Thermal conductivity of organic liquids

Abstract

A new instrument and technique for determining the thermal conductivity of liquids by the coaxial cylinder method are described. Experimental values of the thermal conductivity, obtained over a broad temperature interval, are compared with the results of other investigators. This paper presents the results of an experimental investigation of the thermal conductivity of toluene, n-heptyl alcohol, dimethylformamide, and formamide.

Measurement of the Thermal Conductivities of Neopentylglycol, 1,1,1-Trihydroxymethylpropane, and Their Mixture in the Temperature Range from 20 °C to Their Supermelting Temperatures

“…Four compounds, glycerol, 1,2-ethanediol, toluene, and heptane, were used as reference substances to calibrate the cell from 20 °C to 90 °C, and four compounds, glycerol, 1,2-ethanediol, decanol, and hexadecane, were used from 90 °C to 200 °C. The thermal conductivities for each of the six reference compounds used in this study were measured with an uncertainty of 2-5% by absolute method, for example, for glycerol by Venart and Krishnamurthy 7 and Rastorguev and Gazdiev, 8 for 1,2-ethanediol by Venart and Krishnamurthy 7 and Riedel, 9 for toluene by Rastorguev and Pugach 10 and Mani and Venar, 11 for heptane by Rastorguev et al 12 and Pittman, 13 for hexadecane by Bogatov et al 14 and Mukhamedzyanov et al, 15 and for decanol by Ganiev 16 and Jobst. 17 The recommended thermal conductivities given by Orcharenko 18 for decanol were directly used in this study, while, for the five other compounds, we obtained the reference values from the literature values by the smoothed best-fit method.…”

Measurement of the Thermal Conductivities of Pentaerythritol, 1,1,1-Tris(hydroxymethyl)ethane, and Their Mixture in the Temperature Range from 20 °C to 200 °C

“…Air, toluene, and 1,1,2,2-tetrachloroethane were used as reference substances to calibrate the cell from 20 °C to 90 °C, and air, decanol, and 1,1,2,2tetrachloroethane were used from 90 °C to 200 °C. The thermal conductivities for each of the six reference compounds used in this study have been reported in the literature with an uncertainty of 2-5% measured by the absolute method, for example, that for toluene by Rastorguev and Pugach 7 and Mani and Venart, 8 that for decanol by Ganiev 9 and Jobst, 10 and that for 1,1,2,2tetrachloroethane by Oshena. 11 The recommended thermal conductivities given by Orcharenko 12 for decanol and given by Vargaftik 13 for air were directly used in this study, while, for the other compounds, we obtained the reference * E-mail: zyzhangti@yahoo.com.…”