Improved calibration of the SrB4O7:Sm2+ optical pressure gauge: Advantages at very high pressures and high temperatures

1997 ◽  
Vol 81 (8) ◽  
pp. 3333-3339 ◽  
Author(s):  
F. Datchi ◽  
R. LeToullec ◽  
P. Loubeyre
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Pressure Gauge ◽  
Optical Pressure ◽  
Very High

scholarly journals Gaseous combustion at high pressures. —Part X. The co-volume corrections, maximum temperatures and dissociation of steam and carbon dioxide in explosions

1928 ◽  
Vol 119 (782) ◽  
pp. 464-480
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Internal Energy ◽  
High Temperatures ◽  
High Pressures ◽  
Internal Combustion ◽  
Systematic Survey ◽  
Explosion Method ◽  
Maximum Temperatures ◽  
Very High

During the researches upon high-pressure explosions of carbonic oxide-air, hydrogen-air, etc., mixtures, which have been described in the previous papers of this series, a mass of data has been accumulated relating to the influence of density and temperature upon the internal energy of gases and the dissociation of steam and carbon dioxide. Some time ago, at Prof. Bone’s request, the author undertook a systematic survey of the data in question, and the present paper summarises some of the principal results thereof, which it is hoped will throw light upon problems interesting alike to chemists, physicists and internal-combustion engineers. The explosion method affords the only means known at present of determining the internal energies of gases at very high temperatures, and it has been used for this purpose for upwards of 50 years. Although by no means without difficulties, arising from uncertainties of some of the assumptions upon which it is based, yet, for want of a better, its results have been generally accepted as being at least provisionally valuable. Amongst the more recent investigations which have attracted attention in this connection should be mentioned those of Pier, Bjerrum, Siegel and Fenning, all of whom worked at low or medium pressures.

The application of small porous particles, high temperatures, and high pressures to generate very high resolution LC and LC/MS separations

2007 ◽  
Vol 30 (8) ◽  
pp. 1158-1166 ◽  
Author(s):  
Robert Plumb ◽  
Jeff R. Mazzeo ◽  
Eric S. Grumbach ◽  
Paul Rainville ◽  
Michael Jones ◽  
...  
Keyword(s):  
High Resolution ◽  
High Temperatures ◽  
High Pressures ◽  
Porous Particles ◽  
Very High

Research at very high pressures and high temperatures

1977 ◽  
Vol 15 (8) ◽  
pp. 461-470 ◽  
Author(s):  
Francis P. Bundy
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Very High

scholarly journals On the application of liquids formed by the condensation of gases as mechanical agents

1833 ◽  
Vol 2 ◽  
pp. 193-193
Keyword(s):  
Latent Heat ◽  
High Temperatures ◽  
High Pressures ◽  
Elastic Force ◽  
Muriatic Acid ◽  
Different Temperatures ◽  
Great Pressure ◽  
Very High ◽  
Sulphuretted Hydrogen

The elasticity of vapours, in contact with the liquids from which they are produced under high pressures in high temperatures, is known to increase in a higher ratio than the arithmetical one of the temperature; but the exact law is not determined, and the loss of latent heat in compression, and the re-absorption in expansion, renders the advantage of steam under great pressure and at very high temperatures doubtful in an economical view. No such doubt, however, exists in regard to those fluids which require very great compression for their existence, and where common temperatures are sufficient to produce an immense elastic force. Thus sulphuretted hydrogen, which condenses into a liquid under a pressure of 14 atmospheres at 3°, had its elastic force increased so as to equal a pressure of 17 atmospheres by raising its temperature to 47°. Liquid muriatic acid at 3° exerted an elastic force equal to the pressure of 20 atmospheres, at 25° = 25 atmospheres, and at 51° = 45 atmospheres. After some experimental illustrations of the expansibility of the vapour of sulphuret of carbon at different temperatures, the author adverts to the possible application of the difficultly compressible gases, as mechanical agents, and to their power of producing cold by the rapidity of their evaporation.

scholarly journals II. On the lowering of the freezing-point of water by pres­sure

1880 ◽  
Vol 30 (200-205) ◽  
pp. 533-538 ◽  
Keyword(s):  
Thermal Effects ◽  
High Pressures ◽  
Freezing Point ◽  
Pressure Gauge ◽  
Quantitative Character ◽  
Gutta Percha ◽  
Iron Copper ◽  
William Thomson ◽  
Theoretical Discovery ◽  
Very High

The Cailletet pump may be conveniently employed to observe the thermal effects of compression on solid and fluid substances. Before engaging in an investigation on this subject, it was necessary to test the apparatus, and especially the manometer. For this purpose it seemed, on theoretical grounds, that observations on the lowering of the freezing-point of water by pressure would be a severe test of the accuracy of the pressure gauge, and the constancy of the records of the thermo-junctions under pressure. I am not aware of any quantitative experiments on this subject having been made under high pressures. Sir William Thomson carried the proof of the accuracy of Professor James Thomson’s great theoretical discovery to a pressure of 17 atmospheres. The experiments of Mousson (“ Pogg. Annalen,” 1858) were not of a quantitative character, being merely intended to show that ice at a temperature of —18° C. might still be liquefied by the application of an enormous pressure. The following experiments appear to show that a convenient manometer for very high pressures, based on the observation of the freezing-point, may be easily constructed. In all the following experiments the galvanometer, moving to the negative side, represents a cooling effect on the junction inside the bottle. One division on the arbitrary scale represented about of a degree C. Two thermo-junctions, made of iron-copper wires, insulated by a covering of marine glue, the junctions themselves being covered with a thin layer of gutta-percha dissolved in benzol, were employed in the experiments.

Steam Piping for High Pressures and High Temperatures

1951 ◽  
Vol 164 (1) ◽  
pp. 324-350 ◽  
Author(s):  
R. W. Bailey
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Austenitic Steels ◽  
Operating Pressure ◽  
Working Stress ◽  
Economical Design ◽  
Pipe Line ◽  
Distribution Of Stress ◽  
Very High

Consideration of the following matters is made important by recent progress to high operating steam pressures and temperatures: the changing and more favourable distribution of stress in a pipe, the accompanying creep, and their application to the rational and economical design of steam piping; the determination of permissible working stress; differences in American and British procedures and consequent differences in stress magnitudes; the influence of operating fluctuations of pressure and temperature and the choice of a design temperature at rated pressure to provide for them; tentative considerations of behaviour of ferritic and austenitic steels; the action of creep at operating pressure and temperature in reducing and removing the initial thermal expansion loading of a pipe-line, and in imposing it fully when cold. In these connexions some consideration should be paid to bolted, or otherwise removable, joints at terminal or other special positions; the problem of making a joint between ferritic and austenitic steel piping and components; the factors of materials and corrosion; promised adequacy of existing ferritic steels for present requirements, and application of the principles operative at very high temperatures to piping for less advanced conditions, and economy arising therefrom.

Beyond Ni-based superalloys: Development of CoRe-based alloys for gas turbine applications at very high temperatures

2011 ◽  
Vol 102 (9) ◽  
pp. 1125-1132 ◽  
Author(s):  
Debashis Mukherji ◽  
Joachim Rösler ◽  
Pavel Strunz ◽  
Ralph Gilles ◽  
Gerhard Schumacher ◽  
...  
Keyword(s):  
Gas Turbine ◽  
High Temperatures ◽  
Very High
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