Hofer, Julius Beer, Tobias Proell
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Engineering, Chemical
Christoph Eder, Gerhard Hofer, Tobias Proell
Summary: The study investigated wall-to-bed heat transfer in a cross-flow bubbling fluidized bed with continuous solids exchange. Results showed that increasing gas velocity leads to more heat being transported from the probe to the particles, while arranging the tubes more densely in the bed results in less heat transfer.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Tobias Proell, Anders Lyngfelt
Summary: The combination of chemical-looping combustion (CLC) and steam methane reforming (SMR) is a promising method for CO(2) capture and hydrogen production. By optimizing the dimensions of the SMR tube, it is possible to improve the performance and reduce the necessary tube length. Simulation results show that using smaller tube diameters can significantly decrease the required tube length for equivalent gas conversion.
Article
Energy & Fuels
Janjira Hongrapipat, Reinhard Rauch, Shusheng Pang, Pansa Liplap, Weerachai Arjharn, Michael Messner, Christian Henrich, Markus Koch, Hermann Hofbauer
Summary: The co-gasification of refuse derived fuel (RDF) and wood chips in Thailand showed that adding up to 30% RDF pellets did not affect the gasification process, but resulted in higher tar content, which must be completely removed before utilizing the product gas of RDF pellets.
Article
Energy & Fuels
Lukas Netzer, David Woess, Thomas Maerzinger, Werner Mueller, Tobias Proell
Summary: This study aims to demonstrate the advantages of a potential e-highway for logistics companies operating on Austria's roads. The results show that an e-highway can significantly reduce battery capacities and charging infrastructure requirements, with a cost reduction potential of up to 65%.
Article
Construction & Building Technology
Gerhard Hofer, Jan Kotik, Tobias Proell
Summary: The study focuses on optimizing a domestic hot water (DHW) circulation system in a modernized residential building in Vienna by installing a timer switch and temperature switch to control the operation of the circulation pump. The results show that the implementation of a temperature switch can significantly reduce DHW system heat losses, resulting in energy savings and no negative impact on user comfort and safety compliance.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Energy & Fuels
Shitong Fang, Houfan Du, Tao Yan, Keyu Chen, Zhiyuan Li, Xiaoqing Ma, Zhihui Lai, Shengxi Zhou
Summary: This paper proposes a new type of nonlinear VIV energy harvester (ANVEH) that compensates for the decrease in peak energy output at low wind speeds by introducing an auxiliary structure. Theoretical and experimental results show that ANVEH performs better than traditional nonlinear VIV energy harvesters under various system parameter variations.
Article
Energy & Fuels
Wei Jiang, Shuo Zhang, Teng Wang, Yufei Zhang, Aimin Sha, Jingjing Xiao, Dongdong Yuan
Summary: A standardized method was developed to evaluate the availability of solar energy resources in road areas, which combined the Analytic Hierarchy Process (AHP) and the Geographic Information System (GIS). By analyzing critical factors and using a multi-indicator evaluation method, the method accurately evaluated the utilization of solar energy resources and guided the optimal location selection for road photovoltaic (PV) projects. The results provided guidance for the application of road PV projects and site selection for route corridors worldwide, promoting the integration of transportation and energy.
Article
Energy & Fuels
Chang Liu, Jacob A. Wrubel, Elliot Padgett, Guido Bender
Summary: The study investigates the effects of coating defects on the performance of the anode porous transport layer (PTL) in water electrolyzers. The results show that an increasing fraction of uncoated regions on the PTL leads to decreased cell performance, with continuous uncoated regions having a more severe impact compared to multiple thin uncoated strips.
Article
Energy & Fuels
Marcos Tostado-Veliz, Xiaolong Jin, Rohit Bhakar, Francisco Jurado
Summary: In this paper, a coordinated charging price mechanism for clusters of parking lots is proposed. The research shows that enabling vehicle-to-grid characteristics can bring significant economic benefits for users and the cluster coordinator, and vehicle-to-grid impacts noticeably on the risk-averse character of the uncertainty-aware strategies. The developed pricing mechanism can reduce the cost for users, avoiding to directly translate the energy cost to charging points.
Article
Energy & Fuels
Duan Kang
Summary: Building an energy superpower is a key strategy for China and a long-term goal for other countries. This study proposes an evaluation system and index for measuring energy superpower, and finds that China has significantly improved its ranking over the past 21 years, surpassing other countries.
Article
Energy & Fuels
Fucheng Deng, Yifei Wang, Xiaosen Li, Gang Li, Yi Wang, Bin Huang
Summary: This study investigated the synergistic blockage mechanism of sand and hydrate in gravel filling layer and the evolution of permeability in the layer. Experimental models and modified permeability models were established to analyze the effects of sand particles and hydrate formation on permeability. The study provided valuable insights for the safe and efficient exploitation of hydrate reservoirs.
Article
Energy & Fuels
Hao Wang, Xiwen Chen, Natan Vital, Edward Duffy, Abolfazl Razi
Summary: This study proposes a HVAC energy optimization model based on deep reinforcement learning algorithm. It achieves 37% energy savings and ensures thermal comfort for open office buildings. The model has a low complexity, uses a few controllable factors, and has a short training time with good generalizability.
Article
Energy & Fuels
Moyue Cong, Yongzhuo Gao, Weidong Wang, Long He, Xiwang Mao, Yi Long, Wei Dong
Summary: This study introduces a multi-strategy ultra-wideband energy harvesting device that achieves high power output without the need for external power input. By utilizing asymmetry, stagger array, magnetic coupling, and nonlinearity strategies, the device maintains a stable output voltage and high power density output at non-resonant frequencies. Temperature and humidity monitoring are performed using Bluetooth sensors to adaptively assess the device.
Article
Energy & Fuels
Tianshu Dong, Xiudong Duan, Yuanyuan Huang, Danji Huang, Yingdong Luo, Ziyu Liu, Xiaomeng Ai, Jiakun Fang, Chaolong Song
Summary: Electrochemical water splitting is crucial for hydrogen production, and improving the hydrogen separation rate from the electrode is essential for enhancing water electrolyzer performance. However, issues such as air bubble adhesion to the electrode plate hinder the process. Therefore, a methodology to investigate the two-phase flow within the electrolyzer is in high demand. This study proposes using a microfluidic system as a simulator for the electrolyzer and optimizing the two-phase flow by manipulating the micro-structure of the flow.
Article
Energy & Fuels
Shuo Han, Yifan Yuan, Mengjiao He, Ziwen Zhao, Beibei Xu, Diyi Chen, Jakub Jurasz
Summary: Giving full play to the flexibility of hydropower and integrating more variable renewable energy is of great significance for accelerating the transformation of China's power energy system. This study proposes a novel day-ahead scheduling model that considers the flexibility limited by irregular vibration zones (VZs) and the probability of flexibility shortage in a hydropower-variable renewable energy hybrid generation system. The model is applied to a real hydropower station and effectively improves the flexibility supply capacity of hydropower, especially during heavy load demand in flood season.
Article
Energy & Fuels
Zhen Wang, Kangqi Fan, Shizhong Zhao, Shuxin Wu, Xuan Zhang, Kangjia Zhai, Zhiqi Li, Hua He
Summary: This study developed a high-performance rotary energy harvester (AI-REH) inspired by archery, which efficiently accumulates and releases ultralow-frequency vibration energy. By utilizing a magnetic coupling strategy and an accumulator spring, the AI-REH achieves significantly accelerated rotor speeds and enhanced electric outputs.
Article
Energy & Fuels
Yi Yang, Qianyi Xing, Kang Wang, Caihong Li, Jianzhou Wang, Xiaojia Huang
Summary: In this study, a novel hybrid Quantile Regression (QR) model is proposed for Probabilistic Load Forecasting (PLF). The model integrates causal dilated convolution, residual connection, and Bidirectional Long Short-Term Memory (BiLSTM) for multi-scale feature extraction. In addition, a Combined Probabilistic Load Forecasting System (CPLFS) is proposed to overcome the inherent flaws of relying on a single model. Simulation results show that the hybrid QR outperforms traditional models and CPLFS exceeds the best benchmarks in terms of prediction accuracy and stability.
Article
Energy & Fuels
Wen-Jiang Zou, Young-Bae Kim, Seunghun Jung
Summary: This paper proposes a dynamic prediction model for capacity fade in vanadium redox flow batteries (VRFBs). The model accurately predicts changes in electrolyte volume and capacity fade, enhancing the competitiveness of VRFBs in energy storage applications.
Article
Energy & Fuels
Yuechao Ma, Shengtie Wang, Guangchen Liu, Guizhen Tian, Jianwei Zhang, Ruiming Liu
Summary: This paper focuses on the balance of state of charge (SOC) among multiple battery energy storage units (MBESUs) and bus voltage balance in an islanded bipolar DC microgrid. A SOC automatic balancing strategy is proposed considering the energy flow relationship and utilizing the adaptive virtual resistance algorithm. The simulation results demonstrate the effectiveness of the proposed strategy in achieving SOC balancing and decreasing bus voltage unbalance.
Article
Energy & Fuels
Raad Z. Homod, Basil Sh. Munahi, Hayder Ibrahim Mohammed, Musatafa Abbas Abbood Albadr, Aissa Abderrahmane, Jasim M. Mahdi, Mohamed Bechir Ben Hamida, Bilal Naji Alhasnawi, A. S. Albahri, Hussein Togun, Umar F. Alqsair, Zaher Mundher Yaseen
Summary: In this study, the control problem of the multiple-boiler system (MBS) is formulated as a dynamic Markov decision process and a deep clustering reinforcement learning approach is applied to obtain the optimal control policy. The proposed strategy, based on bang-bang action, shows superior response and achieves more than 32% energy saving compared to conventional fixed parameter controllers under dynamic indoor/outdoor actual conditions.
