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Conceptual design of an integrated thermally self-sustained methanol steam reformer : high-temperature PEM fuel cell stack manportable power generator
Lotrič, Andrej (Author), Sekavčnik, Mihael (Author), Pohar, Andrej (Author), Likozar, Blaž (Author), Hočevar, Stanko (Author)

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Abstract
We have investigated the concept of an integrated system for small, manportable power units. The focus of this study is the direct thermal coupling of a methanol steam reformer (MSR) and a high-temperature proton exchange membrane fuel cell (HT PEMFC) stack. A recently developed low-temperature (LT) MSR catalyst (CuZnGaOx) was synthesized and tested in a designed reforming reactor. The experimental data show that at 200 °C the complete conversion of methanol is achievable with a hydrogen yield of 45 cm3 min-1 gCAT -1 . An experimental setup for measuring the characteristics of the integrated system was designed and used to measure the characteristics of the two-cell HT PEMFC stack. The obtained kinetic parameters and the HT PEMFC stack characteristics were used in the modeling of the integrated system. The simulations confirmed that the integrated LT MSR/ HT PEMFC stack system, which also includes a vaporizer, can achieve a thermally selfsustained working point. The base-case scenario, established on experimental data, predicts a power output of 8.5 W, a methanol conversion of 98.5%, and a gross electrical efficiency (based on the HHV) of the system equal to 21.7%. However, by implementing certain measures, the power output and the electrical efficiency can readily be raised to 11.1 W and 35.5%, respectively.

Language:English
Keywords:methanol steam reformer, logistic fuel processor, PEM fuel cell, thermal system integration, modeling and optimization, computational fluid dynamics (CFD), fuell cells, proton exchange membranes, fuel processors, methanol steam reforming, heat integrated systems, energy systems modeling
Work type:Article (dk_c)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2017
Article acceptance date:09.05.2017
Article publication date:12.06.2017
Number of pages:Str. 16700-16713
Numbering:Vol. 42, iss. 26
UDC:[620.9:66]:502.174.3
ISSN on article:0360-3199
DOI:10.1016/j.ijhydene.2017.05.057 This link opens in a new window
COBISS.SI-ID:15546139 This link opens in a new window
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Downloads:77
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Record is a part of a journal

Title:International journal of hydrogen energy
Shortened title:Int. j. hydrogen energy
Publisher:Elsevier, International Association for Hydrogen Energy
ISSN:0360-3199
COBISS.SI-ID:3338511 This link opens in a new window

Document is financed by a project

Funder:Drugi - Drug financer ali več financerjev
Funding Programme:NATO
Project no.:EAP.SFPP 984738
Name:Science for Peace and Security
Acronym:SPS

Funder:Drugi - Drug financer ali več financerjev
Funding Programme:Slovenian Ministry of Defense
Project no.:4300-434/2010-1

Funder:Drugi - Drug financer ali več financerjev
Funding Programme:Centre of Excellence for Low-Carbon Technologies
Acronym:CO NOT

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Funding Programme:P2–0152

Funder:Drugi - Drug financer ali več financerjev
Funding Programme:World Federation of Scientists (WFS)

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:12.06.2017

Secondary language

Language:Slovenian
Keywords:gorivne celice, protonsko prevodne membrane, procesorji goriva, parni reformerji metanola, toplotno integrirani sistemi, modeliranje energetskih sistemov

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