Thermal Conductivity of Some Organic Liquids

Cecil, O. B.; Munch, R. H.

doi:10.1021/ie51398a028

Cited by 25 publications

(9 citation statements)

References 1 publication

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“…A, ' , one finds a rather systematic trend with the number of external degrees of freedom 3c discussed previously (6, 8). A fairly good representation of this relation is…”

Section: Flexible Moleculessupporting

confidence: 72%

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Thermal conductivity of nonassociated liquids

Bondì

1962

AIChE Journal

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and the void fraction of the bed were plotted against the corresponding Reynolds number, as shown in Figure 4. Only the data of studies in which surface temperatures were measured directly were utilized and include jh values for packed, expanded, and distended beds. No experimental heat transfer factors are presently available for fluidized beds. Again considerable scatter is noted at low Reynolds numbers, due to backmixing effects. The deviations of the in values reported by De Acetis and Thodos (3) can be attributed to the significant conduction and radiation effects which were not accounted for in that study. !The best relationship, which is limited to the region N R s > 20 for which substantial experimental data are available, may be expressed analytically as follows:The thermal conductivity of liquids numerical values, the largest and the coefficients are sufficiently sensitive to composed of nonionized molecules smallest known values differing by less the magnitude of the thermal conduccovers a comparatively small range of than a factor of 10. Yet heat transfer tivity (which is very difficult to meas-*The very similar relation X = (6.96 k/o*18) ( AEV/M where u = liquid volume/molecule, AEv = enerp of vaporizahon, has been derived from a solid Ike model of the liquid state by Altenburg (1).

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“…A, ' , one finds a rather systematic trend with the number of external degrees of freedom 3c discussed previously (6, 8). A fairly good representation of this relation is…”

Section: Flexible Moleculessupporting

confidence: 72%

“…To a first approximation, that is up to about 1,000 atm., this can undoubtedly be predicted from a graph of A* vs. a*. (8) Typical E increments are presented in Table 2 and typical values of 3c are given in Table 3 …”

Section: Limitationsmentioning

confidence: 97%

Thermal conductivity of nonassociated liquids

Bondì

1962

AIChE Journal

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“…for the six liquids, so that a value of 3.1 x 4 ±10% may be used for this class of liquid. The same average value of 3.1 x 10 ~4 ±3% was reported for the analogous organic phosphate liquids (5).…”

supporting

confidence: 81%

“…This is possible for some TAS liquids if the sonic velocity Us is calculated by the bond-increment method. Thus Us = (Rp/ (5) where R is the sum of values for all the bonds in the molecule, taken from tabulations of Lagemann (12) and Weissler (18). Then the ratio of specific heats, 7, may be found from the thermodynamic formula , .…”

Section: Discussionmentioning

confidence: 99%

Thermal Conductivity of Organic Silicates.

Turnbull

1962

J. Chem. Eng. Data

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“…With values below 0.2 W/m • C, the thermal conductivities of the small molecule samples were comparable to other disordered materials like low conducting polymers, as well as common organic liquids [26,27]. After the literature review and to the best of the authors' knowledge, there were no thermal conductivity reference values available for the two amorphous drugs tested in this study.…”

Section: Discussionmentioning

confidence: 71%

Determining Thermal Conductivity of Small Molecule Amorphous Drugs with Modulated Differential Scanning Calorimetry and Vacuum Molding Sample Preparation

Karl

Rantanen

2019

Pharmaceutics

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Thermal conductivity is a material specific property, which influences many aspects of pharmaceutical development, such as processing, modelling, analysis, and the development of novel formulation approaches. We have presented a method to measure thermal conductivity of small molecule organic glasses, based on a vacuum molding sample preparation technique combined with modulated differential scanning calorimetry. The method is applied to the two amorphous model compounds indomethacin and celecoxib. The measured values of below 0.2 W/m °C indicate very low thermal conductivity of the amorphous compounds, within the range of organic liquids and low conducting polymers.

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Thermal Conductivity of Some Organic Liquids

Cited by 25 publications

References 1 publication

Thermal conductivity of nonassociated liquids

Thermal conductivity of nonassociated liquids

Thermal Conductivity of Organic Silicates.

Determining Thermal Conductivity of Small Molecule Amorphous Drugs with Modulated Differential Scanning Calorimetry and Vacuum Molding Sample Preparation

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