Effect of depth and diameter of cylindrical cavity in a plate-type methanol steam reformer on estimated net power of PEMFC
| Autor: | Shiang Wuu Perng, Horng Wen Wu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen 020209 energy Nuclear engineering Energy Engineering and Power Technology chemistry.chemical_element Proton exchange membrane fuel cell 02 engineering and technology Computational fluid dynamics Electrochemical cell Steam reforming symbols.namesake chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering Arrhenius equation Renewable Energy Sustainability and the Environment business.industry Fluid mechanics 021001 nanoscience & nanotechnology Fuel Technology Nuclear Energy and Engineering chemistry symbols Methanol 0210 nano-technology business |
| Zdroj: | Energy Conversion and Management. 177:190-209 |
| ISSN: | 0196-8904 |
| DOI: | 10.1016/j.enconman.2018.09.066 |
| Popis: | The plate-type methanol steam reformer (MSR) designed for improving its reforming performance is integrated with proton exchange membrane fuel cells (PEMFCs) regarded as a hopeful miniature power source. This study then uses computational fluid dynamics (CFD) through SIMPLE-C algorithm and Arrhenius form of reaction model to study the reforming performance of a plate-type MSR with the cylindrical cavities installed on the bottom of reformer channels. The influences of depth and diameter of cavities, and heated-wall temperature on reforming performance of reformer and estimated net power output of PEMFC have been examined with the same catalyst and inlet conditions in various flow channels of plate-type MSR. The results display that the installation of cylindrical cavities obviously improves the methanol conversion rate and hydrogen yield of a plate-type MSR. Compared with the traditional plate-type MSR, installing the cylindrical cavities of DC = 1.4 mm and HC = 1.5 mm on the plate-type MSR channels leads to the best enhancement in the methanol conversion rate by 22.65% and in the hydrogen yield by 64.52% at Theater = 250 °C. Moreover, the novel plate-type MSR with the cylindrical cavities of DC = 1.4 mm and HC = 1.5 mm acquires the best augmentation of 22.46% in the estimated net power output of PEMFC at Theater = 250 °C. |
| Databáze: | OpenAIRE |
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