Numerical and Experimental Studies on Liquid Injection PDF Download
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Author: Charbel Boutros
Publisher:
ISBN:
Category :
Languages : en
Pages : 164
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Book Description
Author: Charbel Boutros
Publisher:
ISBN:
Category :
Languages : en
Pages : 164
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Book Description
Author: Wen-Bin Young
Publisher:
ISBN:
Category :
Languages : en
Pages : 318
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
We analyze the injection of liquid into a depleted geothermal reservoir using numerical, analytical and experimental techniques. We first investigate the injection of liquid at the base of a uniformly heated reservoir and show how an ascending liquid layer develops. Ahead of the liquid-vapor interface the temperature rises sharply and, for cases in which the permeability is sufficiently high, the vapor is approximately isobaric. The region immediately behind the advancing liquid-vapor interface is approximately isothermal and therefore, the fraction vaporizing is dependent on the reservoir superheat. When the reservoir is overlain by a supercooled zone, some of the vapor produced at the ascending liquid-vapor interface condenses. As a result, the amount of newly formed vapor available for subsequent extraction can be significantly reduced.
Author: Nikolay N. Simakov
Publisher: Springer
ISBN: 3030124460
Category : Technology & Engineering
Languages : en
Pages : 194
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Book Description
This book advances a new view of phenomena associated with the spray of liquids from a nozzle in a gas. New results of experimental studies and numerical simulation of the hydrodynamics of an emerging two-phase flow and accompanying interphase heat and mass transfer therein are presented. The book is ideal for specialists who develop and use technologies involving the spraying of liquids in a gas, such as burning and pyrolysis of liquid hydrocarbons, granulation and drying of polymers, and dust and gas scrubbing.
Author: Songbai Cheng
Publisher: Frontiers Media SA
ISBN: 2832516769
Category : Technology & Engineering
Languages : en
Pages : 244
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Book Description
Author: Ennio Macchi
Publisher: Woodhead Publishing
ISBN: 0081005113
Category : Technology & Engineering
Languages : en
Pages : 700
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Book Description
Organic Rankine Cycle (ORC) Power Systems: Technologies and Applications provides a systematic and detailed description of organic Rankine cycle technologies and the way they are increasingly of interest for cost-effective sustainable energy generation. Popular applications include cogeneration from biomass and electricity generation from geothermal reservoirs and concentrating solar power installations, as well as waste heat recovery from gas turbines, internal combustion engines and medium- and low-temperature industrial processes. With hundreds of ORC power systems already in operation and the market growing at a fast pace, this is an active and engaging area of scientific research and technical development. The book is structured in three main parts: (i) Introduction to ORC Power Systems, Design and Optimization, (ii) ORC Plant Components, and (iii) Fields of Application. - Provides a thorough introduction to ORC power systems - Contains detailed chapters on ORC plant components - Includes a section focusing on ORC design and optimization - Reviews key applications of ORC technologies, including cogeneration from biomass, electricity generation from geothermal reservoirs and concentrating solar power installations, waste heat recovery from gas turbines, internal combustion engines and medium- and low-temperature industrial processes - Various chapters are authored by well-known specialists from Academia and ORC manufacturers
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author: Brett Joseph Bornhoft
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Book Description
Author: Alireza Mashayek
Publisher:
ISBN: 9780494212806
Category :
Languages : en
Pages : 316
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Book Description
An experimental and numerical study of the injection of liquid jets in subsonic gaseous crossflows was conducted. The focus of the study was on spatial size distributions of this type of atomization in different flow conditions. An experimental setup was developed to characterize the spray in conditions similar to real applications. The test chamber developed enabled the use of various spray characterization techniques by providing optical access from four sides of the spray. This allowed for size and velocity measurements of the spray using various laser diagnostic techniques such as PDPA, IPI and PIV. Also, a model was developed to predict the size distribution of the spray downstream of the nozzle. This model is based on combining both theoretical calculation of a jet in crossflow and a modified KIVA3 numerical code.
Author: Pietro Brazzale
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
In the framework of the SFR (Sodium-cooled Fast Reactors), the management of tritium contamination in sodium circuits and the control of its release in atmosphere is fundamental. In order to capture and recover the tritium, it is necessary to maintain a certain amount of hydrogen dissolved in the liquid sodium stream. The hydrogen injection by permeation through nickel dense membranes has been proposed to provide a continuous hydrogen intake to liquid sodium stream, thus allowing the desired hydrogen concentration to be reached. Similar nickel-based membranes have been developed in the past for SFR (i.e. hydrogen-meters), but a lack of knowledge and applications is found for what concerns the hydrogen injection by permeation. In this study, an original permeator prototype has been designed and an experimental activity at pilot-scale has been carried out on an experimental sodium loop, under different operating conditions (temperature: 375°C-450°C; hydrogen supply partial pressures: 5 kPa-28 kPa). A dedicated measurement system, based on the gas chromatography on the retentate side, coupled to the hydrogen detection inside sodium (through a dedicated hydrogen-meter using mass spectrometry), has provided an accurate estimation of the hydrogen permeation flowrate. Tests are carried out for both a gas-vacuum and a gas-sodium configuration: in both cases, the global hydrogen permeation flowrate depends linearly on the square root of the hydrogen partial pressure in the feed side up to 20 kPa, thus demonstrating that the process in this range is limited by the hydrogen diffusion inside the nickel membrane. In particular, the presence of sodium in the permeate side does not affect significantly the whole mass transfer process. The results, compared to the permeation theoretical laws, provide an experimental permeability coefficient, specific to the prototype geometry and configuration. Comparison to values from the literature results for small nickel samples, showed that some metal-lattice phenomenon, probably linked to the membranes deformation by cold-working, could affect the hydrogen permeation in this study. In fact, slightly higher permeation coefficient with a lower activation energy is found here if compared to the literature. Finally, the experimental process has been successfully validated, thus demonstrating the feasibility of this application at the pilot-scale. An analytical 1D model has been set up with a multi-physics approach, in order to assess the radial hydrogen mass transfer in steady conditions over three physical domains, including gas, nickel and liquid sodium. It includes benchmark literature correlations for the convective mass transfer inside gas and sodium phase in tubular geometry, the Sieverts law for the H-Ni and H-Na equilibrium, coupled to the Richardson's law for the hydrogen permeation through the nickel membrane, assumed to be diffusion-limited. CFD simulations, performed in a 2D axial-symmetric geometry with the software Comsol Multiphysics, have provided a better comprehension of the transport phenomena taking place and have confirmed the results of the straightforward 1D model under certain conditions, specific to the experimental prototype. Finally, the experimental results have shown a good agreement with the 1D model and CFD simulations in the whole temperature interval and up to a hydrogen partial pressure of 20 kPa. By resuming all the elements provided by this study, both at the experimental and numerical stage, a single equation law has been defined to describe the prototype performance and to enhance the industrial scale-up design activity.
