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Thermal Conductivity of Aqueous K2CO3 Solutions at High Temperatures

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Abstract

Thermal conductivities of five aqueous K2CO3 solutions of (5, 10, 15, 20, and 25) mass-% have been measured with a concentric-cylinder (steady state) technique. Measurements were made at pressures slightly above the vapor saturation curve and at temperatures from (293.15 to 573.15) K. The total uncertainties of the thermal conductivity, temperature, and concentration measurements were estimated to be less than 2%, 30 mK, and 0.02%, respectively. A maximum in the thermal conductivity was found around 413 K. The measured values of thermal conductivity were compared with data reported in the literature and with values calculated from various prediction techniques. New correlation and prediction equations for the thermal conductivity of solutions studied here were obtained from the experimental data as a function of temperature and composition. The average absolute deviation (AAD) between the measured and predicted values of the thermal conductivity is 0.17%.

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Author notes

  1. Ilmutdin M. Abdulagatov

    Present address: Thermophysical Properties Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO, 80305, USA

Authors and Affiliations

  1. Azerbaijan State Oil Academy, Azadlig Ave., Baku, Az1010, 370601, Azerbaijan

    Lala A. Akhmedova-Azizova

  2. Institute for Geothermal Problems of the Dagestan Scientific Center of the Russian Academy of Sciences, 367003 Shamilya Str. 39-A, Makhachkala, Dagestan, Russia

    Ilmutdin M. Abdulagatov

Authors
  1. Lala A. Akhmedova-Azizova
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  2. Ilmutdin M. Abdulagatov
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Correspondence to Ilmutdin M. Abdulagatov.

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Akhmedova-Azizova, L.A., Abdulagatov, I.M. Thermal Conductivity of Aqueous K2CO3 Solutions at High Temperatures. J Solution Chem 38, 1015–1028 (2009). https://doi.org/10.1007/s10953-009-9428-x

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  • DOI: https://doi.org/10.1007/s10953-009-9428-x

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