2 edition of Depressurization and two-phase flow of water containing high levels of dissolved nitrogen gas found in the catalog.
Depressurization and two-phase flow of water containing high levels of dissolved nitrogen gas
Robert J Simoneau
by National Aeronautics and Space Administration, Scientific and Technical Information Branch, Forsale by the National Technical Information Service] in Washington, D.C, [Springfield, Va
Written in English
|Series||NASA technical paper -- 1839|
|Contributions||United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Lewis Research Center|
|The Physical Object|
|Pagination||43 p. :|
|Number of Pages||43|
3-phase flow (Gas-Liquid-Liquid with Oil as continuous phase): A typical example would be crude oil from reservoirs with associated gas (dissolved or free) and free water. Low flowing velocities will cause similar problems as discussed above related to corrosion. Major constituents of soil gas include nitrogen, water vapor, carbon dioxide, and (near the surface) oxygen. Since radium- is essentially always present in the soil or rock, trace levels of radon will exist in the soil gas.
The injection device uses an educator or an exhauster (Fig. ) as a gas aspiration nozzle to draw air into recycled treated wastewater, truly developing a two-phase mixture of air and water that is subsequently discharged into the flotation vessel. Determine the heat transfer for the process, in k]. A rigid, well—insulated tank contains a two—phase mixture consisting of ft3 of saturated liquid water and ft3 of saturated water vapor, initially at lbf/in.2 A paddle wheel stirs the mixture until only saturated vapor at a higher pressure remains in the tank.
EPA/// Feb. REMEDIAL ACTION, TREATMENT, AND DISPOSAL OF HAZARDOUS WASTE Proceedings of the Fifteenth Annual Research Symposium Cincinnati, OH, April , Sponsored by the U.S. EPA, Office of Research & Development Risk Reduction Engineering Laboratory Cincinnati, OH Coordinated by: JACA Corp. Fort Washington, PA and PEI . For multiphase (combination of gas, oil and water) flows, the high cost of multiphase flow meters often lead to the use of software flow rate estimators that use well test data to calculate the.
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Depressurization and Two-Phase Flow of Water Containing High Levels of Dissolved Nitrogen Gas Robert J. Simoneau Lewis Research Center Cleveland, Ohio National Aeronautics and Space Administration Scientific and Technical Information Branch Depressurization and two-phase flow of water containing high levels of dissolved nitrogen gas.
Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch; [Springfield, Va.: Forsale by the National Technical Information Service], Study of release of nitrogen gas dissolved in water during depressurisation - Application to primary circuit of PWR Article in Nuclear Engineering and Design (3) October with The flow rates of water and air are controlled separately through control valves and are measured individually before mixing.
An electromagnetic flow meter (Model: Endress + Hauser Promag 30), which has an accuracy of % R.D, is used to measure the water volume flow rate; whereas, two rotameters (Model: RGC and RGC from Yokogawa) are employed to measure the air flow with a Cited by: 6.
Abstract. Soft drinks and champagne are examples of liquids containing sizable quantities of gases dissolved under pressure. In liquids usually used in technology there are dissolved inert gases and also is known that at p = 10 5 Pa, T 2o = K the amount of dissolved gases and micro-bubbles in the coolant is α 1o ≅for boiling water nuclear reactors, and α 1o Author: Nikolay Ivanov Kolev.
In a nonflow depressurization experiment, water with very high nitrogen content was depressurized at rates from to MPa per second and a metastable behavior which was a strong function of. The dynamic coefficient K Dyn, used in Eq. (8), can be obtained, if the equations of momentum conservation of gaseous and liquid phase are compared and terms of lower order are neglected.
The ratio of the so reached expression differs from Eq.(5) by a constant factor. This coefficient is expressed by Eq.(11) and might be understood as the ratio between the reaction on a defined force by an Cited by: Simoneau RJ () Depressurization and two-phase flow of water containing high levels of dissolved nitrogen gas, NASA Technical PaperUSA Google Scholar Skripov WP, Sinizyn EN, Pavlov PA, Ermakov GW, Muratov GN, Bulanov NB, Bajdakov WG () Thermophysical properties of liquids in meta-stable state, Moscu, Atomisdat, in Russia Google Author: Nikolay Ivanov Kolev.
Furthermore, such models must be able to handle two-phase flow, both for depressurization and normal operation . Fracture propagation control involves a coupled fluid-structure problem.
In order to provide improved predictions for CO 2 mixtures and high-toughness steel types, coupled fluid-structure models are under development [6–11]. Depressurization and two-phase flow of water containing high levels of dissolved nitrogen gas.
(Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch; [Springfield, Va.: Forsale by the National Technical Information Service], ), by Robert J.
Simoneau, Lewis Research Center, and. Class 1 hydrate deposits are characterized by a hydrate-bearing layer underlain by a two-phase zone involving mobile gas.
Two kinds of deposits are investigated. The first involves water and hydrate in the hydrate zone (Class 1W), while the second involves gas and hydrate (Class 1G). Figure 2: evolution of gas saturation: accuracy ±3% (fully oil saturated) Gas saturation profiles are radically different for the second drawdown scheme (ε=6 bars).
As expected, the general extension of the two-phase area is smaller since the injection rate is the same but ε is lower. For the shorter times, evolution is identical.
The model includes the equations for gas-water two-phase flow, conductive and convective heat transfer, and intrinsic kinetics of hydrate decomposition. The simulator is used to model a hydrate reservoir where the hydrate- bearing layer overlies a free gas zone, such as those discovered in the arctic.
Two-Phase Tests The experimental setup used in the two-phase tests was very similar to the single phase tests.
Additional cells fabricated from clear arcylic blocks and tubing measuring 10 cm high x 5 cm diameter, and 5 cm x 5 cm were used for the two-phase tests. A square test cell 5 cm high with a cm.
A nuclear meltdown (core meltdown, core melt accident, meltdown or partial core melt) is a severe nuclear reactor accident that results in core damage from overheating.
The term nuclear meltdown is not officially defined by the International Atomic Energy Agency or by the Nuclear Regulatory Commission. It has been defined to mean the accidental melting of the core of a nuclear reactor, however. The produced water in many oil and gas wells has high total dissolved solids (TDS) content (often TDS>10wt%).
For example, water analysis from a Texas gas well showed TDS content of about 23wt% [Fang et al, ]. At such high concentrations, theories. Environmental Science & Engineering Magazine’s October issue.
Featuring a special focus on Water and Wastewater Plant Efficiency. Article topics include: inflow and infiltration, pathogens. An important topic in fluid dynamics is multiphase flows.
Multiphase flows can be found in numerous fields in engineering, e.g. aerospace, biomedical, chemical, electrical, environmental, mechanical, materials, nuclear and naval engineering. There is an enormous variation in applications, e.g. rocket engines, chemical reactors, contamination spreading, multiphase mixture transport, cavitation.
Two-Phase Flow, Boiling, and Condensation S. Mostafa Ghiaasiaan Providing a comprehensive introduction to the fundamentals and applications of flow and heat transfer in conventional and miniature systems, this fully enhanced and updated edition covers all the topics essential for graduate courses on two-phase flow, boiling, and condensation.
For gas gathering systems, it is common to meter the individual gathering lines into the manifold as shown on the illustration. For multiphase (combination of gas, oil and water) flows, the high cost of multiphase flow meters often lead to the use of software flow rate estimators that use well test data to calculate the actual flow.
11 (combination of gas, oil and water) flows, the high cost of multiphase flow meters often leads to the use of software flow rate estimators that use well test data to calculate the actual flow. Offshore, the dry completion wells on the main field centre feed directly into production manifolds, while outlying wellhead towers and subsea.Many submarine slope failures in hydrate-bearing sedimentary deposits might be directly triggered, or at least primed, by gas hydrate dissociation.
It has been reported that during the past 55 years (–) the 0– m layer of oceans worldwide has been warmed by °C because of global warming. This raises the following scientific concern: if warming of the bottom water of deep Cited by: Spent nuclear fuel and high-level radioactive waste can be disposed in deep horizontal drillholes in sedimentary, metamorphic or igneous rocks.
Horizontal drillhole disposal has safety, operational and economic benefits: the repository is deep in the brine-saturated zone far below aquifers in a reducing environment of formations that can be shown to have been isolated from the surface for Cited by: 1.