Measurement of thermal conductivity of liquid fluorocarbons

Models for viscosity, thermal conductivity, and surface tension of selected pure fluids as implemented in REFPROP v10.0

“…The estimated uncertainty is 5 % at pressures to 20 MPa (the limit of the EOS). Gas-phase thermal conductivity data of Keyes (Keyes, 1954) and the liquid-phase data of Yata et al (Yata, Minamiyama, & Tanaka, 1984), Fellows et al (Fellows, Richard, & Shankland, 1990), and Slusarev (Slusarev, 1979) were used to obtain the coefficients in Table 3, and deviation plots for thermal conductivity are shown in Figures 144 and 145. Parameters for the critical enhancement are presented in Table 4.…”

Saturated liquid thermal conductivity correlations for some new refrigerants

“…The same experimental technique adopted by Grebenkov et al (1994) for HCFCs 125 and 152a shows a considerable negative bias whereas in the case of HFCs 32 and 134a it is not that dominant. The only group that has made measurements on all the refrigerants studied here is Yata et al (1984Yata et al ( , 1989Yata et al ( , 1992Yata et al ( , 1996. The (£) Grebenkov et al, 1994; (᭝) Gross et al, 1992;() Heide and Lippold, 1990; (#) Kim et al, 1993; (᭹) Yata et al, 1992 present correlations fit their data reasonably well for most HCFCs and HFC32 but the agreement with their measurements for other HFCs is varied.…”

“…Several investigators had provided data along the saturation line (e.g. Assael and Karagiannidis, 1995;Fellows et al, 1990;Gross et al, 1990;Gurova et al, 1994;Hoffman et al, 1996;Kim et al, 1993;Perkins et al, 1992;Ross et al, 1990;Sousa et al, 1992;Tsvetkov et al, 1994;Wilson et al, 1992;Yata et al, 1984). The equations for saturated liquid thermal conductivity given by some investigators were used directly (e.g.…”

“…Deviation plots for saturated liquid thermal conductivity of HCFC123 Legend: (᭺) Assael and Karagiannidis, 1993; (᭛) Fellows et al, 1990; (᭡) Gross et al, 1992; (᭝) Gross and Song, 1996; (£) Gurova et al, 1994; (#) Kim et al, 1994; () Tanaka et al, 1996; (ᮀ) Tsvetkov et al, 1992; (᭜) Ueno et al, 1990; (᭹) Yata et al, 1989 Deviation plots for saturated liquid thermal conductivity of HCFC124 Legend: (᭺) Assael and Karagiannidis, 1995; (᭛) Fellows et al, 1990; (£)Yata et al, 1984; (᭹) …”

A new methodology for the determination of transport properties of refrigerants

“…For thermal conductivity: The vertical coaxial cylinder method [39,40], transient hot-wire method [41,42,43,44,45], and transient hot-strip method [46] are the usual methods employed.…”