In this work a new equation for liquid thermal conductivity prediction is proposed; its goal is to overcome the existing relations’ limitations, being reliable for many compounds in a wide temperature range and requiring few parameters to be used. The equation allows thermal conductivity calculation along or near the saturation line by the knowledge of the reduced temperature and two parameters characteristic of the organic family and of the single investigated compound. Also the “golden ratio” appears in the formula and an investigation on this number is carried out, proposing it as a characteristic value of the liquid state. The results of the formula’s test on the best available experimental values of more than 120 organic compounds, belonging to 13 different families (including the most used refrigerants) are presented. In the investigated reduced temperature range (going from the melting point to close the critical temperature, Tr = 0.30 ÷ 0.95) mean absolute deviations between calculated and experimental thermal conductivity data are generally less than 3% and maximum ones usually close to 8%.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4938-5
PROCEEDINGS PAPER
Organic Compounds Thermal Conductivity in the Liquid Phase: A Prediction Method in the Temperature Range From the Melting Point to Near the Critical Temperature
Giovanni Latini,
Giovanni Latini
Universita` Politecnica delle Marche, Ancona, Italy
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Marco Sotte
Marco Sotte
Universita` Politecnica delle Marche, Ancona, Italy
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Giovanni Latini
Universita` Politecnica delle Marche, Ancona, Italy
Marco Sotte
Universita` Politecnica delle Marche, Ancona, Italy
Paper No:
IHTC14-23035, pp. 371-380; 10 pages
Published Online:
March 1, 2011
Citation
Latini, G, & Sotte, M. "Organic Compounds Thermal Conductivity in the Liquid Phase: A Prediction Method in the Temperature Range From the Melting Point to Near the Critical Temperature." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 3. Washington, DC, USA. August 8–13, 2010. pp. 371-380. ASME. https://doi.org/10.1115/IHTC14-23035
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