Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2)
Thermal conductivity measurements of eight binary refrigerant mixtures were conducted in the homogeneous liquid and vapour phases with the transient hot-wire technique. The temperature range of the measurements spanned from (224.3 to 386.6) K with pressures ranging between (1.0 and 6.5) MPa. The bin...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
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Elsevier
2020
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| Online Access: | http://purl.org/au-research/grants/arc/IC150100019 http://hdl.handle.net/20.500.11937/80525 |
| _version_ | 1848764226344058880 |
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| author | Kim, Dongchan Yang, Xiaoxian Arami-Niya, Arash Rowland, Darren Xiao, Xiong Al Ghafri, Saif ZS Tsuji, Tomoya Tanaka, Yukio Seiki, Yoshio May, Eric F |
| author_facet | Kim, Dongchan Yang, Xiaoxian Arami-Niya, Arash Rowland, Darren Xiao, Xiong Al Ghafri, Saif ZS Tsuji, Tomoya Tanaka, Yukio Seiki, Yoshio May, Eric F |
| author_sort | Kim, Dongchan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Thermal conductivity measurements of eight binary refrigerant mixtures were conducted in the homogeneous liquid and vapour phases with the transient hot-wire technique. The temperature range of the measurements spanned from (224.3 to 386.6) K with pressures ranging between (1.0 and 6.5) MPa. The binary mixtures were equimolar (R125 + R32), (R32 + R134a), (R32 + CO2), (R125 + R134a), (R125 + CO2), (R134a + R1234yf), (R134a + CO2) and (R1234yf + CO2). Additionally, two multi-component mixtures, (R32 + R1234yf + CO2) and (R32 + R1234yf + R134a + R125 + CO2), were investigated. The transient hot-wire apparatus was validated with measurements of pure CO2 in the liquid and vapour regions. The relative combined expanded uncertainty (k = 2) in the experimental thermal conductivity was on the order of 2.0%. The relative deviations of the measured thermal conductivities in the vapour phase from those calculated using the extended corresponding states (ECS) model with default binary interaction parameters (BIPs), as implemented in the software REFPROP 10, were between (−12 and +8) %, while those in the liquid phase were between (−15 and +4) %. The new experimental data were used to tune the BIPs in the ECS model. Significant improvements were observed especially in the liquid phase of the five-component mixture, with the root-mean-square of the relative difference between the experimental data and the model estimation reduced by a factor of nearly three. |
| first_indexed | 2025-11-14T11:15:59Z |
| format | Journal Article |
| id | curtin-20.500.11937-80525 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:15:59Z |
| publishDate | 2020 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-805252022-08-12T05:16:30Z Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) Kim, Dongchan Yang, Xiaoxian Arami-Niya, Arash Rowland, Darren Xiao, Xiong Al Ghafri, Saif ZS Tsuji, Tomoya Tanaka, Yukio Seiki, Yoshio May, Eric F Thermal conductivity measurements of eight binary refrigerant mixtures were conducted in the homogeneous liquid and vapour phases with the transient hot-wire technique. The temperature range of the measurements spanned from (224.3 to 386.6) K with pressures ranging between (1.0 and 6.5) MPa. The binary mixtures were equimolar (R125 + R32), (R32 + R134a), (R32 + CO2), (R125 + R134a), (R125 + CO2), (R134a + R1234yf), (R134a + CO2) and (R1234yf + CO2). Additionally, two multi-component mixtures, (R32 + R1234yf + CO2) and (R32 + R1234yf + R134a + R125 + CO2), were investigated. The transient hot-wire apparatus was validated with measurements of pure CO2 in the liquid and vapour regions. The relative combined expanded uncertainty (k = 2) in the experimental thermal conductivity was on the order of 2.0%. The relative deviations of the measured thermal conductivities in the vapour phase from those calculated using the extended corresponding states (ECS) model with default binary interaction parameters (BIPs), as implemented in the software REFPROP 10, were between (−12 and +8) %, while those in the liquid phase were between (−15 and +4) %. The new experimental data were used to tune the BIPs in the ECS model. Significant improvements were observed especially in the liquid phase of the five-component mixture, with the root-mean-square of the relative difference between the experimental data and the model estimation reduced by a factor of nearly three. 2020 Journal Article http://hdl.handle.net/20.500.11937/80525 10.1016/j.jct.2020.106248 http://purl.org/au-research/grants/arc/IC150100019 http://creativecommons.org/licenses/by-nc-nd/4.0/ Elsevier fulltext |
| spellingShingle | Kim, Dongchan Yang, Xiaoxian Arami-Niya, Arash Rowland, Darren Xiao, Xiong Al Ghafri, Saif ZS Tsuji, Tomoya Tanaka, Yukio Seiki, Yoshio May, Eric F Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title | Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title_full | Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title_fullStr | Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title_full_unstemmed | Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title_short | Thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (HFC-32, HFC-125, HFC-134a), hydrofluoroolefins (HFO-1234yf), and carbon dioxide (CO2) |
| title_sort | thermal conductivity measurements of refrigerant mixtures containing hydrofluorocarbons (hfc-32, hfc-125, hfc-134a), hydrofluoroolefins (hfo-1234yf), and carbon dioxide (co2) |
| url | http://purl.org/au-research/grants/arc/IC150100019 http://hdl.handle.net/20.500.11937/80525 |