International Journal of Thermophysics

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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
Enthalpy and Heat Capacity of Cs–Pb Alloys in Solid and Liquid States
International Journal of Thermophysics - - 2024
A. R. Khairulin, С. В. Станкус
Heat Capacity Measurement of Oxygen-Dissolved V–Ti Alloys1
International Journal of Thermophysics - Tập 21 - Trang 563-570 - 2000
Y. Arita, T. Matsui, T. Suzuki
The heat capacities of (V1−y Ti y ) O x alloys (x=0.13 to 0.18, y=0.06 to 0.23) were measured in the temperature range from 380 to 900μK with a differential scanning calorimeter. A λ-type peak corresponding to the order–disorder phase transition was observed in the heat capacity curves of each (V1−y Ti y ...... hiện toàn bộ
The Viscosity Surfaces of Propane in the Form of Multilayer Feed Forward Neural Networks
International Journal of Thermophysics - Tập 24 - Trang 1241-1263 - 2003
G. Scalabrin, G. Cristofoli
The present work focuses on the development of a viscosity equation η=η(ρ,T) for propane through a multilayer feedforward neural network (MLFN) technique. Having been successfully applied to a variety of fluids so far, the proposed technique can be regarded as a general approach to viscosity modeling. The MLFN viscosity equation has been based on the available experimental data for propane: valida...... hiện toàn bộ
Quantitative Carrier Density Wave Imaging in Silicon Solar Cells Using Photocarrier Radiometry and Lock-in Carrierography
International Journal of Thermophysics - Tập 37 - Trang 1-9 - 2016
Q. M. Sun, A. Melnikov, A. Mandelis
InGaAs camera-based low-frequency homodyne and high-frequency heterodyne lock-in carrierographies (LIC) are introduced for spatially resolved imaging of optoelectronic properties of Si solar cells. Based on the full theory of solar cell photocarrier radiometry (PCR), several simplification steps were performed aiming at the open circuit case, and a concise expression of the base minority carrier d...... hiện toàn bộ
Characterization of Piezoelectric Ceramic Transducer for Accurate Speed-of-Sound Measurement
International Journal of Thermophysics - Tập 31 - Trang 1234-1247 - 2010
H. Lin, K. A. Gillis, J. T. Zhang
Piezoelectric ceramics mounted on the endplates of a cylindrical resonator were used as the source and detector for speed-of-sound measurements. The perturbations of the longitudinal gas modes of the cavity due to the compliance of the diaphragms (10 mm diameter, 0.3 mm thick) and the attached transducers were estimated from first-order perturbation theory. The fractional shift of the resonance fr...... hiện toàn bộ
Residual properties of gases based on a complete virial equation of state
International Journal of Thermophysics - Tập 17 - Trang 1387-1422 - 1996
L. Silberring
A particular virial equation of state is proposed for calculation of residual thermodynamic properties of real gases. It uses an infinite, nontruncated series of terms, but simplified, temperature-independent values of the cirial coefficients are suggested beyond the third. Range limits of applicability are investigated along with their possible extensions. Within these range limits the suggested ...... hiện toàn bộ
Performance and Mechanism Study on Functionalized Phosphonium-Based Deep Eutectic Solvents for CO2 Absorption
International Journal of Thermophysics - - 2023
Yuanyuan Cui, Xiaokang Wang, Xiaochun Zhang, Songsong Chen, Yifan Liu, Junping Zhang, Dong Li, Lei Shi, Xiangping Zhang
Viscosity of binary mixtures. IV. Triethylamine with alkanes and monoalkylamines at 303.15 and 313.15 K
International Journal of Thermophysics - Tập 13 - Trang 817-825 - 1992
S. L. Oswal, S. G. Patel
Viscosities and densities of seven binary mixtures of n-hexane, n-octane, isooctane, n-propylamine, n-butylamine, n-hexylamine, and n-octylamine with triethylamine have been measured at 303.15 and 313.15 K. Deviations of viscosities from a linear dependence on the mole fraction and values of excess Gibbs energy of activation δG *E of viscous flow are attributabl...... hiện toàn bộ
The viscosity of Na2CO3 and K2CO3 aqueous solutions in the range 20–60°C
International Journal of Thermophysics - Tập 2 - Trang 315-322 - 1981
F. A. Gonçalves, J. Kestin
Results of new relative measurements of the density and viscosity of aqueous solutions of Na2CO3 and K2CO3 at atmospheric pressure are presented. The temperature ranged from 20 to 60°C, and the composition ranged from pure water to near saturation. All the data have been correlated with the aid of double polynomials. Owing to some evidence of chemical attack of the borosilicate viscometers, the ac...... hiện toàn bộ
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