RT Journal Article
ID 236f78106c36a0f8
A1 Ye, Fang
A1 Jia, Jie Lin
A1 Guo, Hang
A1 Ma, Chong Fang
T1 GAS–LIQUID TWO-PHASE FLOW IN PARALLEL CHANNELS OF A DIRECT METHANOL FUEL CELL
JF Interfacial Phenomena and Heat Transfer
JO IPHT
YR 2017
FD 2018-05-22
VO 5
IS 4
SP 309
OP 319
K1 direct methanol fuel cell
K1 visualization method
K1 CO<sub>2</sub> gas bubble behavior
K1 two-phase flow,
 cell performance
AB The CO<sub>2</sub> gas bubble behavior in an anode channel and the performance of a transparent direct methanol fuel cell (DMFC) were experimentally investigated. To observe the gas–liquid two-phase flow, the transparent anode plate was
made of polycarbonate, and the anode end plate possessed a 70 mm &times; 70 mm window. The emergence, growth, and
coalescence of the CO<sub>2</sub> bubbles were recorded by a high-speed camera at 250 frames/s<sup>&minus;1</sup>. The DMFC was tested and observed at different current densities, methanol flow rates, and temperatures, which exhibited an obvious influence on the CO<sub>2</sub> gas bubbles' behavior. It was observed that the bubble size increased with the current density and temperature, while the bubble number obviously decreased downstream in the channel. On the other hand, the bubble behavior, particularly its size and gas volume, affected the internal mass transfer of the DMFC and therefore affected the cell performance.

PB Begell House
LK https://www.dl.begellhouse.com/journals/728e68e739b67efe,4fc135f937a1776f,236f78106c36a0f8.html