日本語フィールド
著者：Akio MIYARA, Keishi KARIYA, Soichiro MORI and Ryo AKASAKA題名：Measurements of viscosity of the HFO refrigerants with tandem capillary tubes method発表情報：The 20th EUROPEAN CONFERENCE ON THERMOPHYSOCAL PROPERTIES (ECTP2014) 巻: P.053キーワード：Viscosity, HFO refrigerants概要：In this study, viscosity of refrigerants HFO-1234ze(E) (trans-1,3,3,3-tetrafluoropropene) and HFO-1234ze(Z) (cis-1,3,3,3-tetrafluoropropene) which are candidate for the next-generation refrigerant due to their low global warming potential (GWP), are measured with tandem capillary tubes method. In this method, the test fluid flows under a laminar flow condition and two different length capillary tubes with same diameter are connected in series in order to eliminate the pressure drop at both inlet and outlet of the tube and thus this method enables to measure with better accuracy than the single capillary tube method. HFO1234ze(E) viscosity are measured at subcooled liquid with temperature of between 10 and 80 �C at 2.49 MPa (saturation temperature Tsat = 90 �C) and 3.02 MPa (Tsat = 99.5 �C). Experiments at superheated vapor condition with temperature of 15 to 80 �C at 0.19 MPa (Tsat = 0 �C) are also conducted. HFO1234ze(Z) viscosity are measured at subcooled liquid condition with temperature of between 10 and 80 �C at 0.67 MPa (Tsat = 70 �C), 1.08 MPa (Tsat = 90 �C) and 1.35 MPa (Tsat = 99.5 �C). Figure 1 shows measured viscosities of HFO-1234ze(Z) at subcooled liquid condition.
This study also deals with development of correlation of viscosity based on the experimental data using an extended corresponding states (ECS) model suggested by Huber et al. [1]. The results show that there are good agreement between the predictions and not only the present measurements but also other HFOs data [2]-[4].抄録：In this study, viscosity of refrigerants HFO-1234ze(E) (trans-1,3,3,3-tetrafluoropropene) and HFO-1234ze(Z) (cis-1,3,3,3-tetrafluoropropene) which are candidate for the next-generation refrigerant due to their low global warming potential (GWP), are measured with tandem capillary tubes method. In this method, the test fluid flows under a laminar flow condition and two different length capillary tubes with same diameter are connected in series in order to eliminate the pressure drop at both inlet and outlet of the tube and thus this method enables to measure with better accuracy than the single capillary tube method. HFO1234ze(E) viscosity are measured at subcooled liquid with temperature of between 10 and 80 �C at 2.49 MPa (saturation temperature Tsat = 90 �C) and 3.02 MPa (Tsat = 99.5 �C). Experiments at superheated vapor condition with temperature of 15 to 80 �C at 0.19 MPa (Tsat = 0 �C) are also conducted. HFO1234ze(Z) viscosity are measured at subcooled liquid condition with temperature of between 10 and 80 �C at 0.67 MPa (Tsat = 70 �C), 1.08 MPa (Tsat = 90 �C) and 1.35 MPa (Tsat = 99.5 �C). Figure 1 shows measured viscosities of HFO-1234ze(Z) at subcooled liquid condition.
This study also deals with development of correlation of viscosity based on the experimental data using an extended corresponding states (ECS) model suggested by Huber et al. [1]. The results show that there are good agreement between the predictions and not only the present measurements but also other HFOs data [2]-[4].英語フィールド
Author：Akio MIYARA, Keishi KARIYA, Soichiro MORI and Ryo AKASAKATitle：Measurements of viscosity of the HFO refrigerants with tandem capillary tubes methodAnnouncement information:The 20th EUROPEAN CONFERENCE ON THERMOPHYSOCAL PROPERTIES (ECTP2014) Vol: P.053An abstract：In this study, viscosity of refrigerants HFO-1234ze(E) (trans-1,3,3,3-tetrafluoropropene) and HFO-1234ze(Z) (cis-1,3,3,3-tetrafluoropropene) which are candidate for the next-generation refrigerant due to their low global warming potential (GWP), are measured with tandem capillary tubes method. In this method, the test fluid flows under a laminar flow condition and two different length capillary tubes with same diameter are connected in series in order to eliminate the pressure drop at both inlet and outlet of the tube and thus this method enables to measure with better accuracy than the single capillary tube method. HFO1234ze(E) viscosity are measured at subcooled liquid with temperature of between 10 and 80 �C at 2.49 MPa (saturation temperature Tsat = 90 �C) and 3.02 MPa (Tsat = 99.5 �C). Experiments at superheated vapor condition with temperature of 15 to 80 �C at 0.19 MPa (Tsat = 0 �C) are also conducted. HFO1234ze(Z) viscosity are measured at subcooled liquid condition with temperature of between 10 and 80 �C at 0.67 MPa (Tsat = 70 �C), 1.08 MPa (Tsat = 90 �C) and 1.35 MPa (Tsat = 99.5 �C). Figure 1 shows measured viscosities of HFO-1234ze(Z) at subcooled liquid condition.
This study also deals with development of correlation of viscosity based on the experimental data using an extended corresponding states (ECS) model suggested by Huber et al. [1]. The results show that there are good agreement between the predictions and not only the present measurements but also other HFOs data [2]-[4].An abstract：In this study, viscosity of refrigerants HFO-1234ze(E) (trans-1,3,3,3-tetrafluoropropene) and HFO-1234ze(Z) (cis-1,3,3,3-tetrafluoropropene) which are candidate for the next-generation refrigerant due to their low global warming potential (GWP), are measured with tandem capillary tubes method. In this method, the test fluid flows under a laminar flow condition and two different length capillary tubes with same diameter are connected in series in order to eliminate the pressure drop at both inlet and outlet of the tube and thus this method enables to measure with better accuracy than the single capillary tube method. HFO1234ze(E) viscosity are measured at subcooled liquid with temperature of between 10 and 80 �C at 2.49 MPa (saturation temperature Tsat = 90 �C) and 3.02 MPa (Tsat = 99.5 �C). Experiments at superheated vapor condition with temperature of 15 to 80 �C at 0.19 MPa (Tsat = 0 �C) are also conducted. HFO1234ze(Z) viscosity are measured at subcooled liquid condition with temperature of between 10 and 80 �C at 0.67 MPa (Tsat = 70 �C), 1.08 MPa (Tsat = 90 �C) and 1.35 MPa (Tsat = 99.5 �C). Figure 1 shows measured viscosities of HFO-1234ze(Z) at subcooled liquid condition.
This study also deals with development of correlation of viscosity based on the experimental data using an extended corresponding states (ECS) model suggested by Huber et al. [1]. The results show that there are good agreement between the predictions and not only the present measurements but also other HFOs data [2]-[4].