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学者姓名：刘志刚
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Abstract ：
Because of the low melting point, low vapor pressure and high thermal stability, ionic liquid (IL) is considered as the green solvents and has been signicantly investigated during the past few years. In this work, a modied free-volume theory is proposed to establish a viscosity model that is used to obtain the values of 29 ILs in the temperate range of 273.15~373.15 K. Comparison the experimental data with the calculated values, the average absolute relative deviation (AARD) is less than 1.22%, the maximum deviation (MD) is less than 3.91%, indicating that the model is successful in correlating the viscosity of IL over wide ranges of temperature. © 2018, Science Press. All right reserved.
Keyword ：
Average absolute relative deviations Calculated values Free-volume theory Green solvents High thermal stability Low melting point Low vapor pressures Viscosity modeling
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| GB/T 7714 | Yang, Fu-Xin , Wang, Xiao-Po , Ma, Qian et al. Viscosity Model For Ionic Liquid Based on the Free-Volume Theory [J]. | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 2018 , 39 (2) : 233-236 . |
| MLA | Yang, Fu-Xin et al. "Viscosity Model For Ionic Liquid Based on the Free-Volume Theory" . | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 39 . 2 (2018) : 233-236 . |
| APA | Yang, Fu-Xin , Wang, Xiao-Po , Ma, Qian , Liu, Zhi-Gang . Viscosity Model For Ionic Liquid Based on the Free-Volume Theory . | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 2018 , 39 (2) , 233-236 . |
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Abstract ：
Due to the limitations of using biodiesel directly or blended with petroleum diesel, alcohols are always employed as the additives to improve the certain properties of biodiesel. In this work, experimental investigations are conducted on the thermophysical properties, especially the density and viscosity, of binary mixtures containing the component of the biodiesel, namely methyl myristate, with higher alcohols, including 1-propanol, 1-butanol and 1-pentanol at atmospheric pressure from 303.15 K to 333.15 K. The Vogel-Fulcher-Tammann equation is introduced to correlate the viscosity. The derived property of thermal expansion coefficient is calculated based on the experimental density. The excess properties are obtained to further understand the interactions between the ester and the alcohols. The positive value of the excess molar volume and negative value of viscosity deviation are observed, indicating that the increasing contribution of the repulsive forces between methyl ester and the alcohols.
Keyword ：
1-Butanol 1-Pentanol 1-Propanol Methyl myristate Thermal expansion coefficient Thermophysical property
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| GB/T 7714 | Yang, Fuxin , Wang, Xiaopo , Tan, Houzhang et al. Experimental investigations on the thermophysical properties of methyl myristate in alcoholic solutions [J]. | FUEL , 2018 , 215 : 187-195 . |
| MLA | Yang, Fuxin et al. "Experimental investigations on the thermophysical properties of methyl myristate in alcoholic solutions" . | FUEL 215 (2018) : 187-195 . |
| APA | Yang, Fuxin , Wang, Xiaopo , Tan, Houzhang , He, Siyuan , Liu, Zhigang . Experimental investigations on the thermophysical properties of methyl myristate in alcoholic solutions . | FUEL , 2018 , 215 , 187-195 . |
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Abstract ：
Air-water two-phase flow in pipeline-risers was investigated in this paper, where the flow structure was divided into two major patterns of stable flow and unstable flow. A flow regime map within the wide range of flow velocity was built up. Experiments revealed the flow characteristics and formation mechanism of irregular flow regime. In pipeline-riser system, the gradual accumulating of liquid phase is the key factor for establishment of the unstable stage; while being unable to fill the liquid reduction caused by occasional cyclic eruptions during the low liquid velocity is the critical factor for establishment of the stable stage. Under moderate and high superficial velocities, with the increase of the superficial gas or liquid velocity, the fluctuation magnitude of differential pressures along the riser and along the horizontal pipe differential pressure first increases and then decreases, while under low superficial velocities, the fluctuation magnitude decreases monotonically. Meanwhile, the corresponding contour maps of differential pressure fluctuations were presented respectively. © 2017, Science Press. All right reserved.
Keyword ：
Air-water two phase flows Critical factors Differential pressures Flow charac-teristics Formation mechanism Horizontal pipes Liquid velocities Superficial velocity
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| GB/T 7714 | Yao, Tian , Guo, Lie-Jin , Liu, Zhi-Gang et al. Experimental Study on Differential Pressure Fluctuations Characteristics of Unsteady Flow Pattern in Pipeline-riser System [J]. | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 2017 , 38 (6) : 1250-1256 . |
| MLA | Yao, Tian et al. "Experimental Study on Differential Pressure Fluctuations Characteristics of Unsteady Flow Pattern in Pipeline-riser System" . | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 38 . 6 (2017) : 1250-1256 . |
| APA | Yao, Tian , Guo, Lie-Jin , Liu, Zhi-Gang , Wu, Quan-Hong . Experimental Study on Differential Pressure Fluctuations Characteristics of Unsteady Flow Pattern in Pipeline-riser System . | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 2017 , 38 (6) , 1250-1256 . |
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Abstract ：
In this paper, a modified three-parameter Lee-Kesler-like corresponding states model is presented to calculate the vapor pressure of pure refrigerants and refrigerant mixtures by using two reference fluids (R13 and R227ea). A new scaling parameter is proposed in the model to substitute for the classical acentric factor. The modified model shows a good accuracy over a wide range of temperatures and especially in the low-temperature region when compared to other Lee-Kesler-like corresponding states models such as Lee-Kesler, Teja, and Estela-Uribe.
Keyword ：
Corresponding State Refrigerant Scaling Factor Vapor Pressure
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| GB/T 7714 | Sun, Yanjun , Wang, Xiaopo , Jin, Liwen et al. Modified Vapor Pressure Model Based on Corresponding-States Principle for Pure and Mixed Refrigerants [J]. | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN , 2017 , 50 (11) : 807-814 . |
| MLA | Sun, Yanjun et al. "Modified Vapor Pressure Model Based on Corresponding-States Principle for Pure and Mixed Refrigerants" . | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 50 . 11 (2017) : 807-814 . |
| APA | Sun, Yanjun , Wang, Xiaopo , Jin, Liwen , Liu, Zhigang . Modified Vapor Pressure Model Based on Corresponding-States Principle for Pure and Mixed Refrigerants . | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN , 2017 , 50 (11) , 807-814 . |
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Abstract ：
In this work, the inversion scheme was used to determine the potential energy surfaces of five polar refrigerant mixtures. The systems studied here are R123-R134a, R123-R142b, R123-R152a, R142b-R134a, and R142b-R152a. The low density transport coefficients of the refrigerant mixtures were calculated from the new invert potentials by the classical kinetic theory. The viscosity coefficient, binary diffusion coefficient, and thermal diffusion factor were computed for the temperature range from 313.15-973.15 K The agreement with the NIST viscosity data demonstrates that the present calculated values are accurate enough to supplement experimental data over an extended temperature range. Correlations of the transport properties were also provided for the refrigerant mixtures at equimolar ratios.
Keyword ：
inversion method polar refrigerant mixture potential energy surface transport coefficient
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| GB/T 7714 | Song, Bo , Wang, Xiaopo , Liu, Zhigang . DETERMINATION OF THE POTENTIAL ENERGY SURFACES OF REFRIGERANT MIXTURES AND THEIR GAS TRANSPORT COEFFICIENTS [J]. | THERMAL SCIENCE , 2017 , 21 (6) : 2851-2858 . |
| MLA | Song, Bo et al. "DETERMINATION OF THE POTENTIAL ENERGY SURFACES OF REFRIGERANT MIXTURES AND THEIR GAS TRANSPORT COEFFICIENTS" . | THERMAL SCIENCE 21 . 6 (2017) : 2851-2858 . |
| APA | Song, Bo , Wang, Xiaopo , Liu, Zhigang . DETERMINATION OF THE POTENTIAL ENERGY SURFACES OF REFRIGERANT MIXTURES AND THEIR GAS TRANSPORT COEFFICIENTS . | THERMAL SCIENCE , 2017 , 21 (6) , 2851-2858 . |
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Abstract ：
Imidazolium-based ionic liquids (ILs) have been widely investigated in the biofuels process. In this work, the experimental densities and viscosities of binary mixtures of IL, 1-octyl-3-methylimidazolium chloride, with aprotic cosolvents (i.e., N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, and pyridine) were studied at temperatures ranging from (303.15 to 353.15) K at atmospheric pressure. The Vogel-Fulcher-Tammann equation is used to correlate the viscosity data. Toward further understanding the influences of cosolvents on the properties of IL, the excess properties of density and viscosity deviations are calculated as well as the energy barrier. The effects of cosolvents on the density and viscosity are discussed.
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| GB/T 7714 | Yang, Fuxin , Ma, Qian , Wang, Xiaopo et al. Influence of Aprotic Cosolvents on the Thermophysical Properties of Imidazolium-Based Ionic Liquid [J]. | JOURNAL OF CHEMICAL AND ENGINEERING DATA , 2017 , 62 (5) : 1628-1638 . |
| MLA | Yang, Fuxin et al. "Influence of Aprotic Cosolvents on the Thermophysical Properties of Imidazolium-Based Ionic Liquid" . | JOURNAL OF CHEMICAL AND ENGINEERING DATA 62 . 5 (2017) : 1628-1638 . |
| APA | Yang, Fuxin , Ma, Qian , Wang, Xiaopo , Liu, Zhigang . Influence of Aprotic Cosolvents on the Thermophysical Properties of Imidazolium-Based Ionic Liquid . | JOURNAL OF CHEMICAL AND ENGINEERING DATA , 2017 , 62 (5) , 1628-1638 . |
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Abstract ：
Imidazolium-based ionic liquids have been attracted enormous attention in making biofuels from biomass. Due to the high viscosity, the organic solvent in general is applied to improve the properties of the ionic liquids. In this work, the promising substances of N,N-dimethylacetamide (DMA), N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO) and pyridine (PYR) are selected to investigate for the ionic liquid of 1-butyl-3methylimidazolium chloride. The kinematic viscosity is measured by an Ubbelohde capillary viscometer at atmospheric pressure (0.0967 MPa) from 303.15 K to 353.15K. The Vogel-Fulcher-Tammann equation is introduced to correlate the viscosity. The experimental results are used to quantitatively analyze the effects on the viscosity of ionic liquid. Toward further understanding the interactions between the ionic liquid and the organic solvents, the viscosity deviation is calculated, and the ideal Grunberg-Nissan equation is performed to check divergence from the ideal. Moreover, Fourier transform infrared spectroscopy (FTIR) is used to study the structure of the sample. (C) 2017 Elsevier B.V. All rights reserved.
Keyword ：
1-Butyl-3-methylimidazolium chloride FAR Kinematic viscosity Organic solvent
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| GB/T 7714 | Yang, Fuxin , Wang, Xiaopo , Tan, Houzhang et al. Improvement the viscosity of imidazolium-based ionic liquid using organic solvents for biofuels [J]. | JOURNAL OF MOLECULAR LIQUIDS , 2017 , 248 : 626-633 . |
| MLA | Yang, Fuxin et al. "Improvement the viscosity of imidazolium-based ionic liquid using organic solvents for biofuels" . | JOURNAL OF MOLECULAR LIQUIDS 248 (2017) : 626-633 . |
| APA | Yang, Fuxin , Wang, Xiaopo , Tan, Houzhang , Liu, Zhigang . Improvement the viscosity of imidazolium-based ionic liquid using organic solvents for biofuels . | JOURNAL OF MOLECULAR LIQUIDS , 2017 , 248 , 626-633 . |
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Abstract ：
The gas-liquid phase equilibrium experimental system based on the isochoric saturation method in the laboratory was improved. The visual equilibrium cell, thermostatic system and magnetic stirring system were modified. In order to check the reliability and accuracy of the new system, the phase equilibrium of carbon dioxide and pentaerythritol tetrahexanoate was measured at 303.15 K, the absolute average deviation was 0.95% and the maximum deviation was 2.01% compared with the reference data. The expanded uncertainties of temperature, pressure and mole fraction are 0.03 K, 2.0 kPa, and 3.0%, respectively. Phase equilibria behavior of trans-1, 3, 3, 3-tetrafluoropropene and squalane was determined at temperature range from 283.15 K to 348.15 K. The experimental data were correlated with Peng-Robinson equation of state and van der Waals mixing rule using two interaction parameters. The absolute average deviation between experimental data and calculated values for pressure was 0.88%, and the maximum deviation was 3.80%. In addition, the immiscibility phenomenon for trans-1, 3, 3, 3-tetrafluoropropene and squalane mixtures was found in the temperature range from 283.15 K to 333.15 K. © All Right Reserved.
Keyword ：
Absolute average deviation Experimental system Interaction parameters Peng-Robinson equation of state Squalane Thermostatic systems Trans-1 , 3 , 3 , 3-tetrafluoropropene Van der waals mixing rule
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| GB/T 7714 | Sun, Yanjun , Wang, Xiaopo , Liu, Zhigang et al. Measurement of gas-liquid phase equilibrium for trans-1, 3, 3, 3-tetrafluoropropene and squalane [J]. | Huagong Xuebao/CIESC Journal , 2017 , 68 (8) : 2979-2984 . |
| MLA | Sun, Yanjun et al. "Measurement of gas-liquid phase equilibrium for trans-1, 3, 3, 3-tetrafluoropropene and squalane" . | Huagong Xuebao/CIESC Journal 68 . 8 (2017) : 2979-2984 . |
| APA | Sun, Yanjun , Wang, Xiaopo , Liu, Zhigang , Jin, Liwen . Measurement of gas-liquid phase equilibrium for trans-1, 3, 3, 3-tetrafluoropropene and squalane . | Huagong Xuebao/CIESC Journal , 2017 , 68 (8) , 2979-2984 . |
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Abstract ：
Isobutane (R600a) is widely used in small capacity refrigeration equipment, especially domestic refrigerator. Knowledge of refrigerant absorption in lubricant oil is one of the essential factors for designing refrigeration system and choosing suitable oil. In this work, the liquid mole fractions of R600a in three linear chained pentaerythritol esters (pentaerythritol tetrabutyrate, pentaerythritol tetrahexanoate, and pentaerythritol tetraoctanoate) were measured from 293.15 K to 348.15 K by means of isochoric saturation method. The measured data were modeled using the PR EOS and HVOS mixing rule combined withWilson excess free-energy model. Average relative deviations between the calculated pressure from the model and measured results for R600a + pentaerythritol tetrabutyrate, R600a + pentaerythritol tetrahexanoate, and R600a + pentaerythritol tetraoctanoate systems were 0.74%, 0.90%, and 0.57%, respectively. Maximum relative deviations were 2.13%, 2.91%, and 2.13%, respectively. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
Keyword ：
Absorption Isobutane Lubricant oil Pentaerythritol esters
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| GB/T 7714 | Sun, Yanjun , Wang, Xiaopo , Wang, Dongbo et al. Absorption of isobutane in three linear chained pentaerythritol esters between 293.15 and 348.15 K [J]. | INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID , 2017 , 76 : 118-125 . |
| MLA | Sun, Yanjun et al. "Absorption of isobutane in three linear chained pentaerythritol esters between 293.15 and 348.15 K" . | INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID 76 (2017) : 118-125 . |
| APA | Sun, Yanjun , Wang, Xiaopo , Wang, Dongbo , Jin, Liwen , Liu, Zhigang . Absorption of isobutane in three linear chained pentaerythritol esters between 293.15 and 348.15 K . | INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID , 2017 , 76 , 118-125 . |
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Abstract ：
Ionic liquids have been widely explored in making biofuels from biomass. Ionic liquid generally has high viscosity that would impede the dissolution of biomass. One of the possible ways is to use the organic solvent to lower the viscosity. In this work, experimental studies on the densities and viscosities of binary mixtures are conducted at atmospheric pressure (0.0967 MPa) in the temperature range from 303.15 K to 353.15 K. The mixtures are comprised by ionic liquid of 1-hexyl-3-methylimidazolium chloride and organic solvents of N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide and pyridine. The excess properties are calculated to evaluate the interactions of ionic liquid with organic solvents. The Vogel-Fulcher-Tammann equation along with ideal Grunberg-Nissan equation is introduced to correlate the viscosity values. The results are used to quantitatively analyze the effects of organic solvents on lowering the viscosities of ionic liquid. (C) 2017 Elsevier Ltd.
Keyword ：
1-hexyl-3-methylimidazolium chloride Density Organic solvent Viscosity
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| GB/T 7714 | Yang, Fuxin , Ma, Qian , Wang, Xiaopo et al. Effect of organic solvents on lowering the viscosity of 1-hexyl-3-methylimidazolium chloride [J]. | JOURNAL OF CHEMICAL THERMODYNAMICS , 2017 , 113 : 358-368 . |
| MLA | Yang, Fuxin et al. "Effect of organic solvents on lowering the viscosity of 1-hexyl-3-methylimidazolium chloride" . | JOURNAL OF CHEMICAL THERMODYNAMICS 113 (2017) : 358-368 . |
| APA | Yang, Fuxin , Ma, Qian , Wang, Xiaopo , Liu, Zhigang . Effect of organic solvents on lowering the viscosity of 1-hexyl-3-methylimidazolium chloride . | JOURNAL OF CHEMICAL THERMODYNAMICS , 2017 , 113 , 358-368 . |
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