Design and Analytical and Numerical Calculation of Pressure Vessel for Hydrogen Gas

2014 ◽  
Vol 521 ◽  
pp. 595-604 ◽  
Author(s):  
Miroslav Badida ◽  
Marián Hurajt ◽  
Tomáš Jezný ◽  
Radoslav Rusnák
Keyword(s):  
High Pressure ◽  
Numerical Calculation ◽  
Pressure Vessel ◽  
Hydrogen Pressure ◽  
Hydrogen Gas

The article deals with of a hydrogen pressure vessel suitable for high pressure of approximately 75MPa. One of the goals is to design a vessel from materials whose strength will meet mechanical requirements a calculated in both analytical and numerical ways. Another objective is the simulation of the design the pressure vessel with regard to safety and weight requirements.

High-Pressure Design of Composite Vessel for Hydrogen Gas

2014 ◽  
Vol 672-674 ◽  
pp. 619-623
Author(s):  
Miroslav Badida ◽  
Marián Hurajt
Keyword(s):  
High Pressure ◽  
Pressure Vessel ◽  
Hydrogen Pressure ◽  
Hydrogen Gas ◽  
Composite Vessel ◽  
Very High

The article deals with of a hydrogen pressure vessel suitable for very high pressure of approximately 100 MPa. One of the goals is to design a vessel from materials whose strength will meet mechanical requirements a calculated in numerical ways. Another objective is the simulation of the design the pressure vessel with regard to safety and weight requirements.

Development of New Material Testing Apparatus in High-Pressure Hydrogen and Evaluation of Hydrogen Gas Embrittlement of Metals

2007 ◽  
Author(s):  
Seiji Fukuyama ◽  
Masaaki Imade ◽  
Kiyoshi Yokogawa
Keyword(s):  
High Pressure ◽  
Stainless Steels ◽  
Pressure Vessel ◽  
Austenitic Stainless Steels ◽  
Material Testing ◽  
Hydrogen Gas ◽  
Stage Ii ◽  
Fuel Cell Vehicle ◽  
Stage Iii ◽  
Pressure Hydrogen

A new type of apparatus for material testing in high-pressure gas of up to 100 MPa was developed. The apparatus consists of a pressure vessel and a high-pressure control system that applies the controlled pressure to the pressure vessel. A piston is installed inside a cylinder in the pressure vessel, and a specimen is connected to the lower part of the piston. The load is caused by the pressure difference between the upper room and the lower room separated by the piston, which can be controlled to a loading mode by the pressure valves of the high-pressure system supplying gas to the vessel. Hydrogen gas embrittlement (HGE) and internal reversible hydrogen embrittlement (IRHE) of austenitic stainless steels and iron- and nickel-based superalloys used for high-pressure hydrogen storage of fuel cell vehicle were evaluated by conducting tensile tests in 70 MPa hydrogen. Although the HGE of these metals depended on modified Ni equivalent, the IRHE did not. The HGE of austenitic stainless steels was larger than their IRHE; however, the HGE of superalloys was not always larger than their IRHE. The effects of the chemical composition and metallic structure of these materials on the HGE and IRHE were discussed. The HGE of austenitic stainless steels was examined in 105 MPa hydrogen. The following were identified; SUS304: HGE in stage II, solution-annealed SUS316: HGE in stage III, sensitized SUS316: HGE in stage II, SUS316L: HGE in FS, SUS316LN: HGE in stage III and SUS310S: no HGE.

Hydrogen Content and Microvoid Hydrogen Pressure in Steel Wall of Spherical High Pressure Vessel

2011 ◽  
Vol 233-235 ◽  
pp. 2805-2807
Author(s):  
Yuan Dong Liu ◽  
Yi Hui Yin ◽  
Yun Tan
Keyword(s):  
High Pressure ◽  
Hydrogen Embrittlement ◽  
Hydrogen Content ◽  
Pressure Vessel ◽  
Hydrogen Pressure ◽  
Hydrogen Diffusion ◽  
Wall Material ◽  
High Pressure Vessel ◽  
Specific Elongation ◽  
Spherical Pressure

Hydrogen in the steel wall can cause hydrogen embrittlement of the wall material and thereby change the carrying capacity of the vessel. A theoretical model of hydrogen diffusion in the steel wall of a high pressure vessel was established and the formula of hydrogen content in the steel wall was deduced. Based on the hydrogen content formula, the formula of hydrogen pressure within microvoids which naturally exist in the steel wall of a spherical pressure vessel was deduced. At last, as an example to demonstrate the meaning of solving hydrogen pressure in microvoids, by using a representative volume element (RVE) model to carry out FE numerical simulation, the effects of hydrogen pressure on equivalent mechanical properties of the wall material were studied. It is found that the higher the gas pressures are, the lower the ultimate strength, specific elongation and percentage contraction of area are, which is in good accordance with the phenomena of metal hydrogen embrittlement.

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