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Pressure analysis on two-step high pressure reducing system for hydrogen fuel cell electric vehicle

Chen, Fu qiang; Zhang, Ming; Qian, Jin yuan LU ; Chen, Li Long and Jin, Zhi-jiang (2016) In International Journal of Hydrogen Energy
Abstract

Hydrogen fuel cell electric vehicle (FCEV) can achieve zero exhaust emission and zero pollution. In order to make FCEV reach a farther travel distance, greater demands are put on its pressure reducing system. In this paper, a two-step high pressure reducing system for FCEV is proposed. The system is made up of two parts, a new high multi-stage pressure reducing valve (HMSPRV) and a multi-stage muffler. As a new system, its feasibility has to be verified. Since the valve opening condition has a great effect on hydrogen flow, pressure reduction and energy consumption, different valve opening conditions are taken as the research point. The flow field analysis of the new HMSPRV is conducted on three aspects: pressure field, velocity field... (More)

Hydrogen fuel cell electric vehicle (FCEV) can achieve zero exhaust emission and zero pollution. In order to make FCEV reach a farther travel distance, greater demands are put on its pressure reducing system. In this paper, a two-step high pressure reducing system for FCEV is proposed. The system is made up of two parts, a new high multi-stage pressure reducing valve (HMSPRV) and a multi-stage muffler. As a new system, its feasibility has to be verified. Since the valve opening condition has a great effect on hydrogen flow, pressure reduction and energy consumption, different valve opening conditions are taken as the research point. The flow field analysis of the new HMSPRV is conducted on three aspects: pressure field, velocity field and energy consumption. It can be found that both the pressure reducing and velocity increasing gradients mainly reflect at those throttling components for all valve openings. For energy consumption, in the comprehensive study of flow vortexes and turbulent dissipation rate, it can be found that the larger of the valve opening, the larger of energy consumption. Then, a thermo-fluid-solid coupling analysis is conducted on the new HMSPRV, and it is concluded that the new system meets strength requirement. Furthermore, as the second step of the high pressure reducing system, the flow and pressure fields of multi-stage muffler are investigated. The five-stage muffler is exactly designed to complete the whole pressure reducing process. This study can provide technological support for achieving pressure regulation in the hydrogen transport system of FCEV when facing complex conditions, and it can also benefit the further research work on energy saving and multi-stage flow of pressure reducing devices.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Computational fluid dynamics, High multi-stage pressure reducing valve, Hydrogen fuel cell electric vehicle, Multi-stage muffler, Valve opening
in
International Journal of Hydrogen Energy
publisher
Elsevier
external identifiers
  • scopus:85014209096
  • wos:000403381400080
ISSN
0360-3199
DOI
10.1016/j.ijhydene.2017.02.077
language
English
LU publication?
yes
id
2e1688a6-f80c-49d0-b51c-64da6deafe5b
date added to LUP
2017-03-15 14:41:35
date last changed
2017-09-18 11:32:34
@article{2e1688a6-f80c-49d0-b51c-64da6deafe5b,
  abstract     = {<p>Hydrogen fuel cell electric vehicle (FCEV) can achieve zero exhaust emission and zero pollution. In order to make FCEV reach a farther travel distance, greater demands are put on its pressure reducing system. In this paper, a two-step high pressure reducing system for FCEV is proposed. The system is made up of two parts, a new high multi-stage pressure reducing valve (HMSPRV) and a multi-stage muffler. As a new system, its feasibility has to be verified. Since the valve opening condition has a great effect on hydrogen flow, pressure reduction and energy consumption, different valve opening conditions are taken as the research point. The flow field analysis of the new HMSPRV is conducted on three aspects: pressure field, velocity field and energy consumption. It can be found that both the pressure reducing and velocity increasing gradients mainly reflect at those throttling components for all valve openings. For energy consumption, in the comprehensive study of flow vortexes and turbulent dissipation rate, it can be found that the larger of the valve opening, the larger of energy consumption. Then, a thermo-fluid-solid coupling analysis is conducted on the new HMSPRV, and it is concluded that the new system meets strength requirement. Furthermore, as the second step of the high pressure reducing system, the flow and pressure fields of multi-stage muffler are investigated. The five-stage muffler is exactly designed to complete the whole pressure reducing process. This study can provide technological support for achieving pressure regulation in the hydrogen transport system of FCEV when facing complex conditions, and it can also benefit the further research work on energy saving and multi-stage flow of pressure reducing devices.</p>},
  author       = {Chen, Fu qiang and Zhang, Ming and Qian, Jin yuan and Chen, Li Long and Jin, Zhi-jiang},
  issn         = {0360-3199},
  keyword      = {Computational fluid dynamics,High multi-stage pressure reducing valve,Hydrogen fuel cell electric vehicle,Multi-stage muffler,Valve opening},
  language     = {eng},
  month        = {12},
  publisher    = {Elsevier},
  series       = {International Journal of Hydrogen Energy},
  title        = {Pressure analysis on two-step high pressure reducing system for hydrogen fuel cell electric vehicle},
  url          = {http://dx.doi.org/10.1016/j.ijhydene.2017.02.077},
  year         = {2016},
}