International Journal of Thermophysics

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Joule–Thomson Inversion in Vapor–Liquid–Solid Solution Systems
International Journal of Thermophysics - Tập 30 - Trang 1130-1143 - 2009
Dan Vladimir Nichita, Jerome Pauly, Jean-Luc Daridon
Solid phase precipitation can greatly affect thermal effects in isenthalpic expansions; wax precipitation may occur in natural hydrocarbon systems in the range of operating conditions, the wax appearance temperature being significantly higher (as high as 350 K) for hyperbaric fluids. Recently, methods for calculating the Joule–Thomson inversion curve (JTIC) for two-phase mixtures, and for three-ph...... hiện toàn bộ
Influence of Spacer Systems on Heat Transfer in Evacuated Glazing
International Journal of Thermophysics - - 2009
K. Swimm, H. Weinläder, H.-P. Ebert
One attractive possibility to essentially improve the insulation properties of glazing is to evacuate the space between the glass panes. This eliminates heat transport due to convection between the glass panes and suppresses the thermal conductivity of the remaining low pressure filling gas atmosphere. The glass panes can be prevented from collapsing by using a matrix of spacers. These spacers, ho...... hiện toàn bộ
Crystallization and fibril formation in polymers
International Journal of Thermophysics - Tập 11 - Trang 225-237 - 1990
E. J. Clark, J. D. Hoffman
Solutions of crystallizable polymers subjected to orientation crystallize in a fibrillar morphology if the polymer is solidified rapidly. The central core of the polymer fibers consists of thin, extended chain crystallites interspersed with disordered regions. The extended chain crystals are small fibrils having diameters generally less than a few hundred angstroms, while the lengths are usually n...... hiện toàn bộ
Enthalpy and Heat Capacity of Cs–Pb Alloys in Solid and Liquid States
International Journal of Thermophysics - - 2024
A. R. Khairulin, С. В. Станкус
Thermal Property Characterization of a Low Supercooling Degree Binary Mixed Molten Salt for Thermal Energy Storage System
International Journal of Thermophysics - Tập 40 - Trang 1-12 - 2019
Y. Li, C. G. Wang, G. Y. Liu, Q. Z. Zhu, Z. Z. Qiu
In this paper, LiNO3–NaCl binary mixed molten salt with high phase change enthalpy was selected as phase change materials (PCM). LiNO3 was used as the main phase change material, and NaCl was used as the additional material to change the properties and reduce the supercooling degree of molten salts. LiNO3–NaCl binary mixed molten salts with different mass proportion were prepared by static meltin...... hiện toàn bộ
Density and Viscosity of Mixtures of n-Hexane and 1-Hexanol from 303 to 423 K up to 50 MPa
International Journal of Thermophysics - Tập 23 - Trang 1537-1550 - 2002
F. Audonnet, A. A. H. Pádua
Experimental results for the density and viscosity of n-hexane+1-hexanol mixtures are reported at temperatures from 303 to 423 K and pressures up to 50 MPa. The binary mixture was studied at three compositions, and measurements on pure 1-hexanol are also reported. The two properties were measured simultaneously using a single vibrating-wire sensor. The present results for density have a precision ...... hiện toàn bộ
Microsecond Laser Polarimetry for Emissivity Measurements on Liquid Metals at High Temperatures—Application to Tantalum
International Journal of Thermophysics - Tập 23 Số 5 - Trang 1281-1291 - 2002
Pottlacher, G., Seifter, A.
The aim of this work was to determine accurate and reliable thermophysical properties of liquid tantalum from melting up to temperatures of 5000 K. Temperature measurements on pulse-heated liquid metal samples reported by different authors have always been performed under the assumption of a constant emissivity over the whole liquid range because of the lack of data for liquid metals. The uncertai...... hiện toàn bộ
Evaluation of Thermal Conductivity of Hyperstoichiometric UO2+x by Molecular Dynamics Simulation
International Journal of Thermophysics - Tập 28 - Trang 661-673 - 2007
Sho Yamasaki, Tatsumi Arima, Kazuya Idemitsu, Yaohiro Inagaki
The thermal conductivity of UO2+x has been investigated by an equilibrium molecular dynamics (EMD) simulation up to 2000 K using the Born–Mayer–Huggins interatomic potential with the partially ionic model. In the present EMD system with the Green–Kubo method, the thermal conductivity was determined by the auto-correlation functions of energy and charge currents and the cro...... hiện toàn bộ
Toward a liquid-state theory with accurate critical-region behavior
International Journal of Thermophysics - Tập 6 - Trang 561-571 - 1985
J. S. Høye, G. Stell
A scaling-theory approach that yields the scaled thermodynamics in the critical region as the solution of an ordinary differential equation is given, along with a power-series “isocline” representation of the solution yielding a polynomial fit of a high accuracy. A means of extending the approach to the whole liquid-state region through a self-consistent integral equation for the radial distributi...... hiện toàn bộ
Photothermal deflection in a supercritical fluid
International Journal of Thermophysics - Tập 16 - Trang 1439-1453 - 1995
M. E. Briggs, R. W. Gammon
Photothermal deflection is among the most sensitive techniques available for the measurement of small, localized heating, such as that from the absorption of a focused laser beam in the bulk or surface of a material. A thin optical probe beam is deflected by the refractive-index gradients arising from the heating, and the size of the deflection provides the measure of the heating. We describe the ...... hiện toàn bộ
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