Thermal transport properties

Since air has relatively poor thermal transport properties when compared to water, the air cooled heat exchanger could have considerably more heat transfer surface area. A large space requirement may result. 

Weber WJ, Griffin CW, and Bates JL. Effects of cation substitution on electrical and thermal transport properties of Y0rO3 and LaCr03. J. Am. Ceram. Soc. 1987 70 265-270. 

All trap-spectroscopic techniques that are based on thermal transport properties have in common that the interpretation of empirical data is often ambiguous because it requires knowledge of the underlying reaction kinetic model. Consequently, a large number of published trapping parameters—with the possible exception of thermal ionization energies in semiconductors—are uncertain. Data obtained with TSC and TSL techniques, particularly when applied to photoconductors and insulators, are no exceptions. 

Reviews of thermal transport properties have been given by Hands15 and Hands and Hamilton16 which discuss the general theory and also describe a number of test methods. 

In the previous section we computed thermal transport coefficients for a water cluster whose size is reasonably similar to that of a typical globular protein. The calculation of thermal transport properties of proteins turns out not to be so simple. For one thing, there is considerable computational and experimental evidence to suggest that energy transport in proteins is non-Brownian. 

CEA requires two types of data that are common to all problems thermodynamic data and thermal transport property data. These two data sets include approximately 1340 gaseous and condensed species as reaction products and thermal transport property data for 155 gaseous species. The data sets may be extended or edited by the user. 

Thermal transport properties of rubber depend not only on the temperature but also on the type of rubber and the type and quantity of filler. It is generally thought that they are not greatly affected by vulcanization [5],... 

Carbon, whether in amorphous or graphitic form, has a much higher conductivity and diffusivity than rubber, and the addition of carbon black to a rubber almost invariably increases the values of the thermal transport properties at room tanperature. However, at higher temperatures, values for the gum in some cases exceed those of the filled compounds. Unlike the heat capacity, the resultant conductivity and diffusivity of a filled material cannot be calculated on a simple volume additivity basis. 

The diermal conductivity contrast image obtained by scanning thermal microscopy represents a convolution of the true thermal transport properties of the specimen with artefacts arising from changing tip-sample thermal contact area caused by any surface roughness of the specimen [48]. When the probe encounters a depression on the surface, the area of contact between the tip and sample increases, resulting in increased heat flux from the tip to the sample. More power is required to maintain the tip temperature at the set-point value and... 

The thermal properties are conductivity, diffusivity, and specific heat. Other properties are sometimes included under this title but thermal expansion, transition points, low temperature properties, and heat aging are more properly the effects of temperature (Chapter 12). Thermal analysis in all its various forms is also a study of the effect of temperature rather than measurements concerning the transport of heat, although thermal analysis techniques can be used to measure thermal transport properties. 

D. Hands, The thermal transport properties of polymers. Rubber Chem. Technol. 50,480-522. 

CALCULATING THERMAL TRANSPORT PROPERTIES DURING AN OTTO CYCLE COMPRESSION. PH.D. THESIS. 

Hone J, Llaguno MC, Nemes NM, Johnson AT, Fischer JE, Walters DA, et al. Electrical and thermal transport properties of magnetically aligned single wait carbon nanotube films. Appl Phys Lett 2000 77 666-8. 

Mandelis has reviewed photothermal TA techniques. Thermal waves may be optically induced in solid samples by modulated irradiation. These thermal waves then interact directly with the sample and such interaction is detected by suitable sensors. Acoustic waves may be simultaneously induced and detected. These techniques have specialized application to solid-state systems to determine thermal transport properties such as thermal conductivity, diffusivity/effusivity, and specific heat capacity. These techniques are of particular significance in the determination of mechanisms of solid-state phase transitions. 

Hemberger, F., Weis, S., Reichenauer, G. and Ebert, H.P., Thermal Transport Properties of Functionally Graded Carbon Aerogels. International Journal of Thermophysics, 2009. 30(4) p. 1357-1371 Heinemann, U., Caps, R. and Fricke, J., Radiation-conduction interaction An investigation on silica aerogels. International Journal of Heat and Mass Transfer, 1996. 39(10) p. 2115-2130. 

Jin, R., Zhou, Z.X., Mandrus, D., et al The effect of annetiling on the electrical and thermal transport properties of macroscopic bundles of long multi-wall carbon ntmotubes. Phys. B... 

Owing to the excellent thermal conductivity of CNTs, integration of CNTs drastically enhances the thermal transport properties, which makes possible its usage as printed circuit boards, connectors, thermal interface equipments, heat sinks, and other high performance thermal management system (Ibrahim et al. 2012 Xie et al. 2013). 

Safdari M, Al-Haik MS (2013) Synergistic electrical and thermal transport properties of hybrid polymeric nanocomposites based on carbon nanotubes and graphite nanoplatelets. Carbon 64 111-121... 

Suryanarayanan, R., Koyama, K., and Kobayashi, N. (2011) Effect of pressure on the magnetic, transport, and thermal-transport properties of the electron-doped manganite CaMnl— Sb, 03. Phys. Rev. B, 83, 054437. 

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