Thermal Conductivity of Ammonia in a Large Temperature and Pressure Range Including the Critical Region

1984 ◽  
Vol 88 (4) ◽  
pp. 422-427 ◽  
Author(s):  
R. Tufeu ◽  
D. Y. Ivanov ◽  
Y. Garrabos ◽  
B. Le Neindre
Keyword(s):  
Thermal Conductivity ◽  
Critical Region ◽  
Pressure Range ◽  
Large Temperature ◽  
Temperature And Pressure

Temperature and Pressure Dependences of the Effective Thermal Conductivity of Granites

2020 ◽  
Vol 84 (9) ◽  
pp. 1144-1146
Author(s):  
S. N. Emirov ◽  
A. A. Aliverdiev ◽  
V. D. Beybalaev ◽  
A. A. Amirova ◽  
R. M. Aliev ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Temperature And Pressure

scholarly journals Effects of pressure and temperature on thermal contact resistance between different materials

2015 ◽  
Vol 19 (4) ◽  
pp. 1369-1372 ◽  
Author(s):  
Zhe Zhao ◽  
Hai-Ming Huang ◽  
Qing Wang ◽  
Song Ji
Keyword(s):  
Thermal Conductivity ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Experimental Approach ◽  
Phenolic Resin ◽  
Thermal Conductivity Coefficient ◽  
Thermal Contact ◽  
Carbon Composites ◽  
Interfacial Temperature ◽  
Temperature And Pressure

To explore whether pressure and temperature can affect thermal contact resistance, we have proposed a new experimental approach for measurement of the thermal contact resistance. Taking the thermal contact resistance between phenolic resin and carbon-carbon composites, cuprum, and aluminum as the examples, the influence of the thermal contact resistance between specimens under pressure is tested by experiment. Two groups of experiments are performed and then an analysis on influencing factors of the thermal contact resistance is presented in this paper. The experimental results reveal that the thermal contact resistance depends not only on the thermal conductivity coefficient of materials, but on the interfacial temperature and pressure. Furthermore, the thermal contact resistance between cuprum and aluminum is more sensitive to pressure and temperature than that between phenolic resin and carbon-carbon composites.

Competing Channels in the Propene + OH Reaction: Experiment and Validated Modeling over a Broad Temperature and Pressure Range

2011 ◽  
Vol 225 (11-12) ◽  
pp. 1271-1291 ◽  
Author(s):  
Claudia Kappler ◽  
Judit Zádor ◽  
Oliver Welz ◽  
Ravi X. Fernandez ◽  
Matthias Olzmann ◽  
...  
Keyword(s):  
Pressure Range ◽  
Temperature And Pressure

Equilibrium model for the interpretation of the conduction properties of metal–ammonia solutions

1977 ◽  
Vol 55 (11) ◽  
pp. 2211-2216 ◽  
Author(s):  
S. Hahne ◽  
P. Krebs ◽  
U. Schindewolf
Keyword(s):  
Electrical Conductivity ◽  
Pressure Range ◽  
High Mobility ◽  
Solvation Number ◽  
Free Electrons ◽  
Solvated Electrons ◽  
Entire Concentration Range ◽  
Pressure Coefficients ◽  
Temperature And Pressure ◽  
Conduction Properties

The electrical conductivity of metal–ammonia solutions can be described by an equilibrium of solvated electrons of low mobility and of free electrons of high mobility. With proper choice of the equilibrium constant and its temperature and pressure dependence and of the solvation number of the solvated species the experimental conductivities can be matched in the temperature and pressure range from 240 to 420 K and up to 1000 bar over the entire concentration range from 0.1 mol/ℓ to saturation, also fitting the extrema of the temperature and pressure coefficients of the conductivity around 1 mol/ℓ.

scholarly journals Thermodynamic modeling of solid solubility in supercritical carbon dioxide: Comparison between mixing rules

2013 ◽  
Vol 19 (3) ◽  
pp. 389-398 ◽  
Author(s):  
Hadi Baseri ◽  
Ali Haghighi-Asl ◽  
Nader Lotfollahi
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Thermodynamic Modeling ◽  
Pressure Range ◽  
The Other ◽  
Mixing Rules ◽  
Calculation Results ◽  
Temperature And Pressure ◽  
Robinson Equation ◽  
Supercritical Carbon

In this paper, Peng Robinson equation of state is used for thermodynamic modeling of the solubility of various solid components in the supercritical carbon dioxide. Moreover, the effects of three mixing rules of Van der Waals mixing rules, Panagiotopoulos and Reid mixing rules and modified Kwak and Mansoori mixing rules on the accuracy of calculation results were studied. Good correlations between calculated and experimental data were obtained in the wide temperature and pressure range. A comparison between used models shows that modified Kwak and Mansoori mixing rules give better correlations in comparison with the other mixing rules.

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