Exergetic Optimization of a PEM Fuel Cell for Domestic Hot Water HeaterSource: Journal of Fuel Cell Science and Technology:;2005:;volume( 002 ):;issue: 004::page 284DOI: 10.1115/1.2041672Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a 5kW PEM fuel cell including burner, steam reformer, and water heater for domestic application has been considered. Water is used for cooling of the fuel cell. Cold water is passed through a cooling channel, warmed up and used for domestic water heating. To increase the efficiency, outlet steam of fuel cell is fed to the reformer. The perfomance of the system is optimized by exergy analysis based on the second law of thermodynamics. Also, the effect of burner, fuel cell temperature and stoichiometric air fuel ratio are investigated. In this analysis, pressure loss in the fuel cell and heat transfer of the cooling channel are taken into account whereas, pressure loss in burner and reformer are neglected. Results show, to minimize the entropy generation, fuel cell temperature must be increased to maximize PEM fuel cell temperature. Also, burner and reformer temperature and stoichiometric air fuel ratio must be decreased to 900K, and λ=2, respectively.
keyword(s): Pressure , Temperature , Entropy , Hot water , Fuel cells , Cooling , Channels (Hydraulic engineering) , Proton exchange membrane fuel cells , Exergy analysis , Fuels , Heat transfer , Flow (Dynamics) , Optimization AND Water ,
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| contributor author | M. H. Saidi | |
| contributor author | A. Abbassi | |
| contributor author | M. A. Ehyaei | |
| date accessioned | 2017-05-09T00:16:44Z | |
| date available | 2017-05-09T00:16:44Z | |
| date copyright | November, 2005 | |
| date issued | 2005 | |
| identifier issn | 2381-6872 | |
| identifier other | JFCSAU-28923#284_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/132087 | |
| description abstract | In this paper, a 5kW PEM fuel cell including burner, steam reformer, and water heater for domestic application has been considered. Water is used for cooling of the fuel cell. Cold water is passed through a cooling channel, warmed up and used for domestic water heating. To increase the efficiency, outlet steam of fuel cell is fed to the reformer. The perfomance of the system is optimized by exergy analysis based on the second law of thermodynamics. Also, the effect of burner, fuel cell temperature and stoichiometric air fuel ratio are investigated. In this analysis, pressure loss in the fuel cell and heat transfer of the cooling channel are taken into account whereas, pressure loss in burner and reformer are neglected. Results show, to minimize the entropy generation, fuel cell temperature must be increased to maximize PEM fuel cell temperature. Also, burner and reformer temperature and stoichiometric air fuel ratio must be decreased to 900K, and λ=2, respectively. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Exergetic Optimization of a PEM Fuel Cell for Domestic Hot Water Heater | |
| type | Journal Paper | |
| journal volume | 2 | |
| journal issue | 4 | |
| journal title | Journal of Fuel Cell Science and Technology | |
| identifier doi | 10.1115/1.2041672 | |
| journal fristpage | 284 | |
| journal lastpage | 289 | |
| identifier eissn | 2381-6910 | |
| keywords | Pressure | |
| keywords | Temperature | |
| keywords | Entropy | |
| keywords | Hot water | |
| keywords | Fuel cells | |
| keywords | Cooling | |
| keywords | Channels (Hydraulic engineering) | |
| keywords | Proton exchange membrane fuel cells | |
| keywords | Exergy analysis | |
| keywords | Fuels | |
| keywords | Heat transfer | |
| keywords | Flow (Dynamics) | |
| keywords | Optimization AND Water | |
| tree | Journal of Fuel Cell Science and Technology:;2005:;volume( 002 ):;issue: 004 | |
| contenttype | Fulltext |