Thermal Conductivity of Aqueous K2CO3 Solutions at High Temperatures

Autor:	Ilmutdin M. Abdulagatov, Lala A. Akhmedova-Azizova
Rok vydání:	2009
Předmět:	Aqueous solution Biophysics Thermodynamics Biochemistry Temperature measurement Potassium carbonate Absolute deviation chemistry.chemical_compound Thermal conductivity chemistry Thermal Physical and Theoretical Chemistry Saturation (chemistry) Molecular Biology
Zdroj:	Journal of Solution Chemistry. 38:1015-1028
ISSN:	1572-8927 0095-9782
DOI:	10.1007/s10953-009-9428-x
Popis:	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%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d73ccad3f0d7ca156e40bfdf616f2cfe https://doi.org/10.1007/s10953-009-9428-x Zobrazit plný text záznamu Full text from SpringerLink