scholarly journals Thermodynamic modeling of water vapor influence on development process of the lower-Karmalinsky bituminous deposit by the sagd method

2019 ◽  
Vol 98 ◽  
pp. 03004
Author(s):  
Eduard Korolev ◽  
Anatoly Bakhtin ◽  
Aleksey Eskin ◽  
Enza Barieva ◽  
Rezeda Gabdelvalieva ◽  
...  
Keyword(s):  
Water Vapor ◽  
Thermodynamic Modeling ◽  
Anthropogenic Impact ◽  
Superheated Steam ◽  
Development Process ◽  
Calcite Cement

The development of the Lower-Karmalinsky bituminous deposit is currently made by the SAGD method. However, focusing on the reduction of bitumen viscosity, the problem of mineral phase’s transformation at the reservoir due to anthropogenic impact overlooked. In this work, using thermodynamic modeling, shown that the injection of superheated steam into bitumen-saturated sandstone layer will lead to the dissolution of calcite cement.

scholarly journals BEHAVIOR OF CARBON AND URANIUM AT RADIOACTIVE GRAPHITE HEATING IN WATER VAPOR. THERMODYNAMIC MODELING

2018 ◽  
Vol 59 (9) ◽  
pp. 16 ◽  
Author(s):  
Nikolaiy M. Barbin ◽  
Anton M. Kobelev ◽  
Dmiriy I. Terent’ev ◽  
Sergeiy G. Alexeev
Keyword(s):  
Water Vapor ◽  
High Temperature ◽  
Thermodynamic Modeling ◽  
Radioactive Carbon ◽  
Radioactive Graphite

The behavior of radioactive graphite was studied by the method of thermodynamic modeling at high temperature in water vapor. The distribution of radioactive carbon and uranium on phase states is given.

scholarly journals Analysis of the adiabatic process by using the thermodynamic property diagram of water vapor

2021 ◽  
Vol 252 ◽  
pp. 03055
Author(s):  
Wang Yarong ◽  
Wang Peirong
Keyword(s):  
Water Vapor ◽  
Superheated Steam ◽  
Saturated Vapor ◽  
Adiabatic Process ◽  
Energy Transformation ◽  
Thermodynamic Process ◽  
Expansion Process ◽  
Steam Power ◽  
First Law Of Thermodynamics ◽  
Working Medium

In the steam power plant, the working medium used for energy transformation is water vapor. The thermodynamic properties of water vapor are usually obtained by using water vapor tables and charts. Adiabatic process of water vapor is widespread in engineering applications. The adiabatic process is realized without heat addition or rejection and the entropy of the working medium during a reversible adiabatic process remains constant. During an adiabatic expansion process, superheated steam turns into saturated vapor , and further into wet vapor, the pressure and the temperature of the steam decreases. The entropy during a irreversible adiabatic process increases. In general, when analyzing the thermodynamic process of water vapor, we first determine the state parameters by using charts and tables, and then make relevant calculations according to the first law of thermodynamics.

Design of Cast Heat Resistant Alloys With Improved Creep Strength

2007 ◽  
Author(s):  
R. I. Pankiw ◽  
D. P. Voke
Keyword(s):  
Mechanical Property ◽  
Thermodynamic Modeling ◽  
Creep Strength ◽  
Petrochemical Industry ◽  
Development Process ◽  
Microstructural Characterization ◽  
Alloying Elements ◽  
Detailed Understanding ◽  
Heat Resistant

Cast heat resistant alloys are used in the petrochemical industry for reformer furnace tubes and ethylene pyrolisis coils. These alloys have traditionally been developed through the casting of trial compositions with differing additions of alloying elements followed by long term (10,000 hour) stress to rupture testing. It is now possible to shorten the development process through the use of computational thermodynamics and a detailed understanding of composition, microstructure and property relationships. This paper will provide examples of how alloys can be developed through a combination of thermodynamic modeling, microstructural characterization, and mechanical property measurements.

Thermodynamic modeling of dearsenation of rebellious gold–quartz–arsenic ore in water vapor

2016 ◽  
Vol 52 (2) ◽  
pp. 373-377
Author(s):  
P. L. Paleev ◽  
P. A. Gulyashinov ◽  
A. N. Gulyashinov
Keyword(s):  
Water Vapor ◽  
Thermodynamic Modeling

scholarly journals A thermodynamic modeling of 2-bed adsorption desalination to promote main equipment performance

2021 ◽  
Author(s):  
Amirhossein Amirfakhraei ◽  
Jamshid Khorshidi ◽  
Taleb Zarei
Keyword(s):  
Water Vapor ◽  
Thermodynamic Modeling ◽  
Heat Recovery ◽  
Time History ◽  
Water Vapor Adsorption ◽  
Operating Conditions ◽  
Water Production ◽  
Daily Water ◽  
Modeling Of Adsorption ◽  
The Mathematical Model

Abstract Adsorption desalination utilizes the discrete adsorption of the water vapor from the evaporator, and is capable of being discharged to the condenser. This study illuminated an advanced cycle of mass and heat recovery among beds, condensers, and evaporators. Morover, the thermodynamic modeling of Adsorption Desalination Systems (ADS) under different operating conditions was investigated. Furthermore, its effect on the evaporator vapor production and the water vapor adsorption and desorption in the adsorption beds were accounted for. Parenthetically, the mathematical model of ADS thermodynamics was validated with the experimental data. Besides, the advanced ADS modeling was conducted via mass and heat recovery among beds, condensers, and evaporators. In addition to the amount of the desalinated water, the time history chart of the equipment applied in the process with and without the thermal and mass recovery is also illustrated. Finally, under such operating conditions, the SDWP (Specific Daily Water Production) advanced ADS is 153% higher than conventional ADS.

New Design for a Differentially Pumped Hydration Chamber for a Siemens IA

1971 ◽  
Vol 29 ◽  
pp. 44-45
Author(s):  
R. C. Moretz ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscopy ◽  
Water Vapor ◽  
Electron Diffraction ◽  
Water Vapor Pressure ◽  
Biological Materials ◽  
Thin Membrane ◽  
Reliable System ◽  
System A ◽  
Water Films ◽  
Aperture Opening

Electron microscopy and diffraction of biological materials in the hydrated state requires the construction of a chamber in which the water vapor pressure can be maintained at saturation for a given specimen temperature, while minimally affecting the normal vacuum of the remainder of the microscope column. Initial studies with chambers closed by thin membrane windows showed that at the film thicknesses required for electron diffraction at 100 KV the window failure rate was too high to give a reliable system. A single stage, differentially pumped specimen hydration chamber was constructed, consisting of two apertures (70-100μ), which eliminated the necessity of thin membrane windows. This system was used to obtain electron diffraction and electron microscopy of water droplets and thin water films. However, a period of dehydration occurred during initial pumping of the microscope column. Although rehydration occurred within five minutes, biological materials were irreversibly damaged. Another limitation of this system was that the specimen grid was clamped between the apertures, thus limiting the yield of view to the aperture opening.

Hydration Chamber for Jeolco 200 Kv Microscope

1970 ◽  
Vol 28 ◽  
pp. 542-543
Author(s):  
V. R. Matricardi ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Electron Microscope ◽  
Water Vapor ◽  
Vapor Pressure ◽  
Pressure Gradient ◽  
Room Temperature ◽  
List Type ◽  
Type Number ◽  
Equilibrium Vapor Pressure

In order to observe room temperature hydrated specimens in an electron microscope, the following conditions should be satisfied: The specimen should be surrounded by water vapor as close as possible to the equilibrium vapor pressure corresponding to the temperature of the specimen.The specimen grid should be inserted, focused and photo graphed in the shortest possible time in order to minimize dehydration.The full area of the specimen grid should be visible in order to minimize the number of changes of specimen required.There should be no pressure gradient across the grid so that specimens can be straddled across holes.Leakage of water vapor to the column should be minimized.

Warm and freeze-fracture of cotton seed radicles

1987 ◽  
Vol 45 ◽  
pp. 984-985
Author(s):  
E. L. Vigil ◽  
E. F. Erbe
Keyword(s):  
Thin Film ◽  
Water Vapor ◽  
Fracture Surface ◽  
Membrane Structure ◽  
Room Temperature ◽  
Freeze Fracture ◽  
Longitudinal Axis ◽  
Fracture Plane ◽  
Cotton Seeds ◽  
Condensed Water

In cotton seeds the radicle has 12% moisture content which makes it possible to prepare freeze-fracture replicas without fixation or cryoprotection. For this study we have examined replicas of unfixed radicle tissue fractured at room temperature to obtain data on organelle and membrane structure.Excised radicles from seeds of cotton (Gossyplum hirsutum L. M-8) were fractured at room temperature along the longitudinal axis. The fracture was initiated by spliting the basal end of the excised radicle with a razor. This procedure produced a fracture through the tissue along an unknown fracture plane. The warm fractured radicle halves were placed on a thin film of 100% glycerol on a flat brass cap with fracture surface up. The cap was rapidly plunged into liquid nitrogen and transferred to a freeze- etch unit. The sample was etched for 3 min at -95°C to remove any condensed water vapor and then cooled to -150°C for platinum/carbon evaporation.

Identity development process and content: Toward an integrated and contextualized science of identity.

2017 ◽  
Vol 53 (11) ◽  
pp. 2009-2010 ◽  
Author(s):  
Renee V. Galliher ◽  
Deborah Rivas-Drake ◽  
Eric F. Dubow
Keyword(s):  
Identity Development ◽  
Development Process
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