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Dissertations / Theses on the topic 'Vapor pressure measurement'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wright, Jeffery Raymond. "Recovery of refrigerant vapor leakage using high pressure psychrometrics." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/17258.

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2

Hatada, Naoyuki. "Low-Temperature Synthesis, Thermodynamic Properties, and Electrical Conduction Properties of Lanthanum Phosphates." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157583.

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3

Gabes, Yamina. "Étude de la faisabilité et mise au point d'un dispositif de mesure des équilibres liquide-vapeur : application à l'étude des solutions aqueuses d'électrolytes." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL104N.

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L’objectif du présent travail concerne la construction d'un dispositif manométrique statique destiné à mesurer la pression de vapeur totale à l'équilibre au-dessus de solutions aqueuses d'électrolytes. Deux dispositifs ont été construits. Le premier a permis de mettre au point le protocole expérimental permettant, en particulier, de faire des séries de mesures à composition constante. Le second a été construit avec une instrumentation de haut niveau. Le système H2O-NaCl a été étudié entre la température ambiante et 100°C environ et les résultats expérimentaux ont été traités à l'aide des modèl

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4

Hållstedt, Julius. "Epitaxy and characterization of SiGeC layers grown by reduced pressure chemical vapor deposition." Licentiate thesis, KTH, Microelectronics and Information Technology, IMIT, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1718.

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<p>Heteroepitaxial SiGeC layers have attracted immenseattention as a material for high frequency devices duringrecent years. The unique properties of integrating carbon inSiGe are the additional freedom for strain and bandgapengineering as well as allowing more aggressive device designdue to the potential for increased thermal budget duringprocessing. This work presents different issues on epitaxialgrowth, defect density, dopant incorporation and electricalproperties of SiGeC epitaxial layers, intended for variousdevice applications.</p><p>Non-selective and selective epitaxial growth of Si<sub

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5

Härtel, Martin [Verfasser], and Thomas M. [Akademischer Betreuer] Klapötke. "Studies towards the gas-phase detection of hazardous materials by vapor pressure measurements with the transpiration method in combination with vacuum outlet GC/MS / Martin Härtel ; Betreuer: Thomas M. Klapötke." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1144857244/34.

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6

Mokdad, Sid-Ali. "Contribution à la détermination de la courbe de pression de vapeur saturante de l’eau pure dans la plage de –80 °C à +100 °C, avec une très haute exactitude." Thesis, Paris, CNAM, 2012. http://www.theses.fr/2012CNAM0825/document.

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La détermination des propriétés physiques de l’eau pure, notamment la pression de vapeur saturante en fonction de la température, est un enjeu majeur en humidité et identifié comme tel par le Comité Consultatif de Thermométrie (CCT-WG6) sous-groupe Humidité du Comité Technique de Température (TC-T) afin d’améliorer les incertitudes des références nationales en humidité. A cette fin, le LNE-CETIAT et le LNE-Cnam ont développé conjointement un dispositif expérimental permettant d’accéder au couple température / pression de vapeur saturante de l’eau pure. Le principe est basé sur une mesure stati

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7

Messabeb, Hamdi. "Caractérisation thermodynamique des équilibres liquide-vapeur des systèmes CO2 – eaux salées dans des conditions de hautes températures et hautes pressions." Thesis, Pau, 2017. http://www.theses.fr/2017PAUU3013/document.

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Cette thèse est financée par Total et par l’agence nationale de la recherche (ANR), elle s’inscrit dans le cadre du projet SIGARRR (simulation de l’impact des gaz annexes injectés avec le CO2 pendant le stockage géologique sur la réactivité des roches réservoirs). L’objectif de la thèse est d’acquérir expérimentalement des points de solubilité du CO2 dans des solutions aqueuses salées de chlorure de sodium et de chlorure de calcium dans des conditions de hautes températures (323K < T < 423K) et hautes pressions (5 MPa < P < 20 MPa) à des salinités élevées (1 à 6 mol/kg).Suite à une

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8

El, Kharbachi Abdelouahab. "Etude des réactions complexes en phase solide pour stockage d'hydrogène." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENI010.

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Le stockage d'hydrogène en phase solide sous forme d'hydrures, est l'une des solutions non-polluantes futures pour le stockage et le transport de l'énergie. Parmi les matériaux candidats, LiBH4 a été sélectionné vu sa capacité gravimétrique élevée en hydrogène (jusqu'à 13,6 % H2 en masse). Ce matériaux possède des propriétés thermodynamiques et cinétiques insuffisamment établies pour comprendre son comportement dans les applications futures. Sa décomposition peut être facilitée en présence de l'hydrure MgH2. Ainsi, le composite MgH2-xLiBH4<br>Hydrides for solid-state hydrogen storage are one o

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9

Lin, Chi-Fung, and 林麒峰. "Measurement of the Vapor Pressure of Desiccant Systems." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/72100071012315682725.

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碩士<br>中原大學<br>化學工程研究所<br>90<br>The vapor pressure of salt/ organic solvent/ water systems have been measured at 30, 35, 40, 50, 60, 70℃. The salts studied are LiCl, LiBr and CaCl2.The organic solvents are TEG (Triethylene glycol) and PG (Propylene glycol)＋water. The concentration of salts are ranging from 4 wt%~25 wt%. The concentration of organic solvent are ranging from 50 wt%~80 wt%. The Antoine equation has been applied to correlate the measured data. Satisfactory results were obtained for calculation of the vapor pressure of salt / organic solvent / water for the system studied. The resu

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10

Farouk, Tanvir I. "Measurement of adsorption for pressures very close to the saturation vapor pressure." 2004. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=95168&T=F.

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11

LEE, Chiou-Cheng, and 李秋成. "The measurement and relation of organic salts aqueous vapor pressure." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/55918951418469679304.

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12

倪建青. "Development of a theoretical adsorption model under constant pressure condition and measurement of apparent solid-side mass diffusivity for a siica gel-water vapor adsorption system." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/88305034088860894939.

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博士<br>國立中興大學<br>機械工程學系<br>90<br>ABSTRACT An analytical solution for mass diffusion in a spherical microporous particle experienced with a small step change of gaseous phase adsorbate concentration is obtained. Thermal effect and gas-side mass transfer resistance are considered. The governing equations are solved by using the Laplace transformation method. Three factors, α, β and γ are defined to govern the heat and mass transfer in the process. α and β are relevant to the thermal effect and γ dominates the gas-side mass transfer resistance. The effect of the external mass trans

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13

"Measurement and thermodynamic interpretation of high pressure vapour-liquid equilibrium data." Thesis, 1990. http://hdl.handle.net/10413/141.

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14

Chapman, Robert Douglas. "Estimation of vapour pressure and solar radiation in South Africa." Thesis, 2004. http://hdl.handle.net/10413/3570.

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Vapour pressure (interchangeably referred to as atmospheric humidity) and solar radiation data are, for different reasons, difficult data to obtain in South Africa. Relative humidity measuring instruments (from which vapour pressure values can be obtained) require constant maintenance , while solar radiation can only be measured electronically. Data from both of these variables are, however, required as inputs to the Penman-Monteith equation, which has become the internationally accepted reference for the estimation of potential evaporation. It is necessary, therefore, to produce estimates of

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15

Motchelaho, A. M. Megne. "Vapour-liquid equilibrium measurements using a static total pressure apparatus." Thesis, 2006. http://hdl.handle.net/10413/9033.

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A novel static total pressure apparatus was designed, built and commissioned for the measurement of VLE data at low to moderate pressures and temperatures. The apparatus of Fischer and Gmehling [1994] was used as a basis for the current design. The continuous-dilution technique (Gibbs and Van Ness [1972]) for sample introduction has been incorporated in our apparatus, so that the full composition range of a mixture can be covered in two runs. This procedure has the considerable advantage of speed. If the liquid is properly degassed, the main limitation of the method is the accuracy with which

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16

Knock, Jason. "Modification, reconstruction and commissioning of a vapour recirculation apparatus for high-pressure low-temperature vapour-liquid equilibrium measurements." Thesis, 2010. http://hdl.handle.net/10413/3762.

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The vapour recirculation apparatus of Moodley [2002] was modified, reconstructed, and commissioned in order to be used in the acquisition of high-pressure vapour-liquid equilibrium (HPVLE) data at low temperatures. The original equipment of Moodley [2002] was modified with the aim of achieving the desired operating temperature range which the original equipment was unable to achieve. Major modifications were carried out on the cooling circuit allowing the equipment to reach temperatures as low as -30°C, a significant improvement to the original equipments minimum attainable temperature of -5°C

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17

Clifford, Scott Llewellyn. "Low-pressure vapour-liquid equilibrium and molecular simulation of carboxylic acids." Thesis, 2004. http://hdl.handle.net/10413/4282.

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18

Weng-Hong, Hwu, and 胡文宏. "Measurement of Vapor-Liquid Equilibria at Elevated pressures for Binary Mixtures of CO2 with esters." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/54459051587902132601.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>89<br>A semi-flow type apparatus was used to measured the vapor-liquid equilibrium (VLE) data of CO2 + ethyl caproate, ethyl caprylate, ethyl caprate, diethyl methylmalonate, and diethyl ethylmalonate five binary mixtures at temperatures 308.15 K, 318.15 K and 328.15 K over the pressure range from 1 MPa to 10 MPa. Total 145 new data were obtained for these five binary mixtures. The solubility of carbon dioxide in the liquid phase, increases with increasing pressure and decreases with increasing temperature. The Krichevsdy-Ilinskaya（KI）equation was used to

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19

Harris, Roger Allen. "Robust equipment for the measurement of vapour-liquid equilibrium at high temperatures and high pressures." Thesis, 2004. http://hdl.handle.net/10413/3660.

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In this work VLE data was measured on three different pieces of equipment. Measurements were undertaken in the laboratory of Professor Gmehling in Oldenburg, Germany using two different static cells and in the Thermodynamics Research Unit (TRU), University of Natal, South Africa using a specially designed dynamic still. The three pieces of equipment used are as follows: i.) Static apparatus of Rarey and Gmehling (1993), ii.) Static apparatus of Kolbe and Gmehling (1985) as modified by Fischer and Wilken (2001), and, iii.) Dynamic apparatus ofHarris et al. (2003b). In total 370 data points were

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20

Reddy, Prashant. "Development of novel apparatus for vapour-liquid equilibrium measurements at moderate pressures." Thesis, 2006. http://hdl.handle.net/10413/4173.

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In this work, a novel experimental apparatus has been designed, constructed and commissioned for the measurement of VLE at pressures up to 750 kPa and temperatures up to 600 K. The project undertaken represents a complete re-working of the design of Harris (2004), which was plagued by irregularities in the equipment operation and in the acquisition of experimental data. As in the work of Harris (2004), the design of the apparatus presented here is based upon the highly successful glass VLE still design of Raal (Raal and Muhlbauer, 1998). The novel apparatus is principally constructed from mach

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21

Lilwanth, Hitesh. "Vapour-liquid equilibrium measurements at moderate pressures using a semi-automatic glass recirculating still." Thesis, 2014. http://hdl.handle.net/10413/11208.

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Vapour-liquid equilibrium (VLE) data of high accuracy and reliability is essential in the development and optimization of separation and chemical processes. This study focuses on satisfying the growing demand for precise VLE data at low to moderate pressures, by development of a computer-aided dynamic glass still which is semi-automated. The modified dynamic glass still of Joseph et al. (2001) was employed to achieve precise measurement of phase equilibrium data for a pressure range of 0 to 500 kPa. The study involved the assembling and commissioning of a new moderate pressure dynamic still an

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22

Morgan, David Lee. "Extension of Pitzer corresponding states correlations using new vapor pressure measurements of then-alkanes C(10) to C(28)." Thesis, 1990. http://hdl.handle.net/1911/16373.

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Pitzer et al. (1955) three-parameter (T$\sb{\rm c}$, P$\sb{\rm c}$,$\omega$) corresponding states principle (CSP) correlations for saturated properties are extended to long-chain n-alkanes and to other classes of compounds by use of n-alkane reference fluid properties. New vapor pressure measurements, a critical review of the n-alkane literature, and numerous correlational studies are described. Direct vapor pressure measurements of zone-refined n-alkanes (decane, dodecane, tetradecane, hexadecane, octadecane, nonadecane, eicosane, docosane, tetracosane, and octacosane) are reported in the 0.1

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23

彭兆良. "Experimental measurements of the vapor-liquid equilibrium data for the ternary system of water-phenol-ethanol at atmospheric pressure." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/92256592295609475930.

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24

Kuo, Chien-Sheng, and 郭建生. "Tert-Amyl methyl ether / 2-methyl-2-butene and Tert-Amyl methyl ether / Methanol Vapor-Liquid Equilibrium Measurements at Atmospheric Pressure." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/27364862888253899800.

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碩士<br>國立中正大學<br>化學工程研究所<br>90<br>In this study, two sets of vapor-liquid equilibrium data, 2-menthyl-2-butene / tert-amyl methyl ether and methanol / tert-amyl methyl ether, are measured by Fisher vapor-liquid phase equilibrium apparatus at atmospheric pressure. All these data are examined by thermodynamic consistency test successfully. These two sets of vapor-liquid equilibrium data, which cannot obtain from thermodynamic database, can be applied to support the thermodynamic theory research. In this work, activity coefficient in binary liquid phase is calculated from exp

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25

Chen, Shang-Yi, and 陳尚誼. "Vapor Pressure, Density, and Viscosity Measurements of Mixed-Solvent Desiccant Systems containing Glycol (DEG/TEG/T4EG/PG/DPG/TPG) + Salt (MgCl2) + Water." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42807792852604569371.

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碩士<br>中原大學<br>化學工程研究所<br>98<br>In this work, new experimental data for vapor pressure, density, and viscosity of the mixed-solvent desiccant systems containing 40.0 wt% glycol (1) + salt (2) + water (3) were reported for temperatures up to 343.15 K (normal atmospheric condition). The considered glycols were diethylene glycol, triethylene glycol, propylene glycol, tetraethylene gloycol, dipropylene glycol and tripropylene glycol; and the salt is magnesium chloride (wt% = 4.0, 9.0, and 16.0). The vapor pressure, density, and viscosity were presented as functions of temperature and compositions.

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26

Wu, Sheng-Hong, and 吳昇鴻. "Measurements of Vapor Pressure of Carbon Dioxide Absorbents (Aqueous Alkanolamines Solutions and Deep Eutectic Solvents) and Viscosity of Mixed-Solvent Desiccant (Glycols/ MgCl2/ H2O)." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/05804859153686629626.

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碩士<br>中原大學<br>化學工程研究所<br>99<br>This study presented experimental data on vapor pressures of carbon dioxide absorbents at temperatures from (303.15 to 343.15) K. The CO2 absorbents used were deep eutectic solvents (DESs) + water systems at concentrations (20, 40, 60 and 80 wt%); 30 wt% alkanolamine + water systems; and mixed alkanolamines + water systems at 30 wt% total amine concentration. The DESs considered were choline chloride + urea (Reline), choline chloride + malonic acid (Maline), choline chloride + glycerol (Glyceline) and choline chloride + ethylene glycol (Ethaline) while the alkano

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27

Preuß, Andrea. "Synthesis and Characterization of Transition Metal Complexes as well as their Application in the Formation of Metal-based Materials and the Investigation of their (Spectro)Electrochemical Behavior." 2020. https://monarch.qucosa.de/id/qucosa%3A71451.

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This Ph.D. thesis concentrates on the synthesis and characterization of tailor-made metal-based precursors and their application in the metal-organic chemical vapor deposition (MOCVD), combustion chemical vapor deposition (CCVD) and in the spin-coating process. Therefore, different complexes containing copper, ruthenium, palladium and gold were synthesized and investigated concerning their thermal properties, especially their decomposition behavior and volatility. Copper(II) and palladium(II) β-ketoiminates were synthesized and used in MOCVD or spin-coating deposition experiments for the form

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