A 3 dimensional numerical model to study the effect of GDL porosity on high temperature PEM fuel cells
| Autor: | Vikalp Jha, Balaji Krishnamurthy, R. Hariharan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Mechanical Engineering Flow (psychology) Proton exchange membrane fuel cell chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Oxygen Cathode 010305 fluids & plasmas law.invention chemistry law 0103 physical sciences Fuel cells Composite material 0210 nano-technology Porosity Water vapor |
| Zdroj: | International Journal of Heat and Mass Transfer. 161:120311 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2020.120311 |
| Popis: | A three dimensional mathematical model was developed to study the effect of GDL porosity on high temperature fuel cells. The effect of varying GDL porosity on the varying oxygen and water vapor concentration in the cathode flow fields was studied. Model predicts that a GDL porosity between the ranges of 0.5–0.6 was optimal for the performance of a high temperature fuel cell. For the given set of parameters, a 7% decrease in oxygen consumption on the cathode is seen when the GDL porosity is increased from 0.6 to 0.7. Further increasing the GDL porosity is seen to decrease the oxygen consumption further. Model predictions are compared with experimental data and found to compare well. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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