Research Article
Parametric Analysis of a High Temperature PEM Fuel Cell Based Microcogeneration System
Table 2
Validation of cogeneration system.
| | Variable | HTPEM | HTPEM [19] | LTPEM [25] |
| | Operating conditions | | | | | Current density (A/m2) | 3000 | 4200 | 2000 | | Operating temperature (K) | 423 | 433 | 347 | | Steam-carbon-ratio | 3 | 3.5 | — | | Fuel stoichiometry | 1.25 | 1.2 | 1 | | Air stoichiometry | 2 | 2 | — | | System outputs | | | | | Power (W) | 1000 | 1000 | 4800 | | Cell voltage (V) | 0.55 | 0.5 | 0.74 | | Fuel processor efficiency (LHV) | 80.9 | 78 | — | | Electrical efficiency (LHV) | 27.7 | 26 | 44 | | Thermal efficiency (LHV) | 51.7 | 52 | 36 | | Cogeneration efficiency (LHV) | 79.4 | 78 | 80 | | Fuel type | NG | NG | Hydrogen |
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Values based on HHV
Numerical data by authors
Numerical data of a HT-PEM system
Experimental data of a LT-PEM system.
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