Patcharavorachot, Yaneeporn
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Patcharavorachot, Yaneeporn
Alternative Name
Patcharavorachot, Y.
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Email
yaneeporn.pa@kmitl.ac.th
26 results
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Item type:Publication, Analysis of unbalanced pressure PEM electrolyzer for high pressure hydrogen production(2017-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Modeling and optimization of proton-conducting solid oxide electrolysis cell: Conversion of CO2 into value-added products(2016-11-01); Arpornwichanop, AmornchaiProton-conducting solid oxide electrolysis cells (SOEC-H<sup>+</sup>) are a promising technology that can utilize carbon dioxide to produce syngas. In this work, a detailed electrochemical model was developed to predict the behavior of SOEC-H<sup>+</sup> and to prove the assumption that the syngas is produced through a reversible water gas-shift (RWGS) reaction. The simulation results obtained from the model, which took into account all of the cell voltage losses (i.e., ohmic, activation, and concentration losses), were validated using experimental data to evaluate the unknown parameters. The developed model was employed to examine the structural and operational parameters. It is found that the cathode-supported SOEC-H<sup>+</sup> is the best configuration because it requires the lowest cell potential. SOEC-H<sup>+</sup> operated favorably at high temperatures and low pressures. Furthermore, the simulation results revealed that the optimal S/C molar ratio for syngas production, which can be used for methanol synthesis, is approximately 3.9 (at a constant temperature and pressure). The SOEC-H<sup>+</sup> was optimized using a response surface methodology, which was used to determine the optimal operating conditions to minimize the cell potential and maximize the carbon dioxide flow rate. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of anode-cathode exhaust gas recirculation on energy recuperation in a solid oxide fuel cell-gas turbine hybrid power system(2016-01-01); Arpornwichanop, AmornchaiA solid oxide fuel cell-gas turbine (SOFC-GT) hybrid system supplying liquid fuel as ethanol exhibits promise as an auxiliary power unit. In this study, the recirculation of anode and cathode exhaust gas in the SOFC-GT system is proposed to improve the efficiency of heat management in the SOFC-GT hybrid system. The key operating parameters, such as fuel utilization factor and the cell and GT temperatures, are analyzed in terms of the performance of the SOFC-GT hybrid systems. The simulation results show that the recirculation of anode and cathode exhaust gas has a direct impact on the turbine performance. To maintain the inlet temperature of the small turbine in the range of 873-1223 K, the amount of fuel and air added to the combustor to control the turbine inlet temperature on the system performance is also investigated. A SOFC-GT hybrid system with both anode and cathode exhaust gas recirculation achieves the highest system and thermal efficiency. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Exergoeconomics of hydrogen production from biomass air-steam gasification with methane co-feeding(2017-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of Flow Pattern on Single and Multi-stage High Temperature Proton Exchange Membrane Fuel Cell Stack Performance(2014-01-01); Arpronwichanop, AmornchaiA high-temperature proton exchange membrane fuel cell (HT-PEMFC) is a promising clean and effective technology for power generation because of its simplified water and heat management as well as high CO tolerance. Therefore, it could be possible to directly use a reformate gas for HT-PEMFC without the need for sophisticated purification processes. Due to the non-uniform of H<inf>2</inf> and CO distributions within fuel cells, the stack design is one of the key factors to enhance the performance and efficiency of HT-PEMFC. In this study, a single HT-PEMFC stack is investigated by considering the CO poisoning effect. The mathematical model of HT-PEMFC based on the electrochemical reaction model coupled with the diffusion model of a gas diffusion layer and electrolyte film layer is used for simulation studies. At high fuel utilization, hydrogen is highly consumed and CO concentration increases, having a significant impact on cell performance. The multi-stack HT-PEMFC is designed to minimize the CO poisoning effect and to maximize its efficiency. The power output that is obtained from each cell stack is presented and the overall power output is compared with single cell stack. Effect of different flow patterns, i.e., co-current and counter-current flow, on the HT-PEMFC stack performance is also presented. © 2014 Elsevier B.V. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Hydrogen production form glycerol steam reforming in supercritical water with CO2 absorption unit(2014-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Thermodynamic analysis of hydrogen production from the adsorption-enhanced steam reforming of biogas(2014-01-01); Arpornwichanop, AmornchaiBiogas is considered a potential, renewable fuel to be used as a hydrogen source. At present, a steam reforming is widely used process in hydrogen production, but it needs to be operated at high temperature to achieve high hydrogen yield. Because biogas consists of mostly CO<inf>2</inf>, the hydrogen purification of a reformate gas obtained is another important issue, especially for fuel cell applications. In this study, an enhanced-adsorption steam reforming process in which steam reforming reaction and CO<inf>2</inf> adsorption are occurred in a single unit is investigated. A thermodynamic analysis is performed to study effects of important operating parameters on hydrogen yield and product distribution. It is found that a biogas processor should be operated at high temperatures and inlet steam-T o-methane ratio. The content of CO in the reformate gas increases with increased operating temperature. The steam reforming of biogas coupled with a CO<inf>2</inf> adsorption gives a higher hydrogen product with considerable low CO content, compared to the conventional steam reforming of biogas. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance evaluation of biogas-fed solid oxide fuel cell system coupling with CO2-selective membrane separator(2018-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of different fuel options on performance of high-temperature PEMFC (proton exchange membrane fuel cell) systems(2014-04-15); Arpornwichanop, AmornchaiHigh-temperature proton exchange membrane fuel cells (HT-PEMFCs) have received substantial attention due to their high CO (carbon monoxide) tolerance and simplified water management. The hydrogen and CO fractions affect the HT-PEMFC performance and different fuel sources for hydrogen production result in different product gas compositions. Therefore, the aim of this study is to investigate the theoretical performance of HT-PEMFCs fueled by the reformate gas derived from various fuel options (i.e., methane, methanol, ethanol, and glycerol). Effects of fuel types and CO poisoning on the HT-PEMFC performance are analyzed. Furthermore, the necessity of a water-gas shift (WGS) reactor as a CO removal unit for pretreating the reformate gas is investigated for each fuel type. The methane steam reforming shows the highest possibility of CO formation, whereas the methanol steam reforming produces the lowest quantity of CO in the reformate gas. The methane fuel processing gives the maximum fraction of hydrogen (≈0.79) when the WGS reactor is included. The most suitable fuel is the one with the lowest CO poisoning effect and the maximum fuel cell performance. It is found that the HT-PEMFC system fueled by methanol without the WGS reactor and methane with WGS reactor shows the highest system efficiency (≈50%). © 2014 Elsevier Ltd. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Biomass steam gasification of sugarcane leftover for green diesel production(2018-01-01)