Theoretical analysis of a glycerol reforming and high-temperature PEMFC integrated system: Hydrogen production and system efficiency
2013
Authayanun, Suthida | Wiyaratn, Wisitsree | Assabumrungrat, Suttichai | Arpornwichanop, Amornchai
The aim of this study is to theoretically analyze the performance and efficiency of a glycerol processing and high-temperature proton exchange membrane fuel cell (HT-PEMFC) integrated system. Glycerol is considered a renewable fuel source for hydrogen production. In comparison with methane, glycerol shows a better performance in terms of high hydrogen production and low possibility to carbon formation. However, the content of CO₂ in the reformate gas and its dilution effect as well as the energy required for the glycerol processor should be concerned. When considering the operation of the glycerol processor for HT-PEMFCs, the reformer temperature (TR) has a significant influence on hydrogen content in the reformate gas, whereas the steam-to-carbon ratio (S/C) affects hydrogen production slightly. In addition, the content of CO in the reformate gas satisfies the required constraint for HT-PEMFC operation. The performance and efficiency of the glycerol reforming process and HT-PEMFCs integrated system are evaluated by considering a heat recovery and a water balance.
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