Patcharavorachot, Yaneeporn

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Patcharavorachot, Yaneeporn
Alternative Name
Patcharavorachot, Y.
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Email
yaneeporn.pa@kmitl.ac.th

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Now showing 1 - 6 of 6
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    Thermodynamic analysis of a proton conducting SOFC integrated system fuelled by different renewable fuels
    (2021-03-19)
    Saebea, Dang
    ;
    Arpornwichanop, Amornchai
    ;
    Patcharavorachot, Yaneeporn
    This work proposes a power generation system consisting of steam reformer and SOFC–H<sup>+</sup> fuelled by different types of fuel, i.e., ethanol, glycerol and biogas. The performance analysis of integrated system is performed based on thermodynamic calculation through Aspen Plus simulator. The total of the Gibbs free energy minimization is used to determine product composition at equilibrium. The electrochemical model not only considers all voltage losses but also includes the effect of current leakage as a result from the electrolyte used. Considering the operating condition of steam reformer, it is found that the gas product contains the highest amount of hydrogen without the carbon formation when reformer is operated at 973 K with steam to carbon ratio of 1. In addition, the simulation results show that the SOFC–H<sup>+</sup> operated at 973 K and 1 A/cm<sup>2</sup> can provide a suitable compromise between system performances and exhaust gas composition. The use of glycerol reformate has the highest cell and system efficiencies and fuel utilization compared to the others. In addition, the integrated system fuelled by glycerol can release low CO amount whereas there is more heat provided to the surrounding. Therefore, it can be concluded that glycerol is suitable renewable fuel for SOFC–H<sup>+</sup> integrated system.
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    Performance analysis of direct steam reforming of methane in SOFC with SDC-based electrolyte
    (2020-02-01)
    Saebea, D.
    ;
    Authayanun, S.
    ;
    Patcharavorachot, Y.
    This work aims to study on the performance of the SDC-based SOFC with a direct internal reforming of methane at lower temperature in the range of 600–750 ºC. The model of SDC-based SOFC with direct internal reforming mode is simulated and validated. The predicted results are in a good agreement with experimental data. The simulated results indicate that the molar flow rate of the hydrogen produced from the methane steam reforming reaction is higher as an increasing temperature. Moreover, the cathode activation overpotential is obviously reduced. Thus, the increase of temperature from 600 to 700 °C can enhance the average power density of SOFC from 0.19 to 0.42 A/m<sup>2</sup>.
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    Energy and exergy analyses of a hybrid system containing solid oxide and molten carbonate fuel cells, a gas turbine, and a compressed air energy storage unit
    (2021-10-11)
    Jienkulsawad, Prathak
    ;
    Patcharavorachot, Yaneeporn
    ;
    Chen, Yong Song
    ;
    Arpornwichanop, Amornchai
    Design of a hybrid system composed of a solid oxide fuel cell (SOFC), molten carbonate fuel cell (MCFC), gas turbine (GT), and an advanced adiabatic compressed air energy storage (AA-CAES) based on only energy analysis could not completely identify optimal operating conditions. In this study, the energy and exergy analyses of the hybrid fuel cell system are performed to determine suitable working conditions for stable system operation with load flexibility. Pressure ratios of the compressors and energy charging ratios are varied to investigate their effects on the performance of the hybrid system. The hybrid fuel cell system is found to produce electricity up to 60% of the variation in demand. A GT pressure ratio of 2 provides agreeable conditions for efficient operation of the hybrid system. An AA-CAES pressure ratio of 15 and charging ratio of 0.9 assist in lengthening the discharging time during a high load demand based on an electricity variation of 50%.
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    Performance assessment of a hybrid solid oxide and molten carbonate fuel cell system with compressed air energy storage under different power demands
    (2020-01-01)
    Jienkulsawad, Prathak
    ;
    Saebea, Dang
    ;
    Patcharavorachot, Yaneeporn
    ;
    Arpornwichanop, Amornchai
    As electricity demand can vary considerably and unpredictably, it is necessary to integrate energy storage with power generation systems. This study investigates a solid oxide and molten carbonate fuel cell system integrated with a gas turbine (GT) for power generation. The advanced adiabatic compressed air energy storage (AA-CAES) system is designed to enhance the system flexibility. Simulations of the proposed power system are performed to demonstrate the amount of power that can supply to the loads during normal and peak modes of operation under steady-state conditions. The pressure ratios of the GT and AA-CAES and the additional air feed are used to design the system and analyze the system performance. The results show that a small additional air feed to the GT is certainly required for the hybrid system. The GT pressure ratio of 2 provides a maximum benefit. The AA-CAES pressure ratio of 5 is recommended to spare some air in the storage and minimize storage volume. Moreover, implementation of the GT and AA-CAES into the integrated fuel cell system allows the system to cope with the variations in power demand.
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    Performance Evaluation of Solid Oxide Fuel Cell Coupling to Biogas Tri-reforming with Installation of Hydrogen-Selective Membrane Separator
    (2020-01-01)
    Saebea, D.
    ;
    Soisuwan, S.
    ;
    Patcharavorachot, Y.
    Due to high CO<inf>2</inf> composition in biogas, hydrogen concentration produced from the biogas reforming process is low, which has negative effect on the SOFC efficiency. Therefore, aims of this study are to improve and analyze the performance of solid oxide fuel cell (SOFC) integrated with hydrogen production from tri-reforming process of biogas coupling to hydrogen-selective membrane separator. The simulation results show that the increase of pressure increases the hydrogen separation in Pd/Ag membrane separator. The Pd/Ag membrane separator can separate hydrogen of 47.5 %, at 8 bar. When comparing the integrated system of SOFC and biogas tri-reforming without/with installing hydrogen-selective membrane separator, the efficiency of system with coupling to hydrogen-selective membrane separator is higher than that without coupling to hydrogen-selective membrane separator about 13-14.7 %.
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    Comparative Study on Performance of SOFC-GT with/without Anode Exhaust Gas Recirculation
    (2023-01-01)
    Pholboorn, Suthin
    ;
    Saebea, Dang
    ;
    Patcharavorachot, Yaneeporn
    The comparative study on the electrical performance of solid oxide fuel cell combined with gas turbine with/without anode exhaust gas recirculation (SOFC-GTR/SOFC-GT-NR) was presented in this work. Performance analysis was performed through Aspen Plus simulator software. The SOFC system was included the pre-reforming process of methane. The simulation results revealed that the SOFC-GT-R has the maximum efficiency of 81.97% at pre-reforming percentage of 10% and fuel utilization of 0.90 while the highest performance of SOFC-GT-NR is 77.60% at pre-reforming percentage of 70% and fuel utilization of 0.90. From the comparative study, it was found that the SOFC-GT-R has higher efficiency by using lower pre-reforming percentage compared with SOFC-GT-NR.