Academic literature on the topic 'Bio-Oil, Thermal Conductivity, Mineral-Oil, Thermal Properties'

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Journal articles on the topic "Bio-Oil, Thermal Conductivity, Mineral-Oil, Thermal Properties"

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Kaneta, M., and P. Yang. "Effects of Thermal Conductivity of Contacting Surfaces on Point EHL Contacts." Journal of Tribology 125, no. 4 (2003): 731–38. http://dx.doi.org/10.1115/1.1540121.

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With actual and virtual materials, the effects of the thermal conductivity of contacting surfaces on EHL are investigated through experimental analyses using the optical interferometry technique and the Newtonian thermal EHL analyses in consideration of the variation of oil properties in all directions within the film. A mineral bright stock is used as a lubricant. It is found that the distributions of pressure and film thickness, including the minimum film thickness, are influenced very much by the entrainment velocity and the slide-roll ratio. One of the causes is the temperature-viscosity w
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Saman, Norhafezaidi Mat, Izzah Hazirah Zakaria, Mohd Hafizi Ahmad, and Zulkurnain Abdul-Malek. "Effects of Plasma Treated Alumina Nanoparticles on Breakdown Strength, Partial Discharge Resistance, and Thermophysical Properties of Mineral Oil-Based Nanofluids." Materials 14, no. 13 (2021): 3610. http://dx.doi.org/10.3390/ma14133610.

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Mineral oil has been chosen as an insulating liquid in power transformers due to its superior characteristics, such as being an effective insulation medium and a great cooling agent. Meanwhile, the performance of mineral oil as an insulation liquid can be further enhanced by dispersing nanoparticles into the mineral oil, and this composition is called nanofluids. However, the incorporation of nanoparticles into the mineral oil conventionally causes the nanoparticles to agglomerate and settle as sediment in the base fluid, thereby limiting the improvement of the insulation properties. In additi
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Paciorek-Sadowska, Joanna, Marcin Borowicz, and Marek Isbrandt. "Effect of Evening Primrose (Oenothera biennis) Oil Cake on the Properties of Polyurethane/Polyisocyanurate Bio-Composites." International Journal of Molecular Sciences 22, no. 16 (2021): 8950. http://dx.doi.org/10.3390/ijms22168950.

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Rigid polyurethane/polyisocyanurate (RPU/PIR) foam formulations were modified by evening primrose (Oenothera biennis) oil cake as a bio-filler in the amount of 5 to 50 wt.%. The obtained foams were tested in terms of processing parameters, cellular structure (SEM analysis), physico-mechanical properties (apparent density, compressive strength, brittleness, accelerated aging tests), thermal insulation properties (thermal conductivity coefficient, closed cells content, absorbability and water absorption), flammability, smoke emission, and thermal properties. The obtained results showed that the
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Umar, Sadik, Fauziah Sulaiman, Nurhayati Abdullah, and Saiful Najmee Mohamad. "Preparation, Stability and Thermal Characteristic of Al2O3/Bio-Oil Based Nanofluids for Heat Transfer Applications." Journal of Nanoscience and Nanotechnology 20, no. 12 (2020): 7569–76. http://dx.doi.org/10.1166/jnn.2020.18616.

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Conventional thermal fluids with suspended nanoparticles, known as nanofluids, have been developed for heat transfer applications. Heat transfer loss could be reduced significantly if the thermophysical properties of the heat transfer fluid are improved, which to some extent, could reduce the present global environmental challenges associated with energy utilization, such as climate change and global warming. In this work, the role of the concentration of sodium dodecyl-benzene sulfonate (SDBS) in the stability of Al2O3/bio-oil nanofluid is investigated the zeta potential value, and its implic
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Katpatal, Dhananjay C., Atul B. Andhare, and Pramod M. Padole. "Viscosity behaviour and thermal conductivity prediction of CuO-blend oil based nano-blended lubricant." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 8 (2018): 1154–68. http://dx.doi.org/10.1177/1350650118819634.

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Lubricants play a major role in mechanical machines and studies on various nanolubricants are reported in the literature. This work deals with nanolubricants using blend of oils as base for nanolubricants. Nano-blended lubricants were prepared with a blend of ISO VG46 oil (mineral oil) and Jatropha oil (non-edible vegetable oil) and using them in proportions of 90:10 and 80:20 by dispersing 0.5–3 wt.% of surface-modified CuO nanoparticles by a two-step method. Various properties of these oils such as dispersion stability, viscosity and thermal conductivity were determined. Experimental values
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Qing, Soo Hui, W. Rashmi, M. Khalid, T. C. S. M. Gupta, M. Nabipoor, and Mohammad Taghi Hajibeigy. "Thermal conductivity and electrical properties of hybrid SiO2-graphene naphthenic mineral oil nanofluid as potential transformer oil." Materials Research Express 4, no. 1 (2017): 015504. http://dx.doi.org/10.1088/2053-1591/aa550e.

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Glavatskih, Sergei B., Michel Fillon, and Roland Larsson. "The Significance of Oil Thermal Properties on the Performance of a Tilting-Pad Thrust Bearing." Journal of Tribology 124, no. 2 (2001): 377–85. http://dx.doi.org/10.1115/1.1405129.

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This paper is a report into an experimental and theoretical investigation of the effect of oil thermal properties on the performance of a tilting-pad thrust bearing. Three oils, namely poly-α-olefin, ester and mineral base, were chosen for this study. These oils all have same viscosity grade (ISO VG46) but differ in their rates of viscosity variation with temperature and in their heat capacity and thermal conductivity values. Mineral base oil of a higher viscosity grade (ISO VG68) was also analyzed for comparison. Experimental data were obtained from an equalizing tilting-pad thrust bearing wi
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Borowicz, Marcin, Joanna Paciorek-Sadowska, Jacek Lubczak, and Bogusław Czupryński. "Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application." Polymers 11, no. 11 (2019): 1816. http://dx.doi.org/10.3390/polym11111816.

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This article raised the issue of studies on the use of new bio-polyol based on white mustard seed oil and 2,2’-thiodiethanol (3-thiapentane-1,5-diol) for the synthesis of rigid polyurethane/polyisocyanurate (RPU/PIR) foams. For this purpose, new formulations of polyurethane materials were prepared. Formulations contained bio-polyol content from 0 to 0.4 chemical equivalents of hydroxyl groups. An industrial flame retardant, tri(2-chloro-1-methylethyl) phosphate (Antiblaze TCMP), was added to half of the formulations. Basic foaming process parameters and functional properties, such as apparent
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Paciorek-Sadowska, Joanna, Marcin Borowicz, Bogusław Czupryński, Ewa Tomaszewska, and Joanna Liszkowska. "New bio-polyol based on white mustard seed oil for rigid PUR-PIR foams." Polish Journal of Chemical Technology 20, no. 2 (2018): 24–31. http://dx.doi.org/10.2478/pjct-2018-0019.

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AbstractA new bio-polyol based on white mustard oil (Synapis alba) and 2,2′-mercaptodiethanol (2,2′-MDE) was obtained. The synthesis was carried out by two-step method. In the first stage, the double bond of the unsaturated fatty acid residues was oxidized, and in the second step the epoxy rings were opened with 2,2’-MDE. The properties of the obtained bio-polyol for application as raw material in polyurethane-polyisocyanurate foams (PUR-PIR) - hydroxyl number, acid number, density, viscosity, pH, water content, FTIR,1H NMR and13C NMR were investigated. Based on the obtained results, foaming f
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Aranberri, Ibon, Sarah Montes, Ewa Wesołowska, Alaitz Rekondo, Krystyna Wrześniewska-Tosik, and Hans-Jürgen Grande. "Improved Thermal Insulating Properties of Renewable Polyol Based Polyurethane Foams Reinforced with Chicken Feathers." Polymers 11, no. 12 (2019): 2002. http://dx.doi.org/10.3390/polym11122002.

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In the present work, sustainable rigid polyurethane foams (RPUF) reinforced with chicken feathers (CF) were prepared and characterized. The bio-based polyol used to formulate the foams was obtained from castor oil. This investigation reports the influence of the chicken feathers fibers as reinforcement of RPUF, on water absorption, thermal, mechanical and morphological properties (field-emission scanning electron microscope—FESEM) and thermal conductivity on water-blown biofoams. It was found that the biofoams improved thermal insulating properties when CF was added. The addition of CF to foam
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Dissertations / Theses on the topic "Bio-Oil, Thermal Conductivity, Mineral-Oil, Thermal Properties"

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Rückert, Marcel, Katharina Schmitz, and Hubertus Murrenhoff. "Comparison of Heat-Properties and its Implications between Standard-Oil and Bio-Oil." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200109.

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An important criteria for optimising hydraulic systems is their size. Especially for tanks and heat exchangers oil parameters as heat capacity and thermal conductivity have a big influence on the size. Additionally, various oils differ in their parameters. Accordingly, the heat capacity and thermal conductivity need to be known. However, little research has been done. Data-sheets usually do not provide any thermal data. In this paper, the thermal conductivity is measured for varying types of hydraulic oils. The thermal conductivity is determined by a newly designed test-rig measuring the radia
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Roshankhah, Shahrzad. "Physical properties of geomaterials with relevance to thermal energy geo-systems." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54893.

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Energy related geo-systems involve a wide range of engineering solutions from energy piles to energy geo-storage facilities and waste repositories (CO₂, nuclear). The analysis and design of these systems require proper understanding of geo-materials, their properties and their response to extreme temperature and high stress excitations, the implications of mixed-fluid conditions when contrasting fluid viscosities and densities are involved, the effect of static and cyclic coupled hydro-thermo-chemo-mechanical excitations, and rate effects on the response of long design-life facilities. This s
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Book chapters on the topic "Bio-Oil, Thermal Conductivity, Mineral-Oil, Thermal Properties"

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Hall, Christopher. "3. Tough but slippery." In Materials: A Very Short Introduction. Oxford University Press, 2014. http://dx.doi.org/10.1093/actrade/9780199672677.003.0003.

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‘Tough but slippery’ considers the physical characteristics of materials. Understanding properties in certain materials allows us to predict their behaviour and to use them appropriately in industrial processes. Aerospace engineers require lightweight materials with low density, but oil industry drilling engineers use the dense mineral barytes to make heavy muds for controlling the pressures in wells. Thermal expansivity, specific heat, and thermal conductivity are properties that describe the thermal behaviour of materials. Mechanical material properties include stiffness, strength, hardness, weakness, softness, brittleness, and toughness. In metals, yield and plasticity are of the greatest significance and value. Elasticity of polymer molecules and the viscosity and specific energy of liquids and gases are also described.
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Du, Boxue. "Oil and Paper Insulation for DC Converter Transformer." In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch024.

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Transformer oil and oil-impregnated paper, serve as the essential parts of converter transformer, suffering various electric fields. The accumulation of surface charge on the paper would lead to flashover. When the power flow of the HVDC system is reversed, the charge field will easily lead to discharge. Direct-fluorination is a method which could affect the material property without alternating the bulk property. Besides, a new type of nano-modified transformer oil is a method to improve properties. This chapter presents a study of the effect of fluorination on surface charge behavior, the effect of polarity reversal voltages on interface charge behavior and the effect of Boron nitride (BN) nanoparticles on the high thermal conductivity of transformer oil. Results show that fluorination had an influence on the chemical property of the paper and BN nanoparticles has improvements in heat transfer process. In the polarity reversal test, the dissipation rate becomes smaller as the reversal time gets longer.
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"Experimental Research on Heat Transfer Performance in MQL Grinding With Different Nanofluids." In Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1546-4.ch008.

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An investigation into the effect of nanofluid minimum quantity lubrication (MQL) on the temperatures in surface grinding is presented and discussed. Six types of nanoparticles, namely molybdenum disulfide (MoS2), zirconium dioxide (ZrO2), carbon nanotube (CNT), polycrystalline diamond, aluminum oxide (Al2O3), and silica dioxide (SiO2), are considered to mix individually with a pollution-free palm oil in preparing the nanofluids. A commonly used Ni-based alloy was chosen as the workpiece material. It is shown that CNT nanofluid results in the lowest grinding temperature of 110.7°C and the associated energy proportionality coefficient of 40.1%. The relevant physical properties of the nanofluids such as the coefficient of thermal conductivity, viscosity, surface tension, and the contact state between the droplets and workpiece surface (contact angle) were discussed to shine a light on their effect on the cooling performance. A mathematical model for convective heat transfer coefficient was then developed based on the boundary layer theories.
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Li, Changhe, and Hafiz Muhammad Ali. "Experimental Research on Heat Transfer Performance in MQL Grinding With Different Nanofluids." In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch042.

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An investigation into the effect of nanofluid minimum quantity lubrication (MQL) on the temperatures in surface grinding is presented and discussed. Six types of nanoparticles, namely molybdenum disulfide (MoS2), zirconium dioxide (ZrO2), carbon nanotube (CNT), polycrystalline diamond, aluminum oxide (Al2O3), and silica dioxide (SiO2), are considered to mix individually with a pollution-free palm oil in preparing the nanofluids. A commonly used Ni-based alloy was chosen as the workpiece material. It is shown that CNT nanofluid results in the lowest grinding temperature of 110.7°C and the associated energy proportionality coefficient of 40.1%. The relevant physical properties of the nanofluids such as the coefficient of thermal conductivity, viscosity, surface tension, and the contact state between the droplets and workpiece surface (contact angle) were discussed to shine a light on their effect on the cooling performance. A mathematical model for convective heat transfer coefficient was then developed based on the boundary layer theories.
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Enoki, Toshiaki, Morinobu Endo, and Masatsugu Suzuki. "Exfoliated Graphite Formed by Intercalation." In Graphite Intercalation Compounds and Applications. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195128277.003.0013.

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When a graphite intercalation compound (GIC) is heated, a thermal expansion, large (~3.5 × 10−5/K) compared with most materials, occurs along the c-axis, while the in-plane lattice constant remains almost unchanged. This anisotropic thermal expansion behavior is reversible and can be modeled in terms of a superposition of the c-axis thermal expansion coefficients of the constituent layers (Salamanca-Riba and Dresselhaus, 1986). However, when a GIC is heated above a specific critical temperature, a gigantic c-axis expansion can occur, with sample elongations (ΔLS/LS) of a factor of 300 (Inagaki et al., 1983). This extremely large elongation, also called “exfoliation,” is generally irreversible, and leads to a spongy, foamy, low-density, high-surface-area carbon material of about 85 m2/g (Thomy and Duval, 1969). This exfoliation effect alters the structural integrity of the GIC material and therefore is undesirable for structural applications of GICs. However, this spongy, foam-like material is advantageous for some applications, such as gas adsorption. The commercial version of the exfoliated wormy-like material is called vermicular graphite from its appearance, and is used for high-surface-area applications. Furthermore, when pressed into sheets, it is called grafoil and is widely used as a high-temperature gasket or packing material because of its flexibility, chemical inertness, low transverse thermal conductivity, and ability to withstand high temperatures. Grafoil-type products can also be used to contain molten corrosive liquid metals at high temperatures and to extinguish metal fires (Anderson and Chung, 1984). These products have been expected to be useful for oil adsorption (Toyoda et al., 1998a, 1998b, 1999). In this chapter, the preparation and conventional as well as advanced applications of exfoliated graphite with unique properties, obtained from QIC-based materials, is demonstrated.
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Conference papers on the topic "Bio-Oil, Thermal Conductivity, Mineral-Oil, Thermal Properties"

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Wrenick, Scott, Paul Sutor, Harold Pangilinan, and Ernest E. Schwarz. "Heat Transfer Properties of Engine Oils." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64316.

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The thermal properties of engine oil are important traits affecting the ability of the oil to transfer heat from the engine. The larger the thermal conductivity and specific heat, the more efficiently the oil will transfer heat. In this work, we measured the thermal conductivity and specific heat of a conventional mineral oil-based diesel engine lubricant and a Group V-based LHR diesel engine lubricant as a function of temperature. We also measured the specific heat of ethylene glycol. The measured values are compared with manufacturers’ data for typical heat transfer fluids. The Group V-based
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Thomas, Shijo, C. B. Sobhan, Jaime Taha-Tijerina, T. N. Narayanan, and P. M. Ajayan. "Investigations on Transient Natural Convection in Boron Nitride-Mineral Oil Nanofluid Systems." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87420.

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Nanofluids are suspensions or colloids produced by dispersing nanoparticles in base fluids like water, oil or organic fluids, so as to improve their thermo-physical properties. Investigations reported in recent times have shown that the addition of nanoparticles significantly influence the thermophysical properties, such as the thermal conductivity, viscosity, specific heat and density of base fluids. The convective heat transfer coefficient also has shown anomalous variations, compared to those encountered in the base fluids. By careful selection of the parameters such as the concentration an
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Mashali, Farzin, Ethan M. Languri, Gholamreza Mirshekari, Jim Davidson, and David Kerns. "Microstructural and Thermal Characterization of Diamond Nanofluids." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87496.

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Conventional heat transfer fluids such as water, ethylene glycol, and mineral oil, that are used widely in industry suffer from low thermal conductivity. On the other hand, diamond has shown exceptional thermal properties with a thermal conductivity higher than five times of copper and about zero electrical conductivity. To investigate the effectiveness of nanodiamond particles in traditional heat transfer fluids, we study deaggregated ultra-dispersed diamonds (UDD) using X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). Furthermore, nanodiamond nanofluids were prepa
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Niazmand, Amirreza, Prajwal Murthy, Satyam Saini, Pardeep Shahi, Pratik Bansode, and Dereje Agonafer. "Numerical Analysis of Oil Immersion Cooling of a Server Using Mineral Oil and Al2O3 Nanofluid." In ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipack2020-2662.

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Abstract Increased demand for computer applications has manifested a rise in data generation, resulting in high Power Density and Heat Generation of servers and their components, requiring efficient thermal management. Due to the low heat carrying capacity of air, air cooling is not an efficient method of data center cooling. Hence, the liquid immersion cooling method has emerged as a prominent method, where the server is directly immersed in a dielectric liquid. The thermal conductivity of the dielectric liquids is drastically increased with the introduction of non-metallic nanoparticles of s
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Olson, Brandon W., та Ali Fahham. "Application of the 3ω Hot Wire Technique for Measurement of Fluid Thermophysical Properties". У ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32454.

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The popular 3ω method of measuring thermophysical properties of solids is adapted for the simultaneous measurement of thermal conductivity and heat capacity in both liquids and gases. This technique is experimentally simple and has a lower susceptibility to random experimental noise, bulk fluid motion, radiation losses, and non-linear effects than other transient hot wire measurement methods. The compactness of the 3ω hotwire allows it to be used with different fluids in a variety of circumstances with very little specialized experimental equipment. Both the experimental setup and theoretical
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Li, Yutian, Changchun Wu, Xiaokai Xing, Mingliang Yue, and Yun Shang. "Testing and Analysis of the Soil Thermal Conductivity in Tropical Desert and Grassland of West Africa." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90291.

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Thermal conductivity is one of the basic thermal properties of soil. For a buried pipeline, the thermal conductivity of the surrounding soil is the most important factor determining the overall heat transfer from the pipeline, and plays an important role in assessing the safety and energy consumption of pipeline operation. For providing reliable basic data for the commissioning and the operation of a waxy crude oil pipeline stretching in southwest Sahara Desert, six phases of thermal conductivity testing were performed along the pipeline route, respectively in February, March, April, May, July
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Taha-Tijerina, Jaime, T. N. Narayanan, Soorya Avali, and P. M. Ajayan. "2D Structures-Based Energy Management Nanofluids." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87890.

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Designing of compact electronic and electrical instruments needs the development of high efficient thermal and electrical management fluids. Recent advances in layered materials enable large scale synthesis of diverse two-dimensional (2D) structures. Some of these 2D materials are good choices as nanofillers in heat/electrical energy transfer fluids; mainly due to their high surface area available for energy conduction. Among various 2D nanostructures, hexagonal boron nitride (h-BN) or graphene (G) exhibit versatile properties such as outstanding thermal conductivity (TC), excellent mechanical
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Mohan, Manu, Shijo Thomas, J. Taha-Tijerina, T. N. Narayanan, C. B. Sobhan, and P. M. Ajayan. "Heat Transfer Studies in Thermally Conducting and Electrically Insulating Nano-Oils in a Natural Circulation Loop." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64285.

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Mineral oil (MO), a dielectric insulating fluid, is commonly used as coolant and lubricant in various applications, such as in high voltage power transmission systems and machinery. The mode of heat transfer in most of these systems is natural convection. Prolonged operation at higher temperatures leads to the degradation of the dielectric coolant, which leads to diverse problems, such as shortage or breakdown of these devices and apparatuses. Increasing the heat transfer capability of the insulating fluid will minimize the energy consumption of the system, prolonging its useful life. It is pr
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Du, B. X., X. L. Li, J. Li, and X. Y. Tao. "Effects of BN nanoparticles on thermal conductivity and breakdown strength of vegetable oil." In 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM). IEEE, 2015. http://dx.doi.org/10.1109/icpadm.2015.7295312.

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Abdulagatova, Z. Z., S. N. Kallaev, Z. M. Omarov, A. G. Bakmaev, B. A. Grigor’ev, and I. M. Abdulagatov. "THERMAL PROPERTIES OF HEAVY OIL SATURATED RESERVOIR ROCKS BEFORE AND AFTER HIGH TEMPERATURES TREATMENT." In RENEWABLE ENERGY: CHALLENGES AND PROSPECTS. ALEF, 2020. http://dx.doi.org/10.33580/2313-5743-2020-8-1-253-287.

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This paper aims to study of the variation of key thermal properties (thermal diffusivity, heat capacity, and derived values of thermal conductivity) of heavy oil saturated reservoir rock sample before and after high temperature treatment. A laser flash method (LFA 457) and differential scanning calorimeter (DSC 204 F1) were employed to study of the temperature effect on the thermal diffusivity ( ) and heat capacity ( ) of natural heavy oil reservoir rock sample. The measurements of the thermal – diffusivity have been made over the temperature range from (296 to 1023) K. The isobaric heat capaci
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