Article
Thermodynamics
Yanju Li, Dongxu Li, Zheshu Ma, Meng Zheng, Zhanghao Lu, Hanlin Song, Xinjia Guo, Wei Shao
Summary: This paper proposes a novel vehicular high temperature proton exchange membrane fuel cell power system integrated with methanol steam reforming and Organic Rankine Cycle. The system improves the net output power and overall performance by utilizing waste heat for hydrogen production and electricity generation.
Article
Thermodynamics
Jinyi Liu, Yongkang Jiang, Xiaosong Zhang, Lirong Fu, Meilong Deng
Summary: An innovative system that integrates a high-temperature proton exchange membrane fuel cell and a pressure swing adsorption device was proposed in this study to improve the performance of a system using impure hydrogen with carbon dioxide. Simulation results confirmed the feasibility of the new system.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Yaneeporn Patcharavorachot, Narissara Chatrattanawet, Dang Saebea, Amornchai Arpornwichanop
Summary: The study proposed an integrated system of pressurized SOFC and supercritical water reforming, with performance determined using the Aspen Plus simulator.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Junjie Zhao, Huawei Chang, Xiaobing Luo, Zhengkai Tu, Siew Hwa Chan
Summary: This study proposes a combined cooling, heating, and power system integrated with methanol-reforming and dehumidification for data centers. The system effectively controls temperature and humidity requirements while recovering low-grade waste heat from PEMFC stacks.
Article
Chemistry, Physical
Mingoo Choi, Minjin Kim, Young-Jun Sohn, Seung-Gon Kim
Summary: The study aims to develop a preheating methodology for a 5 kW HT-PEMFC system, focusing on reducing the warm-up time dominated by the stack warm-up time. By combining coolant heating, reaction heating, and air heating methods, it was found that the coolant and reaction heating method was the most effective in reducing start-up time. Additionally, using an oil heater with variable heating capacity on the target system could reduce start-up time by 23% compared to a fixed capacity heater.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Yanju Li, Dongxu Li, Zheshu Ma, Meng Zheng, Zhanghao Lu
Summary: A thermodynamic model of a vehicular high temperature proton exchange membrane fuel cell (HT-PEMFC) system using phosphoric acid doped polybenzimidazole membrane is developed, and the effects of stack inlet temperature, pressure, and stoichiometric on system performance are analyzed.
Article
Thermodynamics
Nihal Rao, Kumargaurao D. Punase, Vijay Parthasarthy, Santosh K. Gupta
Summary: In this study, the integrated system of ethanol steam reforming and high temperature polymer electrolyte membrane fuel cell is simulated using ASPEN Plus and MATLAB. The optimal operating conditions are determined to maximize hydrogen yield and minimize CO amount.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Biochemistry & Molecular Biology
Dongxu Li, Yanju Li, Zheshu Ma, Meng Zheng, Zhanghao Lu
Summary: The study analyzed the performance of a high-temperature proton exchange membrane fuel cell (HT-PEMFC) and the influence of different parameters, finding that EPC represents a better performance criterion and increasing inlet pressure and doping level can improve its efficiency.
Article
Chemistry, Physical
Shanshan Cai, Hongyang Xu, Yuqi Zou, Song Li, Xiaobing Luo, Zhengkai Tu, Siew Hwa Chan
Summary: With the increase in data centers, energy consumption has grown exponentially, making energy conservation a priority. This study proposes novel integrated power and cooling systems driven by PEMFC, utilizing waste heat and natural cold sources. Three types of systems were constructed and compared in five cities representing different climate regions. The OACCP system shows higher energy efficiency than the HPCCP system, with potential applications in temperate climate regions. This research provides a theoretical basis for selecting appropriate power and cooling systems for data centers in different climates, although further improvements are needed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Sibo Wang, Xiaoyu Hu, Zheng Zhou, Qing Wang, Kequan Ye, Sheng Sui, Mingruo Hu, Fengjing Jiang
Summary: This research compares the performance of LT-PEMFC and HT-PEMFC under the same operating conditions and reveals some mechanisms.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Zaixing Wang, Junkui Mao, Zhenzong He, Fengli Liang
Summary: This study introduces a novel integrated system for power generation utilizing on-site produced hydrogen and heat recovery. Through detailed parametric analysis and thermodynamic evaluation, the system achieved high energy and exergy efficiencies under specific operating parameters. The primary source of exergy destruction within the system was identified as the PEMFC stack.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Biochemistry & Molecular Biology
Yanju Li, Mingfei Yang, Zheshu Ma, Meng Zheng, Hanlin Song, Xinjia Guo
Summary: This paper proposes a combined system consisting of a high-temperature proton exchange membrane fuel cell and an organic Rankine cycle for automotive applications. The feasibility of the model is verified and the numerical simulation results highlight the need to optimize certain components for improved system performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Dongxu Li, Zheshu Ma, Wei Shao, Yanju Li, Xinjia Guo
Summary: This study established a finite time thermodynamic model to analyze the energetic, exergetic and ecological performance of high-temperature proton exchange membrane fuel cells (HT-PEMFC) under different parameters. The results showed that operating temperature, doping level and membrane thickness had a significant effect on the performance, while operating pressure and relative humidity had little influence.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Energy & Fuels
Phan Anh Duong, Bo Rim Ryu, Hyunyong Lee, Hokeun Kang
Summary: This paper presents a novel multigeneration system that utilizes ammonia as the primary fuel for marine vessel applications. The system integrates and thermodynamically investigates various components, including solid oxide fuel cells (SOFC), gas turbines (GT), proton exchange membrane fuel cells (PEMFC), organic Rankine cycle (ORC), steam Rankine cycle (SRC), Kalina cycle (KC), and waste heat boiler (WHB). The primary objective of the integration strategy is to recover waste heat from the SOFC and harness the power generated by the PEMFC, resulting in improved thermal efficiency, reduced vessel startup time, and enhanced environmental sustainability.
Article
Chemistry, Physical
Dmitry Pashchenko
Summary: The paper examines an integrated solar combined cycle system (ISCCS) utilizing solar energy for steam methane reforming and compares its overall efficiency with that of a system utilizing solar energy for steam generation in a steam turbine cycle. Utilizing solar energy for steam methane reforming increases the overall efficiency by 3.5%. If water used for steam methane reforming is condensed from the exhaust gases, the overall efficiency of ISCCS increases by 6.2% to 8.9% compared to the system where solar energy is used for steam generation in a steam turbine cycle. Sankey diagrams based on the energy balance were compiled. Utilizing solar energy for steam methane reforming increases the power share of a gas turbine cycle, with two-thirds in the gas turbine cycle and one-third in the steam turbine cycle.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Zhiming Feng, Pilar Ocon Esteban, Gaurav Gupta, David A. Fulton, Mohamed Mamlouk
Summary: Cross-linked quaternised Poly(2,6-dimethyl-1,4-Phenylene Oxide) (QPPO)-based membranes were prepared with environmentally-friendly chloromethylating reagents, showing high ionic conductivity. The membranes exhibited good performance and mechanical stability in AEM water electrolyser applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Thanaphorn Detchusananard, Phuet Prasertcharoensuk, Yaneeporn Patcharavorachot, Francois Marechal, Amornchai Arpornwichanop
Summary: This study develops a flowsheet model of an integrated methanol synthesis and methanol-to-olefins system to improve the energy efficiency and economic feasibility of fuel production. The optimal operating conditions for maximum exergy efficiency are determined, and heat integration is performed to further enhance the energy usage of the system. The exergoeconomic analysis reveals that the cost of syngas feedstock has a significant impact on the economic viability of the process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Ning-Yih Hsu, Nitika Devi, Yu- Lin, Yi-Hsin Hu, Hung-Hsien Ku, Amornchai Arpornwichanop, Yong-Song Chen
Summary: This study investigates the performance of hydrogen-vanadium redox flow batteries under various conditions, finding that platinum loading and positive electrolyte flow rate significantly impact battery performance, with the best performance achieved at a catalyst loading of 0.3 mg Pt cm(-2) and a positive electrolyte flow rate of around 2 L h(-1). The HVRFB demonstrates an energy efficiency of around 88% when operated at a current density of 80 mA cm(-2) for 200 cycles.
Article
Chemistry, Physical
Ratikorn Sornumpol, Amornchai Arpornwichanop, Yaneeporn Patcharavorachot
Summary: This research proposes a trigeneration system composed of a proton-conducting solid oxide fuel cell (SOFC-H+) and a single-stage LiBr absorption chiller. Models for SOFC-H+ and single-stage LiBr absorption chiller were developed using Aspen Plus V10. Sensitivity analysis reveals that increasing temperature and fuel utilization improves the performance of SOFC-H+, while air to fuel (A/F) ratio and pressure negatively affect electrical and overall system efficiency. For the absorption chiller, the coefficient of performance remains stable and increases when the generator temperature is raised. Optimization suggests that SOFC-H+ should operate at 700 degrees C and 10 bar with a fuel utilization of 0.8 and A/F molar ratio of 2 to achieve a maximum overall efficiency of 93.34%. Energy and exergy analysis show that combined heat and power SOFC-H+ exhibits the highest energy and exergy efficiencies, followed by the trigeneration process, indicating the efficient production of electricity, heating, and cooling through the integration of SOFC-H+ and LiBr absorption chiller.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Phuong-Long Le, Nitika Devi, Justin Chou, Amornchai Arpornwichanop, Yong -Song Chen
Summary: This paper proposes a novel method to improve the performance of open-cathode proton-exchange-membrane fuel cells by collecting water purged from the anode. The experimental results show that this method improves the stack power, and optimal performance is achieved at a humidifier distance of 2 cm.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yaneeporn Patcharavorachot, Wissawa Chalee, Dang Saebea, Amornchai Arpornwichanop
Summary: The combination of proton-conducting solid oxide electrolysis cell (H-SOEC) with dry methane reforming process (H-SOEC/DMR) was proposed to improve the efficiency and water content of syngas production. Performance analysis of the H-SOEC/DMR process showed that CO2 and CH4 conversions exceeded 90% and 80%, respectively, at temperatures ranging from 1073 to 1273 K, resulting in a syngas product with low water content. The highest energy efficiency of 72.80% was achieved at a temperature of 1123 K, pressure of 1 atm, and current density of 2500 A m(-2), which increased to 81.46% with the application of a heat exchanger network. Exergy analysis revealed that the H-SOEC/DMR unit had the lowest exergy efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Gutru Rambabu, Zarina Turtayeva, Feina Xu, Gael Maranzana, Melanie Emo, Sebastien Hupont, Mohamed Mamlouk, Alexandre Desforges, Brigitte Vigolo
Summary: This study examines the effect of pretreatment and doping on the ORR activity of multiwalled carbon nanotubes. The results show that co-doping is an effective method for improving ORR activity, with the doping changing the charge and spin density. The synthesized samples exhibited superior ORR activity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Piyawan Thanahiranya, Pongtorn Charoensuppanimit, Apinan Soottitantawat, Amornchai Arpornwichanop, Nuttha Thongchul, Suttichai Assabumrungrat
Summary: The wise management of biodiesel production can be achieved through fermentation of glycerol into platform chemicals like propionic acid. Reactive extraction technique has been experimentally proven effective in recovering dilute acid, which removes the major bottleneck faced by fermentation. Process simulation enables a thorough assessment of optimal process design and evaluation in terms of economics, energy requirement, and CO2 emissions. The simulation results demonstrate that bio-based production of propionic acid is economically attractive and leads to a significant reduction in CO2 emissions compared to petroleum-based production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Thermodynamics
Prathak Jienkulsawad, Tossaporn Jirabovornwisut, Yong-Song Chen, Amornchai Arpornwichanop
Summary: An electrolyte imbalance in a vanadium redox flow battery (VRFB) can lead to degradation in performance and capacity during long-term operation. Through systematic analysis of VRFB, involving different electrode materials and membranes, factors such as carbon felt structures, cation- and anion-exchange membranes are considered. A dynamic model of VRFB is used to study the impact of electrolyte imbalance on battery performance and gas evolution/self-discharge side reactions. It is found that the rate of capacity loss depends on the material and operating conditions, with vanadium ion variation influenced by gassing and self-discharge side reactions. High energy efficiency is observed in VRFB using Type 3 electrodes and an AMV membrane. Battery operating time, current density, temperature, and total vanadium concentration are found to impact capacity degradation rate. Changes in electrolyte flow rate do not improve battery capacity due to electrolyte imbalance-induced state of charge reduction.
Review
Chemistry, Physical
Rambabu Gutru, Zarina Turtayeva, Feina Xu, Gaeel Maranzana, Ravikumar Thimmappa, Mohamed Mamlouk, Alexandre Desforges, Brigitte Vigolo
Summary: Oxygen reduction reaction (ORR) is a crucial process in various electrochemical devices, but it requires Pt-based catalysts due to significant overpotential. However, the scarcity and cost of Pt hinder the commercialization of these devices. Consequently, researchers are exploring low-cost and abundant materials such as carbon nanomaterials as alternative ORR catalysts. Recent studies have shown that chemical modification of carbon nanomaterials through doping with foreign atoms (e.g., N, S, B, F, P) can enhance their reactivity for ORR. This review comprehensively discusses different doping strategies and the electrochemical properties of heteroatom-doped carbons, aiming to guide the development of advanced non-noble catalysts for ORR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Daniel Niblett, Vahid Niasar, Stuart Holmes, Adrian Mularczyk, Jens Eller, Robert Prosser, Mohamed Mamlouk
Summary: This study investigates the development of water clusters in the gas diffusion layers of polymer electrolyte fuel cells and their impact on oxygen transport in the catalyst layer. The results show that the presence of MPL cracks leads to larger discrete water clusters with increased connectivity.
JOURNAL OF POWER SOURCES
(2023)
Article
Construction & Building Technology
Prathak Jienkulsawad, Kornkamol Eamsiri, Yong-Song Chen, Amornchai Arpornwichanop
Summary: This study proposes a solution that combines photovoltaic and solar thermal collector system with battery and DMFC, and adopts neural network-based adaptive control to meet persistent residential power demand. Simulation results show that the neural network-based control performs better than traditional control methods, and the hybrid system with DMFC can reduce the power requirements from the grid.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Energy & Fuels
Ratikorn Sornumpol, Dang Saebea, Amornchai Arpornwichanop, Yaneeporn Patcharavorachot
Summary: Biomass gasification, coupled with coal and calcium looping carbon dioxide capture process, was analyzed in this study. Increasing gasification temperature, steam-to-feed ratio, calcium oxide-to-feed ratio, and regenerator temperature improved hydrogen production. Optimization revealed that the optimal operating conditions were a gasifier temperature of 700 degrees C, S/F mass ratio of 2, C/B mass ratio of 0.75:0.25, carbonator temperature of 450 degrees C, regenerator temperature of 950 degrees C, and CaO/F mass ratio of 3. Under these conditions, maximum H-2 content of 99.59%vol. (dry basis) and H-2 yield of 92.38 g hydrogen/kg biomass feeding were achieved. The energy efficiency and carbon capture efficiency of the process were determined to be 42.86% and 99.99%, respectively, with a specific CO2 emission of 80.77 g CO2/MJ.
Article
Green & Sustainable Science & Technology
Piyawan Thanahiranya, Pongtorn Charoensuppanimit, Jhuma Sadhukhan, Apinan Soottitantawat, Amornchai Arpornwichanop, Nuttha Thongchul, Suttichai Assabumrungrat
Summary: This study investigates the most promising technology for succinic acid production from glycerol from the biodiesel industry. It is found that the addition of dimethyl sulfoxide (DMSO) is key for bio-based succinic acid production. Evaluation based on techno-economic, energy, exergy, and greenhouse gas (GHG) emissions performances shows that bio-based succinic acid production can compete with the petrochemical route and reduce GHG emissions by 26%.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
K. Wiranarongkorn, K. Im-orb, Y. Patcharavorachot, F. Marechal, A. Arpornwichanop
Summary: To efficiently convert bagasse into furfural and 5-hydroxymethylfurfural (HMF), integrated biorefinery processes were analyzed for their techno-economic feasibility. The results showed that scenario 2, which involved recycling 50% of HMF waste and using the entire bagasse, achieved the highest furfural and HMF production with minimal CO2 emissions. Heat integration also improved the efficiency of the biorefinery plant, leading to maximum profit at 11% internal rate of return. However, the high operating cost associated with solvents and catalysts for HMF production was identified as the largest cost component.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
