Structure simulation design of a cathode air filter for SO2 contamination on a 7 kW fuel cell sightseeing vehicle

2021 ◽  
Author(s):  
Hong Lv ◽  
Yahao Shen ◽  
Xiao Xu ◽  
Wei Zhou ◽  
Daijun Yang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Simulation Design ◽  
Air Filter ◽  
Structure Simulation

Electromagnetic Launcher Structure Simulation Design Research

2014 ◽  
Vol 543-547 ◽  
pp. 1492-1495
Author(s):  
Wei Bo Li ◽  
Yu Dong Qi ◽  
Da Wei Yang ◽  
Xiang Yang Li
Keyword(s):  
Magnetic Force ◽  
Design Research ◽  
Magnetic Field Effect ◽  
Element Model ◽  
Structure Design ◽  
Simulation Software ◽  
Simulation Design ◽  
Structure Simulation ◽  
Electromagnetic Launcher ◽  
Dimensional Finite Element

The paper analyzed the components and work principle of the launch device; calculated the instantaneous velocity of the interceptor and transient magnetic field effect on the interceptor of transient outward along the axial magnetic force through the establishment of two-dimensional finite element model; put forward structure design model with the design variable of interceptor distance between coil turns number, stators distance and emitting coil; determined the structure design with computer simulation software, and obtained optimal structure design scheme by simulation.

Effect of the Capillary Property of Porous Media on the Water Transport Characteristics in a Passive Liquid-Feed DMFC

2010 ◽  
Vol 7 (6) ◽  
Author(s):  
Chao Xu ◽  
Amir Faghri
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Water Transport ◽  
Capillary Flow ◽  
Comprehensive Evaluation ◽  
Heterogeneous Structure ◽  
Two Phase ◽  
Air Filter ◽  
Direct Methanol ◽  
Liquid Water Transport

The porous diffusion medium (DM) used in fuel cells has a complex heterogeneous structure in which both hydrophilic and hydrophobic pores coexist. The capillary flow in such a mixed-wet DM is mainly controlled by the capillary pressure and saturation relation (CPSR). In order to investigate the water transport characteristics in a passive direct methanol fuel cell (DMFC), taking into account the coexistence of the hydrophilic and hydrophobic pores in the DM, we presented the mechanisms of capillary flow in the mixed-wet DM and provided a comprehensive evaluation of the CPSRs used in various existing fuel cell studies. Then, based on a two-dimensional, two-phase, nonisothermal model for the passive DMFC, we investigated the liquid transport phenomena through the mixed-wet DM by employing an experimentally measured mixed-wet CPSR. Moreover, we compared the water transport predicted by the mixed-wet CPSR and the uniform-wet Leverett CPSR for better understanding of the liquid water transport in passive DMFCs. The results show that water transport in the passive DMFC depends greatly on the CPSR of the DM, which demonstrates an urgent need for the accurate CPSRs of the DM used in fuel cells. It is also shown that the dependence of water transport on the CPSRs can be significantly influenced by the use of a hydrophobic air filter layer at the cathode.

scholarly journals Design and Simulation for Fuel Cell Cathode Air Filter

2010 ◽  
Vol 4 (3) ◽  
pp. 460-463
Author(s):  
Hong Lv ◽  
Pai Liu ◽  
Shujuan Cai ◽  
Daijun Yang ◽  
Jianxin Ma
Keyword(s):  
Fuel Cell ◽  
Air Filter ◽  
Fuel Cell Cathode ◽  
Cell Cathode

Sustainable 2,5-furandicarboxylic synthesis by a direct 5-hydroxymethylfurfural fuel cell based on a bifunctional PtNiSx catalyst

2020 ◽  
Vol 56 (88) ◽  
pp. 13611-13614
Author(s):  
Jialu Wang ◽  
Xian Zhang ◽  
Guozhong Wang ◽  
Yunxia Zhang ◽  
Haimin Zhang
Keyword(s):  
Fuel Cell ◽  
Electric Energy ◽  
Value Added ◽  
Chemical Energy ◽  
New Type

A new type of direct 5-hydroxymethylfurfural (HMF) oxidation fuel cell based on a bifunctional PtNiSx/CB catalyst not only transformed chemical energy into electric energy but also converted HMF into value-added 2,5-furandicarboxylic (FDCA).

VELOCITY DISTRIBUTION EFFECTS IN AIR FILTER TESTING

2001 ◽  
Vol 19 (1) ◽  
pp. 1-21 ◽  
Author(s):  
FRANK CHAMBERS ◽  
ABDEL AL-SARKHI ◽  
SHENGHONG YAO
Keyword(s):  
Velocity Distribution ◽  
Air Filter

Forced Zero Cross-Loading Misspecifications in Measurement Component of Structural Equation Models

Methodology ◽  
2014 ◽  
Vol 10 (4) ◽  
pp. 138-152 ◽  
Author(s):  
Hsien-Yuan Hsu ◽  
Susan Troncoso Skidmore ◽  
Yan Li ◽  
Bruce Thompson
Keyword(s):  
Structural Equation ◽  
Structural Model ◽  
Structural Equation Models ◽  
Equation Model ◽  
Model Fit ◽  
Model Specification ◽  
Simulation Design ◽  
Measurement Models ◽  
Fit Statistics ◽  
Path Coefficients

The purpose of the present paper was to evaluate the effect of constraining near-zero parameter cross-loadings to zero in the measurement component of a structural equation model. A Monte Carlo 3 × 5 × 2 simulation design was conducted (i.e., sample sizes of 200, 600, and 1,000; parameter cross-loadings of 0.07, 0.10, 0.13, 0.16, and 0.19 misspecified to be zero; and parameter path coefficients in the structural model of either 0.50 or 0.70). Results indicated that factor pattern coefficients and factor covariances were overestimated in measurement models when near-zero parameter cross-loadings constrained to zero were higher than 0.13 in the population. Moreover, the path coefficients between factors were misestimated when the near-zero parameter cross-loadings constrained to zero were noteworthy. Our results add to the literature detailing the importance of testing individual model specification decisions, and not simply evaluating omnibus model fit statistics.

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