1 Ocak 2021 Dergi makalesi Açık Erişim

Sayar, Asli; Eskin, Nurdil

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    <subfield code="a">Experimental and theoretical analysis of a natural gas fuel processor</subfield>
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    <subfield code="p">INTERNATIONAL JOURNAL OF HYDROGEN ENERGY</subfield>
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    <subfield code="a">In this study, a natural gas fuel processor was experimentally and theoretically investigated. The constructed 2.0 kWth fuel processor is suitable for a residential-scale high temperature proton exchange membrane fuel cell. The system consists of an autothermal reformer; gas clean-up units, namely high and low-temperature water-gas shift reactors; and utilities including feeding unit, burner, evaporator and heat exchangers. Commercial monolith catalysts were used in the reactors. The simulation was carried out by using ASPEN HYSYS program. A validated kinetic model and adiabatic equilibrium model were both presented and compared with experimental data. The nominal operating conditions which were determined by the kinetic model were the steam-to-carbon ratio of 3.0, the oxygen-to-carbon ratio of 0.5 and the inlet temperatures of 450 degrees C for autothermal reformer, 400 degrees C for high-temperature water-gas shift reactor and 310 degrees C for low-temperature water-gas shift reactor. Experimental results at the nominal condition showed that the performance criteria of the hydrogen yield, the fuel conversion and the efficiency were 2.53, 93.5% and 82.3% (higher heating value-HHV), respectively. The validated kinetic model was further used for the determination of 2-10kW thermal fuel processor efficiency which was increasing linearly up-to 86.3% (HHV). (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.</subfield>
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    <subfield code="u">Istanbul Tech Univ, Mech Engn Dept, Istanbul, Turkey</subfield>
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