In Situ Investigation of Two-Phase Flow Patterns in Flow Fields of PEFC’s Using Neutron Radiography
✍ Scribed by A.B. Geiger; A. Tsukada; E. Lehmann; P. Vontobel; A. Wokaun; G.G. Scherer
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 303 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1615-6846
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A novel in situ method for the investigation of the two‐phase flow patterns occurring in the flow fields of polymer electrolyte fuel cells (PEFC’s) has been developed. In these experiments, the gas / liquid two‐phase flow in hydrogen fuel cells as well as in direct methanol fuel cells (DMFC’s) has been studied. Unique results and the promising use of neutron radiography for PEFC research are shown. Its current limitations but also future developments and opportunities are discussed.
📜 SIMILAR VOLUMES
This paper reports the investigation of the structure of two-phase helium flows used for cryostatically controlling superconducting magnets in installations such as HERA, NET, UNK and KEK. Flow pattern maps for horizontal round channels and rectangular slot channels are plotted on the basis of exper
Information about the quality and flow patterns of helium two-phase flow has been obtained by using optical fibres and photo-sensitive devices. Light emitted from a LED is scattered by bubbles and turbulence in liquid helium. As bubbles and turbulence in liquid are related to the quality, x, the mea
## Abstract The effect of tube diameter on two‐phase flow patterns was investigated in circular tubes with inner diameters of 0.6, 1.2, 1.7, 2.6, and 3.4 mm using air and water. The gas and liquid superficial velocity ranges were 0.01–50 and 0.01–3 m/s, respectively. The gas and liquid flow rates w