Measurement and Correlation of the Thermal Conductivity of cis-1,1,1,4,4,4-hexafluoro-2-butene

Abstract

New experimental data for the thermal conductivity of cis-1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz(Z)) are reported for vapor, liquid and supercritical states. These data were obtained with transient hot-wire apparatus over the temperature range from 192 K to 498 K and at pressures from 0.05 MPa to 69 MPa. These data were used to develop a wide-range correlation for the thermal conductivity of the vapor, liquid, and supercritical fluid. The experimental data reported here have an uncertainty of 1 % for the liquid and supercritical regions (densities above 600 kg•m −3 ), 1.5 % for vapor and supercritical regions (pressures greater than or equal to 1 MPa and densities less than 200 kg•m −3 ), 3 % for supercritical states (densities between 200 kg•m −3 and 600 kg•m −3 ), and 3 % for vapor and supercritical states (pressures below 1 MPa). The thermalconductivity correlation developed in this work is estimated to have an expanded relative uncertainty, at a 95 % confidence level, ranging from approximately 1.4 % to 4.2 % depending on the temperature and pressure, with larger uncertainties in the critical region.

Thermal Conductivity of Pure Fluids and Multicomponent Mixtures Using Residual Entropy Scaling with PC-SAFT—Application to Refrigerant Blends

“…(a) Deviations from experimental data ,, as a function of reduced pressure for three refrigerants at T r = 0.96–0.97. (b) RES and ECS deviations for R-134a as a function of reduced pressure at T r = 0.97.…”

Entropy, Heat Capacity, and Thermal Conductivity of trans-1,1,1,4,4,4-Hexafluoro-2-butene [R1336mzz(E)] Derived from the Gaseous Sound Speed Measurement

“…Although the calculation of thermal conductivity through eqs – is so complicated that it is difficult to specify a cause of the large systematic deviations, the correlation models involving the density such as eqs – or possibly yield a different estimation for the contribution to the thermal conductivity of R1336mzz(E). On the one hand, Perkins et al reported that their measurements of thermal conductivities for R1336mzz(Z) were systematically 10 × 10 –2 higher than the measurements by Alam et al, which were obtained by using the same apparatus as Mondal et al Therefore, the third-party measurements for thermal conductivity of R1336mzz(E) should be required to rightly explain the reproducibility or validity for the correlation models in eqs –.…”

Experimental and Theoretical Research on the Saturated Liquid Thermal Conductivity of HFO-1336mzz(E)

“…The experimental data of the saturated liquid thermal conductivity for HFO-1234ze­(E) were obtained by Gerebenkov et al and Perkins and Huber, respectively. The vapor, superheat liquid, liquid, and supercritical states thermal conductivities of HFO-1336mzz­(Z) were measured by Alam et al and Perkins and Huber . However, the saturated liquid thermal conductivity data of HFO-1336mzz­(E) have not been reported so far.…”

“…The vapor, superheat liquid, liquid, and supercritical states thermal conductivities of HFO-1336mzz(Z) were measured by Alam et al 5 and Perkins and Huber. 35 However, the saturated liquid thermal conductivity data of HFO-1336mzz(E) have not been reported so far. It is well known that the saturated liquid thermal conductivity of HFO refrigerants is of great practical significance.…”