On the problem of the determination of gas pressure losses during the charging period in piston-type gas-expansion machines

1966 ◽  
Vol 2 (6) ◽  
pp. 370-374
Author(s):  
L. L. Shtein
Keyword(s):  
Gas Pressure ◽  
Pressure Losses ◽  
Gas Expansion

Volume Determination of Vacuum Vessels by Gas Expansion Method

MAPAN ◽  
2015 ◽  
Vol 30 (3) ◽  
pp. 175-178 ◽  
Author(s):  
Sefer Avdiaj ◽  
Janez Setina ◽  
Bojan Erjavec
Keyword(s):  
Expansion Method ◽  
Volume Determination ◽  
Gas Expansion

Bestimmung der Haftzugfestigkeit dichter Beschichtungen / Determination of bond strength of impermeable polymer coatings

1999 ◽  
Vol 5 (4) ◽  
pp. 387-398
Author(s):  
R.M. Frey ◽  
F.H. Wittmann
Keyword(s):  
Bond Strength ◽  
Polymer Coatings ◽  
Theoretical Background ◽  
Gas Pressure ◽  
Blister Formation ◽  
Controlled Conditions ◽  
Porous Substrates

Abstract In many cases there is a risk for the formation of blisters if impermeable polymer coatings are applied on porous substrates. On covers of courses in sport stadiums formation of blisters has been observed recently. In this contribution a method is described which can be used to investigate the causes of blister formation in a given system. Blisters are artificially created by the application of a gas pressure in the interface between coating and substrate. In this way the growth of blisters can be varied under controlled conditions. The theoretical background of this method is outlined. In this way it is possible to estimate the necessary pressure under the cover to create blisters of the observed size.

A method of rapid determination of gas pressure in a coal seam based on the advantages of gas spherical flow field

2017 ◽  
Vol 45 ◽  
pp. 502-510 ◽  
Author(s):  
Chaojie Wang ◽  
Shengqiang Yang ◽  
Chenglin Jiang ◽  
Dingding Yang ◽  
Chaojie Zhang ◽  
...  
Keyword(s):  
Flow Field ◽  
Coal Seam ◽  
Rapid Determination ◽  
Gas Pressure

scholarly journals Experimental Determination of the Resistivity Limits for Platinum and Iron Metal Gases Using an Exploding Wire

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 424 ◽  
Author(s):  
Luis Bilbao ◽  
Gonzalo Rodríguez Prieto
Keyword(s):  
Gas Phase ◽  
Measurement Method ◽  
Platinum Metal ◽  
Experimental Methods ◽  
Exploding Wire ◽  
Expansion Phase ◽  
Iron Metal ◽  
Gas Expansion ◽  
Solid Liquid

Transport properties of metals in solid, liquid, gas or plasma phases are an open area of research, both theoretically and experimentally. Concretely, there are no measurements available for the resistivity of gas phase of metals. In the latter case, the use of exploding wire systems allows one to reach states from solid to plasma that are not accessible with other experimental methods. In this work, following a measurement method previously used with copper, experimental resistivity limits of iron and platinum metal gases are presented based on measurements performed on the metal gas expansion phase.

Instrumental Determination of Molecular Weight by Gas Pressure.

1974 ◽  
Vol 46 (9) ◽  
pp. 1349-1351
Author(s):  
F. W. Karasek ◽  
R. J. Laub
Keyword(s):  
Molecular Weight ◽  
Gas Pressure

Determination of the optimum performance of gas turbines

2000 ◽  
Vol 214 (1) ◽  
pp. 243-255 ◽  
Author(s):  
J. H. Horlock ◽  
W. A. Woods
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Gas Turbines ◽  
Working Fluid ◽  
Optimum Conditions ◽  
Perfect Gas ◽  
Pressure Losses ◽  
Real Effects ◽  
Turbine Performance

Earlier analytical and graphical treatments of gas turbine performance, assuming the working fluid to be a perfect gas, are developed to allow for ‘non-perfect’ gas effects and pressure losses. The pressure ratios for maximum power and maximum thermal efficiency are determined analytically; the graphical presentations of performance based on the earlier approach are also modified. It is shown that the optimum conditions previously determined from the ‘air standard’ analyses may be changed quite substantially by the inclusion of the ‘real’ effects.

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