Publication:
Thermal Conductivity via Entropy Scaling: An Approach That Captures the Effect of Intramolecular Degrees of Freedom

cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentThermodynamik
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentbrowseThermodynamik
cris.virtual.departmentbrowseThermodynamik
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department96d8e6e1-6361-46c5-ae2c-a84605aadf12
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorHopp, Madlen
dc.contributor.authorMele, Julia
dc.contributor.authorHellmann, Robert
dc.contributor.authorGross, Joachim
dc.date.issued2019-10-02
dc.description.abstractThe thermal conductivity of gases depends strongly on the vibrational and rotational degrees of freedom of the molecule under consideration. Entropy scaling is based on the residual entropy, which does not capture the intramolecular and rotational contributions. This study proposes a model for the thermal conductivity that accounts for these degrees of freedom. We use the Chapman-Cowling approximation, where contributions of internal degrees of freedom to the thermal conductivity of an ideal gas are related to the self-diffusion coefficient. A resulting expression for the thermal conductivity is used as a reference in entropy scaling. We find experimental values for thermal conductivities in the entire fluid range to be (to good approximation) a function of residual entropy only. This study shows that entropy scaling is a strong approximation also for thermal conductivity, provided a suitable expression is chosen for the reference thermal conductivity.
dc.description.versionNA
dc.identifier.doi10.1021/acs.iecr.9b03998
dc.identifier.issn1520-5045
dc.identifier.issn0888-5885
dc.identifier.scopus2-s2.0-85073112926
dc.identifier.urihttps://openhsu.ub.hsu-hh.de/handle/10.24405/14466
dc.language.isoen
dc.relation.journalIndustrial and Engineering Chemistry Research
dc.relation.orgunitUniversität Rostock
dc.rights.accessRightsmetadata only access
dc.titleThermal Conductivity via Entropy Scaling: An Approach That Captures the Effect of Intramolecular Degrees of Freedom
dc.typeResearch article
dspace.entity.typePublication
hsu.peerReviewed
hsu.uniBibliographyNein
oaire.citation.endPage18438
oaire.citation.issue39
oaire.citation.startPage18432
oaire.citation.volume58
Files