Prediction of deformation and hygro-thermal stresses distribution in PEM fuel cell vehicle using threedimensional CFD model

. fluid dynamics model of a PEM fuel cell has been developed to simulate the stresses inside the PEM fuel cell, which are occurring during fuel cell assembly. hygro and thermal stresses into non-isothermal three- dimensional CFD model of PEM fuel cell to simulate the hygro and thermal stresses in one part of the fuel

Ngày tải lên: 05/09/2013, 14:58

. Micro -PEM fuel cell, Mobile phone. 1. Introduction Fuel cells are growing in importance as sources of sustainable energy and will doubtless form part of the. power density and the corresponding current density increase with decreasing height of the fuel cell, decreasing ambient temperature and increasing ambient

Ngày tải lên: 05/09/2013, 14:58

. fuel cell systems. The stresses distribution in the fuel cells is affected by operating point (cell voltage and related current density). The stresses distribution. occurrence of cracks and pinholes in the fuel cells components under steady–state loading during regular cell operation, especially in the high loading conditions.

Ngày tải lên: 05/09/2013, 14:58

. domain of a planar ambient air-breathing PEM fuel cell and (b) longitudinal cross section of 3 -cell fuel cell stack International Journal of Energy and. membranes used in fuel cells is a major factor in the operating lifetime of fuel cell systems. The stresses distribution in the air-breathing fuel cells is affected

Ngày tải lên: 05/09/2013, 14:58

... generating variability have gained greater importance in breeding of crop plants including soybean and may serve as supplements to conventional breeding methods. In this context, mutation breeding ... (albina) and B (chlorina) in cultivar DT12; C (albina) in cultivar DVN6 Aa B Fig. 2. Changes in lea ves: A. petafoliate in ĐT12; B. tetra foliate in ĐT20 A B Fig. 3. Changes...

Ngày tải lên: 29/08/2013, 08:14

. temperature in the cell. The main mechanisms driving the cell performances were thus pointed out. Using models, the main influences of the operating parameters. Schematic of mass transfer phenomena in PEM fuel cells The main assumptions considered in the model are as follows [19]: • The model is a pseudo 2D model. The model

Ngày tải lên: 05/09/2013, 14:58

. transfer; CFD. 1. Introduction Modelling and simulation play significant roles in fully characterizing a PEM fuel cell. Changes in operating conditions and physical. CFD modeling and simulation for heat and mass transport in PEM fuel cells are being used extensively in researches and industrial applications to gain better

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 25/10/2013, 08:20

... must satisfy special crewing and training requirements for navigating in ice. 56 For the USA, requirements as to manning, training, qualifications and watchkeeping standards for foreign tankers ... within the inland waters, territorial sea or EEZ adjoining the USSR northern coast and that it includes seaways suitable for guiding vessels in ice. Due to the vagueness concerning leading...

Ngày tải lên: 01/11/2013, 09:20

... Van Lam in An Investigation into the English Words and Idioms Denoting Happiness (2002) presents some interesting findings on teaching and learning vocabulary in terms of the meaning of new ... English and Vietnamese words and idioms including words and idioms expressing unhappiness in English and Vietnamese, and reduce the risk of committing errors when using...

Ngày tải lên: 26/11/2013, 13:29