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Interfacial Phenomena and Heat Transfer
ESCI SJR: 0.146

ISSN Imprimir: 2169-2785
ISSN En Línea: 2167-857X

Open Access

Interfacial Phenomena and Heat Transfer

DOI: 10.1615/InterfacPhenomHeatTransfer.2019028952
pages 197-208

EFFECT OF PARALLEL CHANNELS ORIENTATION ON TWO-PHASE FLOW AND PERFORMANCE OF A DIRECT METHANOL FUEL CELL

Jie Lin Jia
MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
Hang Guo
MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
Fang Ye
MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
Chong Fang Ma
MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
Oleg A. Kabov
Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, 1, Acad. Lavrentyev Ave., Novosibirsk, 630090, Russia; Institute of Power Engineering, National Tomsk Polytechnic Research University, 7, Usova Street, Tomsk, 634050, Russia; Novosibirsk State University, 2, Pirogova str., Novosibirsk, 630090, Russia

SINOPSIS

The effect of rotation angles on a direct methanol fuel cell's performance and carbon dioxide behavior is experimentally studied. For this purpose, a transparent window was added to the anode plate of the cell. The anode plate, with 14 parallel rectangular channels, is used in the test. The cross-sectional area of the channels is 2 mm × 2 mm, the ribs are 2 mm in width, and the channel is 52 mm long. By rotating the cell clockwise and counterclockwise in the vertical plane, the cell performance is investigated and compared to that in the vertical direction (0°). The experimental results show that when the cell is rotated the bubble size increases with the rotation angles and the bubbles slowly escape into the channels. The gas slugs move fast in the outlet manifold and the length becomes short when the cell is rotated in the clockwise direction. When the cell is rotated counterclockwise, gas columns appear at the exit side of the upper parts of the flow field. The amount of flow channels appearing in the gas columns increases with the rotation angles. In addition, the cell voltage is higher when the cell is rotated in the clockwise compared to the counterclockwise direction under the same rotation angle.


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