scholarly journals Thermodynamics of Insulated Pressure Vessels for Vehicular Hydrogen Storage

1998 ◽  
Vol 120 (2) ◽  
pp. 137-142 ◽  
Author(s):  
S. M. Aceves ◽  
G. D. Berry
Keyword(s):  
Low Temperature ◽  
Hydrogen Storage ◽  
Ambient Temperature ◽  
Low Pressure ◽  
Good Alternative ◽  
Pressure Vessels ◽  
Normal Operation ◽  
Light Duty ◽  
Light Duty Vehicles ◽  
Better Than

This paper studies the application of insulated pressure vessels for hydrogen-fueled light-duty vehicles. Insulated pressure vessels are cryogenic-capable pressure vessels that can be fueled with liquid hydrogen (LH2); low-temperature (46 K) compressed hydrogen (CH2); or ambient-temperature CH2. In this analysis, hydrogen temperatures, pressures, and venting losses are calculated for insulated pressure vessels fueled with LH2 or with low-temperature CH2, and the results are compared to those obtained in low-pressure LH2 tanks. Hydrogen losses are calculated as a function of daily driving distance during normal operation; as a function of time during long periods of vehicle inactivity; and as a function of initial vessel temperature during fueling. The results show that insulated pressure vessels have packaging characteristics comparable or better than those of conventional, low-pressure LH2 tanks, with greatly improved dormancy and much lower boil-off, and therefore appear to be a good alternative for vehicular hydrogen storage.

scholarly journals Evaluation of Insulated Pressure Vessels for Cryogenic Hydrogen Storage

1999 ◽  
Author(s):  
Salvador M. Aceves ◽  
J. Martinez-Frias ◽  
O. Garcia-Villazana
Keyword(s):  
High Pressure ◽  
Hydrogen Storage ◽  
Lower Energy ◽  
Energy Requirement ◽  
Liquid Hydrogen ◽  
Pressure Vessels ◽  
Operating Conditions ◽  
Light Duty ◽  
Low Weight ◽  
Light Duty Vehicles

Abstract This paper presents an analytical and experimental evaluation of the applicability of insulated pressure vessels for hydrogen-fueled light-duty vehicles. Insulated pressure vessels are cryogenic-capable pressure vessels that can be fueled with liquid hydrogen (LH2) or ambient-temperature compressed hydrogen (CH2). Insulated pressure vessels offer the advantages of liquid hydrogen tanks (low weight and volume), with reduced disadvantages (lower energy requirement for hydrogen liquefaction and reduced evaporative losses). The purpose of this work is to verify that commercially available aluminum-lined, fiber-wrapped vessels can be used for cryogenic hydrogen storage. The paper reports on previous and ongoing tests and analyses that have the purpose of improving the system design and assure its safety. The analytical and experimental results carried out until now indicate that it may be possible to use fiber-wrapped aluminum-lined vessels for operation at LH2 temperature and high pressure. Required future tests are described that will assure vessel safety under daily operating conditions.

Establishment of Typical Driving Patterns for Light-Duty Vehicles on Different Roads in Hsin-Chu Area of Taiwan

2011 ◽  
Vol 356-360 ◽  
pp. 1505-1509
Author(s):  
Mei Yin Hwa ◽  
Tai Yi Yu ◽  
Wen Chung Hsu ◽  
Chien An Chen
Keyword(s):  
Factor Analysis ◽  
Physical Interpretation ◽  
Euclidean Distance ◽  
Distance Method ◽  
Driving Patterns ◽  
Light Duty ◽  
Distance Methods ◽  
Light Duty Vehicles ◽  
The City ◽  
Better Than

This study utilized the car chasing method to chase 86 light-duty vehicles on seven major roads in the Shin-Chu area and establish the typical driving patterns for various roads. The 23 parameters that associated with the driving were considered to elucidate the features of driving patterns. This work examined two manners, corrected Euclidean distance and traditional Euclidean distance methods, to elucidate a representative driven cycle. In the screening procedure of the typical driven cycle, factor analysis was applied to correct Euclidean distance and examine the 23 variables of driving conditions. The results indicated that the first five of the 23 principal components explained at least 94% of the variance for seven roads. The physical interpretation based on factor analysis was better than the traditional Euclidean distance method, so the results of factor analysis were used to select the typical driven cycle. The average speeds were 34.1 kmh-1 for the city road; 36.8, 26.1 and 30.4 kmh-1 for county roads 118, 120 and 122; 38.7 and 36.5 kmh-1/ for provincial roads 1 and 3; 85.9 kmh-1 for freeway.

Effects of low temperature on the cold start gaseous emissions from light duty vehicles fuelled by ethanol-blended gasoline

2013 ◽  
Vol 102 ◽  
pp. 44-54 ◽  
Author(s):  
M. Clairotte ◽  
T.W. Adam ◽  
A.A. Zardini ◽  
U. Manfredi ◽  
G. Martini ◽  
...  
Keyword(s):  
Low Temperature ◽  
Cold Start ◽  
Gaseous Emissions ◽  
Light Duty ◽  
Light Duty Vehicles

Effect of Ambient Temperature and E-10 Fuel on Primary Exhaust Particulate Matter Emissions from Light-Duty Vehicles

1997 ◽  
Vol 31 (5) ◽  
pp. 1302-1307 ◽  
Author(s):  
Patricia A. Mulawa ◽  
Steven H. Cadle ◽  
Kenneth Knapp ◽  
Roy Zweidinger ◽  
Richard Snow ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Ambient Temperature ◽  
Light Duty ◽  
Particulate Matter Emissions ◽  
Light Duty Vehicles ◽  
Exhaust Particulate

Study on hydrogen storage mechanisms of mesoporous materials at low temperature and low pressure

2018 ◽  
Vol 214 ◽  
pp. 91-94 ◽  
Author(s):  
Yi Liu ◽  
Jinming Lu ◽  
Jianhua Yang ◽  
Yan Zhang ◽  
Jinqu Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Storage ◽  
Mesoporous Materials ◽  
Low Pressure

Field ion microscopy

1988 ◽  
Vol 46 ◽  
pp. 434-435
Author(s):  
Gert Ehrlich
Keyword(s):  
Low Temperature ◽  
Sample Surface ◽  
Low Pressure ◽  
Radius Of Curvature ◽  
Field Ion Microscopy ◽  
Phosphor Screen ◽  
Ion Microscopy ◽  
Field Ion Microscope

The field ion microscope, devised by Erwin Muller in the 1950's, was the first instrument to depict the structure of surfaces in atomic detail. An FIM image of a (111) plane of tungsten (Fig.l) is typical of what can be done by this microscope: for this small plane, every atom, at a separation of 4.48Å from its neighbors in the plane, is revealed. The image of the plane is highly enlarged, as it is projected on a phosphor screen with a radius of curvature more than a million times that of the sample. Müller achieved the resolution necessary to reveal individual atoms by imaging with ions, accommodated to the object at a low temperature. The ions are created at the sample surface by ionization of an inert image gas (usually helium), present at a low pressure (< 1 mTorr). at fields on the order of 4V/Å.

CHEMISORPTION OF CO AND METHANATION ON Rh SURFACES AT LOW TEMPERATURE AND LOW PRESSURE, AN ATOM-PROBE FIM STUDY

1987 ◽  
Vol 48 (C6) ◽  
pp. C6-487-C6-492
Author(s):  
W. Liu ◽  
D. M. Ren ◽  
C. L. Bao ◽  
T. T. Tsong
Keyword(s):  
Low Temperature ◽  
Atom Probe ◽  
Low Pressure
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