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Artykuły w czasopismach na temat "Vapour expansion"
Ahmed, Aram Mohammed, i Attila R. Imre. "The effect of recuperator on the efficiency of ORC and TFC with very dry working fluid". MATEC Web of Conferences 345 (2021): 00012. http://dx.doi.org/10.1051/matecconf/202134500012.
Pełny tekst źródłaSaini, D. K., A. Baruah i G. Sachdeva. "Vapour compression system analysis undergoing expansion in an ejector". Journal of Physics: Conference Series 1240 (lipiec 2019): 012131. http://dx.doi.org/10.1088/1742-6596/1240/1/012131.
Pełny tekst źródłaMielczarek, Z. A., i T. J. Trojanowski. "Refrigerant vapour superheat in direct-expansion air cooling coils". International Communications in Heat and Mass Transfer 14, nr 3 (maj 1987): 341–46. http://dx.doi.org/10.1016/0735-1933(87)90035-2.
Pełny tekst źródłaMiyauchi, Masato, Takumi Watanabe, Daiki Hoshi i Tomonori Ohba. "Irreversible adsorption of acidic, basic, and water gas molecules on calcium-deficient hydroxyapatite". Dalton Transactions 48, nr 47 (2019): 17507–15. http://dx.doi.org/10.1039/c9dt03704g.
Pełny tekst źródłaGuardone, Alberto, Piero Colonna, Emiliano Casati i Enrico Rinaldi. "Non-classical gas dynamics of vapour mixtures". Journal of Fluid Mechanics 741 (13.02.2014): 681–701. http://dx.doi.org/10.1017/jfm.2013.13.
Pełny tekst źródłaDuplat, Jérôme. "Dynamics of expansion and collapse of explosive two-dimensional bubbles". Journal of Fluid Mechanics 859 (22.11.2018): 677–90. http://dx.doi.org/10.1017/jfm.2018.804.
Pełny tekst źródłaArshed, G. M., S. Z. Shuja, B. S. Yilbas i M. O. Budair. "Transient Helium Jet Expansion Into Stagnant Air in Relation to Laser Drilling". Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 219, nr 7 (1.07.2005): 667–83. http://dx.doi.org/10.1243/095440605x31517.
Pełny tekst źródłaSarkar, Jahar. "Exergy analysis of vortex tube expansion vapour compression refrigeration system". International Journal of Exergy 13, nr 4 (2013): 431. http://dx.doi.org/10.1504/ijex.2013.058101.
Pełny tekst źródłaLiu, Yefeng, i Jun Yu. "Review of vortex tube expansion in vapour compression refrigeration system". IOP Conference Series: Earth and Environmental Science 153 (maj 2018): 032021. http://dx.doi.org/10.1088/1755-1315/153/3/032021.
Pełny tekst źródłaGouin, Henri, i Pierre Seppecher. "Temperature profile in a liquid–vapour interface near the critical point". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, nr 2204 (sierpień 2017): 20170229. http://dx.doi.org/10.1098/rspa.2017.0229.
Pełny tekst źródłaRozprawy doktorskie na temat "Vapour expansion"
Poullain, Thomas. "Etude numérique et expérimentale de l’évaporation sous vide d’alliages métalliques : application à la refusion VAR de Zircaloy-4". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0189.
Pełny tekst źródłaComposition and chemical segregation control is primordial when producing high value-added materials, such as zirconium alloys for nuclear industry. Vacuum processing allows production very high purity ingot, however it also presents an additional problematic concerning control and prediction of alloy elements evaporation. This PhD dissertation aims at improving prediction of volatile metallic species evaporation during vacuum elaboration, especially during Zircaloy 4 VAR (Vacuum Arc Remelting).First, the evaporation kinetics and the expansion of the metal vapour produced during vacuum melting is investigated. The study is done with a combination of volatilisation experiments using an experimental electron beam furnace and particle based numerical simulation (FPM) of vapour behaviour. Our volatilisation studies on pure metals, Ti and Zr, show the importance of collisions above the liquid on the vapour expansion and its recondensation. Determination of Fe and Sn vapour expansion during Zy4 vacuum melting combined with particle simulation, allowed us to determine thermodynamic activity coefficients values for these elements in liquid Zy4.Then, metallic vapour expansion under VAR conditions is studied, with particular interest shown to condensation flows on the different surfaces. Application of our numerical model to Zy4 shows that the vapour deposited on the mould has a very different composition compared to the alloy. Finally, the particle model is coupled to an ingot growth model and we study the influence of evaporation, condensation and crown reincorporation with regard to volatile solute segregation and depletion. This coupling also provides a first prediction of crown thickness and composition and we compare them to industrial crown samples
Semeraro, Emanuele. "Experimental investigation on hydrodynamic phenomena associated with a sudden gas expansion in a narrow channel". Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066516/document.
Pełny tekst źródłaThe sharp vaporization of superheated liquid sodium is investigated. It is suspected to be at the origin of the automatic shutdown for negative reactivity, occurred in the Phénix reactor at the end of the eighties.An experimental apparatus has been designed and operated to reproduce the expansion of overpressurized air, superposed to water in a narrow vertical rectangular section channel.When expansion begins, the initial flat interface separating the two fluids becomes corrugated under the development of two-dimensional Rayleigh-Taylor instabilities. The interface area increases significantly and becomes even 50 times larger than the initial value. Since the channel is very narrow, instabilities along the channel depth do not develop.The gas expansion in a narrow channel can be divided into two main phases: Rayleigh-Taylor (linear and non-linear) and multi-structures (transition and chaotic) phases. The former is characterized by the dynamic of corrugated profile and the interface area results proportional to the amplitude of corrugation The latter is influenced by the behavior of the liquid structures dispersed in gas matrix and the interface area is mainly proportional to the number of liquid structures.The distribution of volume fraction suggests a model of channel flow consisting of three regions: the regular profile of peaks, the spike region and the structures tails. The analysis of sensibility to surface tension confirms that, with a lower surface tension, the fluids configuration is more unstable. The interface corrugations are more pronounced and more structures are produced, leading to a higher increment of the interface area
Hwang, Moonkyu. "Numerical modeling of the expansion phase of vapor explosions". Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/16761.
Pełny tekst źródłaSouza, Rafaela Faciola Coelho de. "Estudo da influência da sucção na pressão de expansão de materiais argilosos com a técnica da transferência de vapor". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-19102015-105616/.
Pełny tekst źródłaThis thesis presents the quantification and characterization of expansion, especially the influence of suction on samples of sedimentary materials from Corumbatai Formation that occurs in Sao Paulo. Undisturbed and compacted samples with different moisture contents were tested with swelling pressure tests at constant volume method by flooding, and also with suction control by vapour transfer technique. Compacted mixtures of this material with bentonite in differents proportions, and mixtures of bentonite with sandy non-expansive material from the Botucatu Formation were also tested. The suction control was performed by the use of NaCl salt solutions at concentrations prepared to perform 40,000, 25,000, 10,000 and 5,000 kPa suctions. For the tests, it was developed a system for load application and automatic retrieval of pressure. To accelerate the wetting process by vapour, we used an external reservoir connected to an air pump adapted to promote air circulation inside the edometric cell, specially made for this study. The expansion results in flooding tests showed increasing swelling pressure with decreasing moisture content. Consequently there was an increase in the initial suction of the tested samples, which kept increasing as the rate of bentonite was raised in the mixtures, with a peak of ca. 700 kPa for the test with dry pure bentonite compacted. In the microstructure analysis of the samples by mercury intrusion porosimetry, the samples showed variation only in macropores after swell; and the ones compacted at optimum moisture, and subsequently air dried, showed no significant change after the swell. In scanning electron microscopy (SEM) it was possible to verify the change in the voids of the samples, as well as to visualize the variation in the structure and texture. In addition, the SEM confirmed clay minerals deterninated in mineralogical characterization. The results of controlled suction with swell tests showed absence of swell pressure for Corumbatai samples tested in undisturbed conditions, and compacted condition at optimum moisture content, and then air dried. However, when compacted in the form of dry powder, as well as when compacted dry, mixed with different proportions of bentonite, this material showed swelling pressures with vapor transfer technique, as well as mixtures of bentonite with non-expansive material of Botucatu Formation. The absence of swell was explained by the slow damping provided by the vapor transfer that although promoting increasing dampen, did not sufficiently mobilized volume variation capable of transmitting blowing pressure. Therefore, the swell tests with the vapor transfer technique were effective to evaluate the swelling just in cases where clay minerals with swell potential were present in significant proportions.
Akraiam, Atea I. Bubaker. "Metal cluster production by condensation of metal vapour in supersonic expansions and by aggregation in droplets". Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/31834.
Pełny tekst źródłaSuardin, Jaffee Arizon. "The application of expansion foam on liquefied natural gas (LNG) to suppress LNG vapor and LNG pool fire thermal radiation". [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2906.
Pełny tekst źródłaSILVEIRA, HELVECIO C. K. da. "Analise de integridade estrutural de tubos de geradores de vapor deteriorados por corrosao sob tensao pelo primario na regiao de transicao de expansao junto ao espelho". reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11035.
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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Patiño, Pérez Jorge. "Experimentación de nuevas configuraciones destinadas a la mejora del COP en ciclos de compresión de vapor que utilizan CO2 como refrigerante". Doctoral thesis, Universitat Jaume I, 2013. http://hdl.handle.net/10803/125529.
Pełny tekst źródłaCon el fin de contribuir y fomentar el uso del fluido natural CO2 como refrigerante, se ha elaborado la presente tesis doctoral que está centrada en estudios teóricos y posterior análisis experimental del funcionamiento de una planta frigorífica de compresión de vapor que emplea CO2 como refrigerante en condiciones supercríticas. Esta nueva iniciativa permite minimizar al máximo el impacto medioambiental generado por las emisiones de refrigerantes artificiales, aunque requiere de una tecnología completamente nueva debido a las propiedades físicas del propio refrigerante. El objeto de este análisis se centra en continuar buscando aquellas configuraciones que logren mejorar el rendimiento energético de las instalaciones que empleen R744 como refrigerante.
En la presente tesis doctoral se ha efectuado un estudio experimental de una configuración con un sistema de expansión en una única etapa, donde se ha analizado la influencia del aceite en la masa de refrigerante a cargar en la instalación y en el comportamiento de la misma. Este funcionamiento se compara con el comportamiento que adopta un ciclo que cuenta con un sistema de doble etapa de expansión y depósito intermedio entre ambas etapas, que le proporciona la masa que necesita en todo momento. Además, se estudia el comportamiento de la instalación al insertar en ambas configuraciones un IHX. Por otro lado, en este trabajo también se ha llevado a cabo un análisis experimental de la instalación operando en régimen supercrítico frente al modo de operación en régimen subcrítico cuando las condiciones externas lo permiten. De esta forma, se evalúa la posibilidad de operar con ambos sistemas a partir de una instalación dimensionada para operar en régimen supercrítico. El último análisis experimental realizado se basa en la búsqueda de nuevas configuraciones para mejorar el rendimiento energético del equipo, donde se estudia la extracción de vapor en el depósito de acumulación y la posterior inyección ó recompresión en diferentes puntos de la instalación.
Estos análisis experimentales se han complementado con estudios de carácter teórico. El primer estudio teórico se ha basado en el modelado de la instalación frigorífica para analizar la energía calorífica generada en el foco caliente y destinada a activar otras aplicaciones. El segundo estudio ha consistido en el modelado matemático de dos tipos diferentes de intercambiadores de calor, uno de tubo concéntrico y flujo paralelo y otro de flujo cruzado con tubos aleteados externamente.
Gana, Inès. "Caractérisation physique et chimique des substances à activité thérapeutique : application aux études de profil de stabilité et de préformulation". Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCB164/document.
Pełny tekst źródłaThe development of a drug for a given therapeutic target requires several steps, which can be summarized by drug screening, a preclinical phase and a number of clinical phases. These steps allow the selection of an active substance and a verification of its therapeutic efficacy and toxicological safety. The latter two criteria define the quality of the drug, which once demonstrated, must be guaranteed throughout its shelf life. Quality is assessed through stability studies that are carried out with the raw material of the active substance (preformulation phase) and with the final product. The intrinsic stability of the active substance depends on its chemical and physical properties and their characterization is the core of the stability studies, which in addition consists of sensitivity studies of the active pharmaceutical ingredient (API) for environmental factors that can modify the intrinsic properties of the substance. The approach presented in this work is based on the one hand on the assessment of the chemical stability, i.e. the reactivity of APIs through chemical purity studies and forced degradation in solution, and on the other hand on the assessment of the physical stability. For the latter, crystalline polymorphism is of great importance, as is the ability of the API to form hydrates or solvates. The study of crystalline polymorphism is based on the construction of pressure-temperature phase diagrams in accordance with thermodynamic requirements leading to the stability condition domains of the different crystalline forms. The stability behavior of five APIs used or meant for oral applications has been studied as part of this work. The chemical analysis of tienoxolol, an antihypertensive drug, has demonstrated its sensitivity for hydrolysis and oxidation. Seven degradation products were identified and patterns of fragmentation have been established. Pressure-temperature phase diagrams have been constructed for bicalutamide and finasteride, drugs against prostate cancer, using a topological approach based on data available in the literature. The study demonstrates that the thermodynamic relationship (enantiotropy or monotropy) between crystalline forms under ordinary conditions can change depending on the pressure. This is important for drug development as it demonstrates how stability information can be obtained by standard laboratory measurements accessible to industrial research laboratories without the necessity to carry out experiments under pressure. The topological approach for the construction of phase diagrams has subsequently been validated by measuring transition temperatures as a function of pressure. Experiments have been carried out with benzocaine, a local anesthetic, and with cysteamine hydrochloride, a drug used against cystinosis. Two crystalline forms were observed in the case of benzocaine. They exhibit an enantiotropic relationship that becomes monotropic at high pressure. For cysteamine hydrochloride, a new crystalline form (form III) was discovered. The thermodynamic relationship between the new form III and the known form I is enantiotropic for the entire temperature and pressure range. Cysteamine hydrochloride’s sensitivity to water has been studied, as it is hygroscopic. It has been demonstrated that it becomes deliquescent in the presence of water and no trace of a hydrate has been found. Finally, a study combining thermal and chromatographic methods showed that, under the effect of temperature, cysteamine hydrochloride turns into cystamine in the solid as well as in the liquid state, The latter is known to be an important impurity of cysteamine hydrochloride. In conclusion, the approach developed in this work allowed to characterize the stability properties of a number of APIs and to determine the factors that may change these properties and influence the intrinsic stability (...)
Glos, Jan. "Modelování a řízení toků elektrické a tepelné energie v plně elektrických automobilech". Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433039.
Pełny tekst źródłaKsiążki na temat "Vapour expansion"
American Society of Mechanical Engineers., red. Cylinder proportions for the compound engines determined by their free expansion losses. [S.l: s.n., 1986.
Znajdź pełny tekst źródłaCenter, Langley Research, red. Chemical vapor deposition fluid flow simulation modelling tool. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1992.
Znajdź pełny tekst źródłaBuchetti, Jacques. Machines a Vapeur Actuelles, Supplément, Machines Simples: Compound a Triple Expansion ... Creative Media Partners, LLC, 2018.
Znajdź pełny tekst źródłaCzęści książek na temat "Vapour expansion"
Das, K. S., i S. K. Wilson. "The Unsteady Expansion and Contraction of a Two-Dimensional Vapour Bubble Confined Between Superheated or Subcooled Plates". W Progress in Industrial Mathematics at ECMI 2004, 489–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-28073-1_72.
Pełny tekst źródłaZauner, E., i G. E. A. Meier. "Phase Changes of a Large-Heat-Capacity Fluid in Transcritical Expansion Flows". W Adiabatic Waves in Liquid-Vapor Systems, 103–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83587-2_10.
Pełny tekst źródłaPeters, F., i B. Paikert. "Growth of n-Propanol Droplets in Argon Studied by Means of Shock Tube Expansion-Compression Process". W Adiabatic Waves in Liquid-Vapor Systems, 217–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83587-2_19.
Pełny tekst źródłaGspann, J. "Large clusters of cesium from pure vapor expansions". W Small Particles and Inorganic Clusters, 871–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76178-2_210.
Pełny tekst źródłaVostrikov, A. A., i D. Yu Dubov. "Cluster generation in expansions of pure water vapour and of mixtures with carbon dioxide". W Small Particles and Inorganic Clusters, 879–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76178-2_212.
Pełny tekst źródłaPisano, Antonio. "Physics in a Vaporizer: Saturated Vapor Pressure, Heat of Vaporization, and Thermal Expansion". W Physics for Anesthesiologists, 105–13. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57330-4_12.
Pełny tekst źródłaPruett, J. G., H. Windischmann, M. L. Nicholas i P. S. Lampard. "Mass and Temperature Measurement in Pure Vapor Expansion of Metals and Semi-Metals". W Physics and Chemistry of Small Clusters, 109–14. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-0357-3_17.
Pełny tekst źródłaPisano, Antonio. "Physics in a Vaporizer: Saturated Vapor Pressure, Heat of Vaporization, and Thermal Expansion". W Physics for Anesthesiologists and Intensivists, 173–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72047-6_15.
Pełny tekst źródła"- The formation of disperse systems by homogeneous condensation with vapour jet expansion". W Processes of Formation of Micro -and Nanodispersed Systems, 143–91. CRC Press, 2015. http://dx.doi.org/10.1201/b19771-6.
Pełny tekst źródłaZinn-Justin, Jean. "Critical exponents and equation of state from series summation". W Quantum Field Theory and Critical Phenomena, 975–91. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834625.003.0041.
Pełny tekst źródłaStreszczenia konferencji na temat "Vapour expansion"
Bergero, Stefano, Anna Chiari i Enrico Nannei. "Vapour Compression and Liquid Desiccant Hybrid System for Air Conditioning". W ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95541.
Pełny tekst źródłaStosic, Nikola, i Ian K. Smith. "Utilization of Expansion Work in Transcritical CO2 Heat Pumps in Combined Heating and Cooling". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68722.
Pełny tekst źródłaRead, Matthew G., Ian K. Smith i Nikola Stosic. "Optimisation of Power Plant Operating on Waste Heat of Gas IC Engine Driven Power Generator". W ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66550.
Pełny tekst źródłaParsons-Karavassilis, D., K. Dowling, P. M. W. French i J. R. Taylor. "Laser ablation using an ultrafast all-solid-state Cr:LiSAF regenerative laser amplifier system". W The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cthh76.
Pełny tekst źródłaSpinelli, A., V. Dossena, P. Gaetani, C. Osnaghi i D. Colombo. "Design of a Test Rig for Organic Vapours". W ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22959.
Pełny tekst źródłaZanforlin, S., i R. Gentili. "Stable Fuel Confinement in Stratified Charge GDI Engines". W ASME 2004 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/icef2004-0919.
Pełny tekst źródłaBergero, Stefano, i Anna Chiari. "Energy Saving in a Heat Pump Air-Conditioning System Using Liquid Desiccant and Membrane Contactors". W ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63516.
Pełny tekst źródłaRoumeliotis, I., i K. Mathioudakis. "Moisture Condensation Effect on Turbine Performance Tests". W ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53839.
Pełny tekst źródłaTang, Z., H. Kim, I. Yaroslavski, G. Masindo, Z. Celler i D. Ellsworth. "Novel Thermal Barrier Coatings Produced by Axial Suspension Plasma Spray". W ITSC2011, redaktorzy B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima i A. McDonald. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0571.
Pełny tekst źródłaPini, M., A. Spinelli, V. Dossena, P. Gaetani i F. Casella. "Dynamic Simulation of a Test Rig for Organic Vapours". W ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54212.
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