Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium.
Accurate thermodynamic property data and models are demanded to reduce the design margins of industrial processes based on these fluids. In this work, measurements of density (ρ), heat capacity (cp), and vapour-liquid equilibrium (VLE) for CO2 + difluoromethane (R32) have been performed by the vibra...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier Ltd.
2023
|
| Subjects: |
| _version_ | 1811132204109004800 |
|---|---|
| author | Xiao, Xiong Tenardi, Liam D. Sadaghiani, Mirhadi S. Sadeghi Pouya, Ehsan Yang, Xiaoxian Al Ghafri, Saif Siahvashi, Arman Tsuji, Tomoya Yukumoto, Atsuhiro Seiki, Yoshio Stanwix, Paul L. May, Eric F. |
| author_facet | Xiao, Xiong Tenardi, Liam D. Sadaghiani, Mirhadi S. Sadeghi Pouya, Ehsan Yang, Xiaoxian Al Ghafri, Saif Siahvashi, Arman Tsuji, Tomoya Yukumoto, Atsuhiro Seiki, Yoshio Stanwix, Paul L. May, Eric F. |
| author_sort | Xiao, Xiong |
| collection | ePrints |
| description | Accurate thermodynamic property data and models are demanded to reduce the design margins of industrial processes based on these fluids. In this work, measurements of density (ρ), heat capacity (cp), and vapour-liquid equilibrium (VLE) for CO2 + difluoromethane (R32) have been performed by the vibrating tube densimeter and the magnetic suspension balance densimeter, the visual cell and gas chromatograph, and the differential scanning calorimeter, respectively. Experiments were conducted over the temperatures ranging from (208.3 to 334.3) K and pressures reaching 10.04 MPa at CO2 concentrations of 0.7, 0.8 and 0.9. The measured data, together with the results reported in literature where applicable, were subsequently applied to regress the binary interaction parameters utilised in the mixture functions of Helmholtz energy model from REFPROP 10 software package. Noticeable improvements have been achieved for the model's ability to represent thermodynamic property data. The most significant achievement exists in density description: compared with the default parameters, the root-mean-square (RMS) deviation has been decreased by half. |
| first_indexed | 2024-09-23T23:59:39Z |
| format | Article |
| id | utm.eprints-105792 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-09-23T23:59:39Z |
| publishDate | 2023 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-1057922024-05-15T07:15:55Z http://eprints.utm.my/105792/ Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. Xiao, Xiong Tenardi, Liam D. Sadaghiani, Mirhadi S. Sadeghi Pouya, Ehsan Yang, Xiaoxian Al Ghafri, Saif Siahvashi, Arman Tsuji, Tomoya Yukumoto, Atsuhiro Seiki, Yoshio Stanwix, Paul L. May, Eric F. TP Chemical technology Accurate thermodynamic property data and models are demanded to reduce the design margins of industrial processes based on these fluids. In this work, measurements of density (ρ), heat capacity (cp), and vapour-liquid equilibrium (VLE) for CO2 + difluoromethane (R32) have been performed by the vibrating tube densimeter and the magnetic suspension balance densimeter, the visual cell and gas chromatograph, and the differential scanning calorimeter, respectively. Experiments were conducted over the temperatures ranging from (208.3 to 334.3) K and pressures reaching 10.04 MPa at CO2 concentrations of 0.7, 0.8 and 0.9. The measured data, together with the results reported in literature where applicable, were subsequently applied to regress the binary interaction parameters utilised in the mixture functions of Helmholtz energy model from REFPROP 10 software package. Noticeable improvements have been achieved for the model's ability to represent thermodynamic property data. The most significant achievement exists in density description: compared with the default parameters, the root-mean-square (RMS) deviation has been decreased by half. Elsevier Ltd. 2023-05 Article PeerReviewed Xiao, Xiong and Tenardi, Liam D. and Sadaghiani, Mirhadi S. and Sadeghi Pouya, Ehsan and Yang, Xiaoxian and Al Ghafri, Saif and Siahvashi, Arman and Tsuji, Tomoya and Yukumoto, Atsuhiro and Seiki, Yoshio and Stanwix, Paul L. and May, Eric F. (2023) Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. International Journal of Refrigeration, 149 (NA). pp. 260-273. ISSN 0140-7007 http://dx.doi.org/10.1016/j.ijrefrig.2022.11.029 DOI: 10.1016/j.ijrefrig.2022.11.029 |
| spellingShingle | TP Chemical technology Xiao, Xiong Tenardi, Liam D. Sadaghiani, Mirhadi S. Sadeghi Pouya, Ehsan Yang, Xiaoxian Al Ghafri, Saif Siahvashi, Arman Tsuji, Tomoya Yukumoto, Atsuhiro Seiki, Yoshio Stanwix, Paul L. May, Eric F. Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title | Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title_full | Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title_fullStr | Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title_full_unstemmed | Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title_short | Thermodynamic property measurements and modelling of CO2 + difluoromethane (R32): Density, heat capacity, and vapour-liquid equilibrium. |
| title_sort | thermodynamic property measurements and modelling of co2 difluoromethane r32 density heat capacity and vapour liquid equilibrium |
| topic | TP Chemical technology |
| work_keys_str_mv | AT xiaoxiong thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT tenardiliamd thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT sadaghianimirhadis thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT sadeghipouyaehsan thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT yangxiaoxian thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT alghafrisaif thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT siahvashiarman thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT tsujitomoya thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT yukumotoatsuhiro thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT seikiyoshio thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT stanwixpaull thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium AT mayericf thermodynamicpropertymeasurementsandmodellingofco2difluoromethaner32densityheatcapacityandvapourliquidequilibrium |