Measurements of the Thermal Conductivity of l-Menthol–Decanoic Acid Deep Eutectic Solvents in the Temperature Range from 283.15 to 363.15 K at Pressures up to 15.1 MPa

Abstract

In this work, the thermal conductivities of l-menthol–decanoic acid (Men–DecA) deep eutectic solvents were measured with different mole compositions using a transient hot-wire method. The measured temperature range was 283.15–363.15 K, and the pressure was up to 15.1 MPa. The relative expanded uncertainty of the obtained data was estimated to be ±2% with a confidence level of 0.95 (k = 2). The linear thermal conductivity model was used to correlate the experimental data as a function of the mole fraction of decanoic acid, temperature, and pressure. The average absolute relative deviation and the maximum absolute relative deviation between the experimental values and the calculated results from the model were 0.27 and 1.26%, respectively.

Perspectives on Molecular-Level Understanding of Thermophysics of Liquids and Future Research Directions

“…Data on n-butyl acetate/diethyl ether mixture seem to show a peak at 50/50 weight fraction, but it is unclear if these are experimental errors [21]. Yu et al [147] measured thermal conductivity of L-menthol-decanoic acid deep eutectic solvents as a function of temperature, pressure, and mixture mole concentration for their potential usage in thermal storage. Lmenthol is a solid at room temperature but forms liquid with decanoic acid in a wide range of composition with different melting temperatures, called deep eutectic.…”

Measurement of the Thermal Conductivities of Toluene, Cyclohexane, and Diethyl Ether at Pressures up to 15.1 MPa and Their Binary Mixtures at Pressures 0.1 and 10.1 MPa from 291 to 351 K

“…To ensure the reliability of the equipment, we have used deionized water and toluene as test substances in our previous work. 23 The results show that the equipment operates reliably. Considering the uncertainties of pressure, temperature, and repeatability of measurement, the estimated relative expanded uncertainty is better than 2.0% at the level of confidence of 0.95 (k = 2).…”

“…To ensure the reliability of the equipment, we have used deionized water and toluene as test substances in our previous work . The results show that the equipment operates reliably.…”

Measurement of the Thermal Conductivities of Methyl 2-Methyl-3-nitrobenzoate + Acetonitrile, N-Bromosuccinimide + Acetonitrile, and Methyl 2-Methyl-3-nitrobenzoate + N-Bromosuccinimide + Acetonitrile in the Temperature Range from 300 to 340 K

“…This type of equipment has been repeatedly used in the measurement of liquid thermal conductivities. [14][15]18,20,21 The temperature was controlled by the matching C3300A medium-low temperature circulating bath, and the circulating solution was dimethylsilicon oil. The inside of the instrument was washed with the sample before measurement, then a sample of about 100 mL was added to be tested, and the sample was measured after the temperature was stable to test.…”