Numerical investigation of the flow-pressure characteristics in the vortex hydrogen circulating pump

AIP Advances, Journal Year: 2025, Volume and Issue: 15(2)

Published: Feb. 1, 2025

The hydrogen circulation pump is one of the core components cycle system. To solve problem low density and possibility leakage, a vortex designed. Taking three-dimensional flow field as research object, CFD (computational fluid dynamics) numerical calculation model cavity was established, internal simulation performed to analyze performance characteristics at different speeds determine. investigate effects rates 80 L/min, 100 120 140 rotational r/min, number vanes 32, 36, 40 on circulating pump. It found that when speed maintained 15 000 rpm, rate interval from L/min its pressure difference always around 270 Pa; When guaranteed be constant, change rotor, results show higher speed, differ-ence in between inlet outlet; studying effect vanes, average static most stable 101 345 Pa, while value largest reaches 40. This work provides ideas for system fuel cells future.

Language: Английский

Effects of operating parameters and fluids on the performance of a hydrogen regenerative flow compressor in a proton exchange membrane fuel cell system

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126326 - 126326

Published: March 1, 2025

Language: Английский