DMFCsystem design for portable applications
| العنوان: | DMFCsystem design for portable applications |
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| المؤلفون: | Narayanan, S. R., Valdez, T. I., Rohatgi, N. |
| المصدر: | Handbook of Fuel Cells ; ISBN 9780470741511 9780470974001 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2010 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Direct methanol fuel cells (DMFCs) in portable applications are expected to provide substantially higher energy density and longer operating times over advanced batteries. The time threshold of advantage of using a fuel cell instead of a battery is almost independent of the power level, and is determined by the power density of the fuel cell and its operating efficiency. The various requirements for portable fuel cells that determine system design are defined with examples. The system design process and analysis methods are illustrated. The characteristics of cells and stacks required for system design are described. The dependence of DMFC stack performance on airflow rate, methanol concentration and temperature are necessary for developing closed loop mathematical models for system design. Such a closed loop system model has been developed and the consequences of varying airflow rate on water recovery, thermal management and overall system performance have been analyzed. Using this model, the effect of crossover rate on the overall efficiency, power density and the operating methanol concentrations have also been investigated. Effect of components on the overall power budget and design issues relating to start‐up and transient response are also discussed. |
| نوع الوثيقة: | other/unknown material |
| اللغة: | English |
| ردمك: | 978-0-470-74151-1 978-0-470-97400-1 0-470-74151-1 0-470-97400-1 |
| DOI: | 10.1002/9780470974001.f306075 |
| الإتاحة: | https://doi.org/10.1002/9780470974001.f306075Test |
| حقوق: | http://doi.wiley.com/10.1002/tdm_license_1.1Test |
| رقم الانضمام: | edsbas.1928EE3C |
| قاعدة البيانات: | BASE |
| ردمك: | 9780470741511 9780470974001 0470741511 0470974001 |
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| DOI: | 10.1002/9780470974001.f306075 |