Measurement and estimation of species distribution in a direct methanol fuel cell
International Journal of Hydrogen Energy, cilt.35, sa.5, ss.2151-2159, 2010 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 35 Sayı: 5
- Basım Tarihi: 2010
- Doi Numarası: 10.1016/j.ijhydene.2009.09.057
- Dergi Adı: International Journal of Hydrogen Energy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2151-2159
- Anahtar Kelimeler: Direct methanol fuel cell, Mathematical modeling, Methanol concentration, Performance measurement
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
Determination of methanol concentration in a direct methanol fuel cell is crucial for design improvement and performance enhancement. Methanol and water concentrations in a direct methanol fuel cell are experimentally and numerically investigated. In the experimental program, a single cell direct methanol fuel cell is developed and an experimental setup is devised to measure methanol and water concentrations and performance of the cell depending on operating conditions. In theoretical program a mathematical model which includes fluid flow, species distribution, electric field and electrochemistry is adapted and numerically solved. The results showed that the performance of a Direct Methanol Fuel Cell (DMFC) is mainly influenced by operating temperature. A large drop in methanol concentration methanol is measured at the inlet section of cell. The mathematical model is found to satisfactorily capture main physics involved in a DMFC. © 2009 Professor T. Nejat Veziroglu.