Experimental studies of the thermal conductivity of isooctane and n-octanol at elevated temperature and pressure

As isooctane and n-octanol are widely used in many industrial areas, the thermal conductivity data of these fluids is crucial in the energy conversion process. Therefore, obtaining reliable thermal conductivity data is of great significance for industrial applications. The thermal conductivity of isooctane and n-octanol was measured with a transient hot-wire device, which has a relatively expanded uncertainty of 2.0 % with a confidence level of 0.95 ( k =2). The measurement of these two fluids covers the temperature range from 303.15 to 523.15 K and the pressure range from 0.1 to 15 MPa. The experimental data were fitted into a polynomial with AADs and MDs of 0.35 % and 1.08% for isooctane, and 0.38 % and 0.99 % for n-octanol, respectively. This work is expected to supplement the data blank of the thermal conductivity of isooctane and n-octanol and promote their application.