20.500.12556/RUL-126397 Conceptual design of an integrated thermally self-sustained methanol steam reformer high-temperature PEM fuel cell stack manportable power generator 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. 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 gorivne celice protonsko prevodne membrane procesorji goriva parni reformerji metanola toplotno integrirani sistemi modeliranje energetskih sistemov true false true Angleški jezik Slovenski jezik Članek v reviji 2021-04-20 22:58:37 2021-04-20 22:58:43 2025-03-19 10:17:21 0000-00-00 00:00:00 2017 0 0 Str. 16700-16713 iss. 26 Vol. 42 Jun. 2017 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 2017-05-09 2017-06-12 2019-06-12 [620.9:66]:502.174.3 0360-3199 10.1016/j.ijhydene.2017.05.057 15546139 RAZ_Lotric_Andrej_2017.pdf RAZ_Lotric_Andrej_2017.pdf 1 481AB4E90A598D5DBE081EFE81702EA3 edbe0b296256a8055b1fc5253d82b177f17b95fdc9cd19a8b0e667e04ba76b5d f6680a4e-a21e-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142344 RAZ_Lotric_Andrej_2017.docx RAZ_Lotric_Andrej_2017.docx 1 B819ECB67163830818541B3D3BE3C884 262d7c6b32f1995fdbac8872b44d7747f024eb31938a2d5c9841cacde6a91269 c9c2d747-a21f-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142345 http://www.sciencedirect.com/science/article/pii/S0360319917319225 1 321039a2-a21b-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142343 Fakulteta za strojništvo 0 0 0