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Numerical analysis on the dynamic response of a plate-and-frame membrane humidifier for PEMFC vehicles under various operating conditions
- Source :
- Open Physics, Vol 16, Iss 1, Pp 641-650 (2018)
- Publication Year :
- 2018
- Publisher :
- Walter de Gruyter GmbH, 2018.
-
Abstract
- PEMFC needs to be maintained at an appropriate temperature and humidity in a rapidly changing environment for automobile applications. In this study, a pseudo-multi-dimensional dynamic model for predicting the heat and mass transfer performance of a plate-and-frame membrane humidifier for PEMFC vehicles is developed. Based on the developed model, the variations in the temperature and relative humidity at the dry air outlet are investigated according to the air flow acceleration. Moreover, the dynamic response is analyzed as a function of the amplitude and period of the sinusoidal air flow rate at actual operating conditions. The effects of heat transfer on the dynamic response are more dominant than those of mass transfer. The settling time of the temperature and relative humidity at the dry air outlet decrease with the increase in air flow acceleration. In addition, the variations in the temperature and relative humidity at the dry air outlet increase with the increases in the amplitude and period of the sinusoidal air flow rate.
- Subjects :
- Materials science
pemfc
Physics
QC1-999
020209 energy
Numerical analysis
Plate heat exchanger
General Physics and Astronomy
Proton exchange membrane fuel cell
02 engineering and technology
Mechanics
44.27.+g
021001 nanoscience & nanotechnology
44.05.+e
Membrane
88.30.pd
plate-and-frame membrane humidifier
Mass transfer
0202 electrical engineering, electronic engineering, information engineering
88.30.gg
numerical model
0210 nano-technology
dynamic response
heat and mass transfer
Subjects
Details
- ISSN :
- 23915471
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Open Physics
- Accession number :
- edsair.doi.dedup.....061359dfa5274527664fb435c4e01c42