Thermal conductivity of alternative fluorocarbons in liquid phase

The thermal conductivity of CFC alternatives HFC-125 and HCFC-141b in the liquid phase

“…(2) [ 15] for the measurement of HCFC-141b with an uncertainty of -I-1%. In, Figure 10 we apparatus with two electrically insulated tantalum wires was employed by Papadaki et al [17], and Assael and Karagiannidis [13]; estimated accuracy is of _ 1%.…”

Thermal diffusivity and ultrasonic velocity of saturated R152a

“…For higher temperatures the data of lbreighith et al are systematically larger and also differ in their temperature In Fig. 4 the thermal conductivity of the saturated liquid measured by different authors [24][25][26] is compared with our data, which have been transformed into the thermal conductivity by 2 = apcp (5) with the isobaric heat capacity measured by Nakagawa [22] and the density proposed by McLinden [20]. All data sets are found to be consistent within _+ 2.5 %.…”

A Multiparameter Thermal Conductivity Equation for 1,1-Difluoroethane (R152a) with an Optimized Functional Form

“…In fact, apart from a couple of older sets [30,34], all the data measured with the transient hot wire technique [18,20,21,22,32] are included in the primary sets; this is not surprising, because the transient hot wire technique is considered the most reliable one for the measurement of the thermal conductivity of fluids. Also other datasets obtained with different versions of the hot wire technique [19,31] are primary sets.…”