Academic literature on the topic 'Liquid paraffin'

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Journal articles on the topic "Liquid paraffin"

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Gurbanov, А. Q., and L. Q. Hajikerimova. "New inhibitor against asphaltene-resin-paraffin deposits and salts." Scientific Petroleum, no. 2 (December 30, 2023): 41–47. http://dx.doi.org/10.53404/sci.petro.20230200047.

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The deposition of asphaltenes, resins, paraffins (ARP) and salts in tubing, surface equipment and transport lines is one of the important problems in the production and transportation of well products. At high temperatures at the bottom of the well, the components of crude oil are in a liquid state; when the temperature decreases, as they rise to the surface and exit the well, asphaltene, resinous, and paraffin compounds begin to separate from the oil and settle in production pipes and equipment. Laboratory studies were carried out using highly paraffinic oil from the Sangachal-Duvanni-Khara-Z
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Simal-Gándara, Jesús, Miguel Sarria-Vidal, and Rinus Rijk. "Determination of Paraffins in Food Simulants and Packaging Materials by Liquid Chromatography with Evaporative Mass Detection and Identification of Paraffin Type by Liquid Chromatography/Gas Chromatography and Fourier Transform Infrared Spectroscopy." Journal of AOAC INTERNATIONAL 83, no. 2 (2000): 311–19. http://dx.doi.org/10.1093/jaoac/83.2.311.

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Abstract A liquid chromatographic method with evaporative mass detection (EMD) is described for the determination of paraffins in food contact materials that do not contain polyolefin oligomers, or paraffins migrating from these materials into fatty food simulants or certain simple foods. A normal-phase column operating at maximum column efficiency separates nonparaffinic and paraffinic materials without resolving the latter into individual components, and EMD is used to quantitate the paraffins. An on-line qualitative method that uses liquid chromatography/gas chromatography with flame ioniza
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Dreyer, J., and C. Hecht. "Ermittlung eines optimierten Paraffins zur Sanierung feuchtegeschädigter Bausubstanz / Identification of an Appropriate Paraffin for the Retrofitting of Moisture Damaged Buildings." Restoration of Buildings and Monuments 4, no. 5 (1998): 451–66. http://dx.doi.org/10.1515/rbm-1998-5306.

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Abstract The filling of the pores with paraffin is a known and effective method to establish a subsequent moisture barrier in walls. Paraffin is compatible with the building material and the environment. Is the material warm enough before, or while, the treatment takes place, the liquid paraffin fills the pores completely. The distribution of the paraffin in the building material will be controlled with the temperature around the penetration area. Experiments with different building materials take place in order to find the connection between the receptivity of different paraffins at different
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T., S. S. Rao, Dhurve Susheela, and Awasthi Shubhra. "Oxidation of liquid paraffins." Journal of Indian Chemical Society Vol. 90, Apr 2013 (2013): 409–22. https://doi.org/10.5281/zenodo.5769832.

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Department of Chemistry, Dr. Hari Singh Gour University, Sagar-470 003, Madhya Pradesh, India <em>E-mail</em> : drtssrao@yahoo.co. in <em>Manuscript received 28 December 2011, revised 02 May 2012, accepted 07 June 2012</em> Alkylhydroperoxides formed initially as the products of paraffin oxidation undergo decomposition to give alcohols, ketones etc. The further oxidation of these products yields carboxylic acids. The transition metal salts like stearates of Mn, Co and Cr and acetylacetonates of Mn, Co, Cr, Mo and complexes of metals like Ru, Pd, Ni etc. can accelerate the decomposition. Temper
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Sen, Subhash C., Soumen Maity, Kausik Ganguli, Kausik Goswami, and P. Ray. "Binary liquid-liquid equilibria of aniline-paraffin and furfural-paraffin systems." Canadian Journal of Chemical Engineering 69, no. 6 (1991): 1367–73. http://dx.doi.org/10.1002/cjce.5450690619.

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Syahidah and Tekat Dwi Cahyono. "STABILISASI DIMENSI KAYU DENGAN APLIKASI PARAFIN CAIR." PERENNIAL 4, no. 1 (2008): 18. http://dx.doi.org/10.24259/perennial.v4i1.178.

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Wood is a special material which can swell and shrink with the change of environmental humidity. The aim of this research was to enhance the dimensional stability of wood. Clear specimens of jackfruit wood (Artocarpus heterophyllus) ) measuring 15 cm (L) x 2 cm (R) x 2 cm (T) and mangium wood (Acacia mangium Wild.) measuring 5 cm (L) x 5 cm (R) x 5 cm (T) were prepared for treatment. The samples were firstly soaked in a liquid paraffin with 0% concentration (100% kerosene soluble), 33.3 %, 66,6% and 100%. All samples were then vacuumed for 1 hour and soaked in water for 24 hours. Results indic
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Wang, Qing, Cun Bao Zhang, Zhao Yang Ding, and Jun Liu. "Study on the Thermal Properties of Paraffin/Ceramsite Phase Change Concrete." Advanced Materials Research 838-841 (November 2013): 91–95. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.91.

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Mixed paraffins, which had low phase transition temperature and high enthalpy,were used as phase change material (PCM),light-weight clay ceramsite was used as carrier, paraffin/ceramsite PCM was prepared and which was encapsulated by epoxy resin and triethylenetetramine.The results show that the proportion of liquid paraffin to solid paraffin is 4:6 through both temperature-time curve test and DSC analysis.The quality of paraffin which is absorbed in vacuum condition for 2 hours is 95.5% and the minimum leakage quality of paraffin in the process of thermal cycling is 3.3% which is half of the
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Li, Yan, Guo You You, and Zhu Qunzhi. "Numerical Simulation of Paraffin Melting Process in an Inclined Channel." Key Engineering Materials 896 (August 10, 2021): 111–16. http://dx.doi.org/10.4028/www.scientific.net/kem.896.111.

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Numerical simulation of the melting of paraffin in the inclined straight channel shows that the melting speed of paraffin is faster in the early stage and gradually slows down in the later stage. It is found that heat conduction is the main heat transfer mode in the early stage of paraffin melting. With the increasing number of liquid paraffin, natural convection occurs in the liquid paraffin. The liquid paraffin with higher temperature flows upward due to the effect of buoyance and lift, and convection heat transfer gradually increases and takes the dominant position in the melting process.
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Xu, Shu Hui, and Guo Qiang Yang. "Numerical Simulation of Heat Transfer Characteristics of Melting Process of Paraffin Heat Storage Ball." Applied Mechanics and Materials 291-294 (February 2013): 1690–95. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1690.

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In this paper, a paraffin heat storage ball whose diameter is 100mm is the research object. Two mathematical models of paraffin melting process are established respectively when the natural convection of liquid phase of paraffin is considered and ignored. The melting process of paraffin heat storage ball which initial temperature is 290K is simulated by using the solidification/melting model of FLUENT. Through analyzing the temperature distribution of the ball and proportion of solid-liquid phase in the ball in the melting process at a certain time, studying the time history of the proportion
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Borisova, Nikol, Plamen Petkov, and Hristo Iliev. "Study of binary liquid capillary bridges stretched between two solid flat surfaces." Mathematical Modeling 6 (October 9, 2022): 13–16. https://doi.org/10.5281/zenodo.7172634.

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Liquid capillary bridges (CBs), created between two flat solid surfaces, parallel to each other, are of significant importance for number of scientific and industrial applications. In this paper, we present our experimental investigation of the liquid CBs at stretching, created by two immiscible liquids: cedar oil&ndash;water and paraffin-water with common interface. The behaviour of these binary structures was studied and compared with that of the single liquid CBs. It was found that the binary liquid CBs exist in the same definition domain as the single liquid CBs. Moreover, the current pape
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Dissertations / Theses on the topic "Liquid paraffin"

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Sheikh, Khalid Ahmad. "Formulation and characterisation of the lipogels of magnesium stearate and liquid paraffin." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=14513.

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Sabourin, Shaun. "Auto-Ignition of Liquid n-Paraffin Fuels Mixtures as Single Droplets Using Continuous Thermodynamics." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20135.

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This thesis reports a model to predict the auto-ignition time of single droplets of n-paraffin fuel mixtures using the method of continuous thermodynamics. The model uses experimental data for pure fuels to fit rate parameters for a single-step global chemical reaction equation; from this, correlations for rate parameters as a function of species molecular mass are derived, which are integrated to produce a continuous thermodynamics expression for mixture reaction rate. Experiments were carried out using the suspended droplet-moving furnace technique. The model was then tested and compared to
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McGregor, G. A. G. "An investigation into the demand for illuminating paraffin and liquid petroleum gas in South Africa." Master's thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/17349.

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Bibliography: pages 98-101.<br>This dissertation investigates the demand for illuminating Paraffin (IP) and Liquid Petroleum Gas (LPG) in South Africa, and also tests the energy transition theory. The energy transition process outlines the substitution of fuels that occurs with rural-urban migration. Data on income, IP and LPG prices, demographic trends and IP and LPG volumes are incorporated in models to test the energy transition theory: National and regional projections of demand are derived. Income and price elasticities are derived for testing the energy transition theory, where Engel's L
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Wang, Yu. "Applications of silver ionic liquids." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.676609.

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Madhaoui, Mustapha. "Modélisation des écoulements des fluides complexes avec changement de phase solide-liquide : Application à la formation des dépôts de paraffines dans les conduites pétrolières." Thesis, Pau, 2014. http://www.theses.fr/2014PAUU3025.

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Les variations de température à la surface externe d'une conduite peuvent provoquer la solidification du fluide en écoulement interne, induisant la formation de dépôts solides sur les parois en contact avec le fluide. Ces dépôts peuvent s'avérer néfastes au bon fonctionnement du système intégrant cette conduite ce qui motive l'étude de ces phénomènes physiques afin de comprendre les mécanismes qui les gouvernent et de permettre leur prévention. Ce genre de situations peuvent être rencontrées dans le domaine pétrolier, par exemple lors du transport en pipeline d'huiles chargées de paraffines, d
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Chatelain, Karl. "Etude de la stabilité à l'oxydation des carburants en phase liquide." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLY020/document.

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La stabilité des carburants en phase liquide est de premier ordre dans le domaine du transport. Par exemple, les carburants, les lubrifiants ou les additifs doivent être stables de leur production jusqu'à leur utilisation. Cette thèse a pour but de développer et de valider une méthodologie alliant l’acquisition de données expérimentales et le développement de modèles cinétiques pour l'autoxydation en phase liquide.Expérimentalement, une approche complémentaire a été mise en place pour obtenir à la fois des données de réactivité globales via un appareil PetroOxy et des profils d’espèces via un
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Filipakis, Sofia D'Ornella. "Estudo termodinâmico da precipitação de parafinas em petróleos brasileiros." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3540.

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Um dos grandes desafios enfrentados pela indústria do petróleo é reduzir o impacto causado pela cristalização indesejável de hidrocarbonetos parafínicos de elevada massa molar em tubulações e equipamentos de produção. A cristalização de parafinas em petróleo é normalmente detectada através da determinação da temperatura inicial de aparecimento de cristais (TIAC), que pode ser estimada através de modelagem termodinâmica com base na composição do petróleo. Os objetivos deste trabalho são: estudar os principais modelos termodinâmicos adotados para descrever a precipitação de parafinas; verificar
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Peralta, David. "Evaluation des Metal-Organic Frameworks en adsorption et séparation des hydrocarbures." Phd thesis, Université de Haute Alsace - Mulhouse, 2011. http://tel.archives-ouvertes.fr/tel-00730462.

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L'objectif de cette thèse était d'évaluer quelques Metal-Organic Frameworks (MOFs), choisis en fonction de leur taille de pores, de leur volume poreux et de leur stabilité thermique, en adsorption et séparation des hydrocarbures. Pour étudier le comportement général des MOFs nous avons choisi des MOFs avec des centres métalliques insaturés, des MOFs à charpente anionique et des ZIFs neutres et avons étudié leur sélectivité en séparation de trois familles d'hydrocarbures, à savoir alcanes, alcènes, aromatiques. Les MOFs à centre métallique insaturé se comportent généralement comme des zéolithes
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Chatelain, Karl. "Etude de la stabilité à l'oxydation des carburants en phase liquide." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLY020.

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La stabilité des carburants en phase liquide est de premier ordre dans le domaine du transport. Par exemple, les carburants, les lubrifiants ou les additifs doivent être stables de leur production jusqu'à leur utilisation. Cette thèse a pour but de développer et de valider une méthodologie alliant l’acquisition de données expérimentales et le développement de modèles cinétiques pour l'autoxydation en phase liquide.Expérimentalement, une approche complémentaire a été mise en place pour obtenir à la fois des données de réactivité globales via un appareil PetroOxy et des profils d’espèces via un
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El, Boujaddaini Mohamed Najib. "Modélisation et étude expérimentale du comportement thermo hydraulique des fluides frigoporteurs diphasiques." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0019.

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L’objectif de ce travail consiste en l'étude expérimentale et la modélisation du comportement thermo-hydraulique d'un fluide frigoporteur diphasique (FFD) particulier : le coulis de paraffine, en écoulement dans un canal rectangulaire simulant un échangeur à plaques. Les coulis de paraffine sont constitués de particules millimétriques de paraffine, stabilisées dans une matrice poreuse el mises en suspension dans de l'eau. Les particules de paraffines sont composées de 75% en masse de Norpar®15 et de 25% de polymère tri-block qui sert à gélifier la paraffine. Les résultats expérimentaux issus d
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Books on the topic "Liquid paraffin"

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Ali, Jasem Ahmad Mohamad. Liquid-phase adsorption of n-paraffins on type 5A molecularsieves. Aston University. Department of Chemical Engineering and Applied Chemistry, 1987.

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Book chapters on the topic "Liquid paraffin"

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Zhang, Ling, Hongqi Wan, Huidi Zhou, Lei Chen, and Jianmin Chen. "Synthesis and Tribological Behavior of Surface Coated Cu Nanoparticles in Liquid Paraffin." In Advanced Tribology. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_97.

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Bibin, Chidambaranathan, B. Manoj Kumar, G. Gokul Krishna, S. Elavarasan, and S. Ajith. "Experimentally Investigating the Combined Effect of Paraffin and Liquid Cooling for Battery Thermal Management System." In Green Energy and Technology. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8278-0_32.

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Ohama, Yoshihiko, Katsunori Demura, and Keizo Nnawata. "Reduction in Setting Shrinkage of Polymethyl Methacrylate Concrete by Using Liquid Paraffin and Unsaturated Polyester Resin." In Brittle Matrix Composites 3. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3646-4_57.

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Dom, A. B. M., A. F. Mohd, N. Tulos, E. Nasir, and W. Y. W. Ahmad. "Thermal Energy Storage of Polyester Fabric Coated with Paraffin Liquid as Microencapsulated Phase Change Material (PCM)." In Proceedings of the International Colloquium in Textile Engineering, Fashion, Apparel and Design 2014 (ICTEFAD 2014). Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-011-7_9.

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Bährle-Rapp, Marina. "Paraffinum liquidum." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_7436.

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"liquid paraffin." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_121763.

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"Liquid paraffin." In Drugs Handbook 2012–2013. Bloomsbury Academic, 2011. http://dx.doi.org/10.5040/9781350363595.art-998.

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Hillier, Keith. "Liquid Paraffin." In xPharm: The Comprehensive Pharmacology Reference. Elsevier, 2007. http://dx.doi.org/10.1016/b978-008055232-3.62037-9.

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Raza, Gulfam, Saqib Iqbal, and Abdul Samad Farooq. "Paraffin Wax-Based Thermal Composites." In Paraffin - Thermal Energy Storage Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97195.

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Paraffin waxes are organic phase change materials possessing a great potential to store and release thermal energy. The reversible solid–liquid phase change phenomenon is the under-lying mechanism enabling the paraffin waxes as robust thermal reservoirs based on inherently high latent heat (i.e., ~200–250 J/g). However, the main drawback of paraffin waxes is their inability to expedite the phase change process owing to low thermal conductivity (i.e., ~0.19–0.35 Wm−1 K−1). This drawback has long been documented as a technological challenge of paraffin waxes especially for temperature-control ap
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Moura, Leila, Catherine C. Santini, and Margarida F. Costa Gomes. "Gas Separations using Ionic Liquids." In Chemical Processes for a Sustainable Future. The Royal Society of Chemistry, 2014. http://dx.doi.org/10.1039/bk9781849739757-00582.

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Cryogenic distillation is the most used separation process for mixtures of gases. Implementation of alternative processes with improved economic and environmental performance is needed, especially for low molar mass gaseous hydrocarbon separation in the petrochemical industry. Ionic liquids have been suggested as separating agents for olefin/paraffin gas separation, as absorbents, or as solvents for the chemical complexation of olefins with silver or copper salts. This chapter presents current knowledge on the solubility of ethane, ethylene, acetylene, propane, propylene and methyl acetylene i
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Conference papers on the topic "Liquid paraffin"

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Iverson, Scott, Susan Yaun, and Feras El Yaakobi. "Innovative Chemical Offers Enhanced Performance in Both Paraffin Control and Corrosion Inhibition in Duvernay Production." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00059.

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Abstract The Duvernay formation, a prominent shale formation spanning central Alberta, is an unconventional, liquids-rich reservoir providing access to Canadian condensate and natural gas liquids. As with other shale plays, production from the Duvernay formation presents numerous operational challenges, notably paraffin deposition and corrosion, which are both technically and economically demanding. Addressing these challenges with economic efficiency in mind, we initiated the development of a novel chemistry capable of both treating paraffin and preventing corrosion. This paper discusses the
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Farrell, Andrew Robert, Dario Marcello Frigo, and Gordon Michael Graham. "Flow Assurance Testing with Re-livened Oil – a Cost-Effective Analogue for Live Oil." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17822.

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Abstract It is widely accepted that the use of live crude oil samples provides the most field representative fluids when investigating asphaltenes and paraffin wax problems in laboratory testing. However, this approach is limited by availability of live samples and the potential that samples collected during drilling will be insufficiently representative due to contamination. Rather than going to the significant expense and operational difficulty and risk of collecting and transporting live samples, it is common practice to use ‘dead’ crude oil, i.e., that which has been degassed to ambient pr
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Kee, Kok Eng, Sonja Richter, Marijan Babic, and Srdjan Nesic. "Flow Patterns and Water Wetting in Oil-Water Two Phase Flow – a Flow Loop Study." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4068.

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Abstract Carbon steel pipelines used for transporting oils generally have some water flowing concurrently with the oil phase. The presence of water can lead to internal corrosion problems when free water contacts/wets the pipe wall surface. Therefore, it is pertinent to study how the distribution of water under different oil-water flow conditions can affect the steel surface wetting, i.e. whether the wall surface is wetted by water or oil phase. In this experimental work, a large scale 0.1m ID inclinable flow loop was used to study the two phase oil-water flow in horizontal and vertical positi
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Petrarolo, Anna, Mario Kobald, and Stefan Schlechtriem. "Liquid Layer Combustion Visualization of Paraffin-based Hybrid Rocket Fuels." In 53rd AIAA/SAE/ASEE Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-4828.

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Zhou, D., and C. Y. Zhao. "Solid/Liquid Phase Change Heat Transfer in Latent Heat Thermal Energy Storage." In ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90052.

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Phase change materials (PCMs) have been widely used for thermal energy storage systems due to their capability of storing and releasing large amounts of energy with a small volume and a moderate temperature variation. Most PCMs suffer the common problem of low thermal conductivity, being around 0.2 and 0.5 for paraffin and inorganic salts, respectively, which prolongs the charging and discharging period. In an attempt to improve the thermal conductivity of phase change materials, the graphite or metallic matrix is often embedded within PCMs to enhance the heat transfer. This paper presents an
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Yao, Yuanpeng, and Huiying Wu. "Numerical Simulation of Melting in Metal Foam/Paraffin Composite Phase Change Material Using a Physically More Reasonable Macroscale Model." In ASME 2019 Heat Transfer Summer Conference collocated with the ASME 2019 13th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ht2019-3642.

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Abstract In this work, a macroscale model for melting phase change of metal foam/paraffin composite phase change material (MFPC) is developed by employing the enthalpy-porosity method and volume averaging technique. Both cases of varied and unvaried paraffin density during phase change are investigated in the model, and diffusion dominated interstitial heat exchange between paraffin and metal foam is considered along with the convection dominated interstitial heat transfer. The visualization experiments on melting phase change of copper foam/paraffin composite are carried out to validate the d
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Nogi, Takashi. "Some Tribological Properties of an Ionic Liquid." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63326.

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Some tribological properties of an ionic liquid were investigated by using a pin-on-disc friction and wear tester. Due to running-in, the coefficient of friction of the ionic liquid decreased with time to a very low value of 0.02 which suggests that the lubrication regime was hydrodynamic at the end of the tests. Anti-wear performance of the ionic liquid was substantially comparable to a paraffin-based oil.
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Babaei, Hasan, Pawel Keblinski, and J. M. Khodadadi. "Molecular Dynamics Study of the Interfacial Thermal Conductance at the Graphene/Paraffin Interface in Solid and Liquid Phases." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17478.

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By utilizing molecular dynamics (MD) simulations, we study the interfacial thermal conductance at the interface of graphene and paraffin. In doing so, we conduct non-equilibrium heat source and sink simulations on systems of parallel and perpendicular configurations in which the heat flow is parallel and perpendicular to the surface of graphene, respectively. For the perpendicular configuration, graphene with different number of layers are considered. The results show that the interfacial thermal conductance decreases with the number of layers and converges to a value which is equal to the obt
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Elias, Sara, Mafalda Guedes, Rodrigo Mateus, and Alberto Cabral Ferro. "Oxidation Kinetics of an Equimolar Li-Sn Alloy with Liquid Paraffin Coatings." In Materiais 2022. MDPI, 2022. http://dx.doi.org/10.3390/materproc2022008043.

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Katsman, L., V. Dubovsky, G. Ziskind, and R. Letan. "Experimental Investigation of Solid-Liquid Phase Change in Cylindrical Geometry." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32354.

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The present study explores experimentally the process of melting of a phase change material (PCM) in cylindrical geometry. The study is performed with a commercially available paraffin-type material with the melting point of about 28 degrees Celsius. The experiments are conducted using vertical tubes of four different diameters, filled with the PCM and immersed in a water bath. In each tube the experiments are performed at the water bath temperatures of 10, 20 and 30°C above the melting point of the paraffin. The tubes are transparent, and the melting process is monitored and recorded by a dig
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Reports on the topic "Liquid paraffin"

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พงษ์สามารถ, สุนันท์, เรวดี ธรรมอุปกรณ์ та ธิติรัตน์ ปานม่วง. การศึกษาสารคาร์โบไฮเดรตจากเปลือกทุเรียนในการเตรียมผลิตภัณฑ์ยาน้ำและผลิตภัณฑ์อาหาร. จุฬาลงกรณ์มหาวิทยาลัย, 1989. https://doi.org/10.58837/chula.res.1989.4.

Full text
Abstract:
สารสกัดคาร์โบไฮเดรตจากเปลือกทุเรียน (Durio zibethinus Linn.) สกัดได้เป็น crude fraction (F I) โดยการตกตะกอน aqueous extract ของเปลือกทุเรียนสดด้วย 60% alcohol ส่วน purified fraction (F II) เป็นการทำให้บริสุทธิ์ โดยการตกตะกอนซ้ำด้วย alcohol ของ crude extract ที่ได้จากการตกตะกอน acid-alcohol ของ aqueous extract จากเปลือกทุเรียนสด สามารถสกัดได้ 2.18% F I และ 1.03% F II ตามลำดับ สารสกัดเปลือกทุเรียนมีลักษณะเป็นของแข็ง เป็นผงมีรูปร่างไม่แน่นอน พบทั้งลักษณะกลมและคล้ายไฟเบอร์ จากการดูด้วยกล้อง Scanning electron microscope F I มีสีน้ำตาลอ่อน ส่วน F II เป็นผงสีขาวนวล สารที่สกัดได้มีกลิ่นเฉพาะ มีรสเปรี้
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