Chenyang Zhu

Technical University of Denmark

GasolineCombustionOxygenateVacancy defectRangingAnalytical chemistryCrossoverViscosityWork (thermodynamics)Group contribution methodMathematical economicsIsobaric processPhysical chemistryIonic liquidCalorimeterEconomicsAcentric factorTest dataDipoleOrganic chemistryChemistryMaterials scienceNatural scienceMolar massMolarHeat pumpHomologous seriesEthylene glycolHeptaneDimethyl carbonateCholine chlorideViscosity (programming)Ethyl decanoaten-ButanolEthanolAlkylDeep eutectic solventFoundation (engineering)Ethyl octanoateMethyl DodecanoateEthyl laurateMethyl laurateViscosity measurement1-hexyl-3-methylimidazoliumEthyl Dodecanoate1-ethyl-3-methylimidazolium acetatePolarHigh pressureBasic researchSaturated fatty acidAbsolute rateQuadratic relationMaximum deviationCorrelational studyPolar fluidFlow methodEthyl esterTemperature and pressureResearch groupsExperimental methodsSupplementary dataCalculated dataMole fractionAtmospheric temperature rangeBinary numberHeat transferArtificial neural networkRelative standard deviationBiodieselCarbon dioxideNitrogenEquation of stateOxygenFatty acidArgonMechanicsHeat capacityRefrigerationFlow (psychology)Compressibility factorGreen chemistryActivation energyThermodynamics

18Publications

6H-index

88Citations

Publications 16

Quantification of Dipolar Contribution and Modeling of Green Polar Fluids with the Polar Cubic-Plus-Association Equation of State

#1Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

#2Maogang He (Xi'an Jiaotong University)H-Index: 19

Last. Xiaodong Liang (DTU: Technical University of Denmark)H-Index: 14

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Improving the viscosity and density of n-butanol as alternative to gasoline by blending with dimethyl carbonate

#1Xiangyang Liu (Xi'an Jiaotong University)H-Index: 9

#1Xiangyang Liu (Xi'an Jiaotong University)H-Index: 7

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

view all 6 authors...

Abstract n-Butanol is a promising alternative to gasoline, but has the defect of high viscosity, while dimethyl carbonate (DMC), which is a good additive for gasoline to improve the combustion efficiency, has low viscosity. In this work, DMC is used as additive to reduce the viscosity of n-butanol. The viscosities of DMC + n-butanol binary mixtures were measured from 313.15 K to 343.15 K and at pressures up to 15 MPa over the mole fractions from 0.1 to 0.9. The densities of the mixtures were als...

#1Chenyang ZhuH-Index: 6

#2Xiangyang LiuH-Index: 9

Last. Xiaodong LiangH-Index: 14

view all 5 authors...

Heat capacities are fundamental properties of fluids for heat transfer applications. Accurate data can be generally obtained by experimental methods, which are usually expensive, difficult, and tim...

A Comprehensive Study on Thermophysical Properties of Carbon Dioxide through the Cubic-Plus-Association and Crossover Cubic-Plus-Association Equations of State

#1Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

#2Xiangyang Liu (Xi'an Jiaotong University)H-Index: 15

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

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The applications of carbon dioxide in heat pump and refrigeration systems are based on a good understanding of its thermophysical properties. Equations of state (EoSs) are largely used to describe ...

Experimental Study on Isobaric Molar Heat Capacities of a Deep Eutectic Solvent: Choline Chloride + Ethylene Glycol

#1Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

#2Sa Xue (Xi'an Jiaotong University)H-Index: 4

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

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In this study, a flow calorimeter is used to measure the isobaric molar heat capacities (Cp) of one deep eutectic solvent (DES) containing choline chloride and ethylene glycol at different molar ratios. The experiment is performed at temperatures from 313 to 343 K and pressures up to 25 MPa, while the expanded uncertainties of temperature, pressure, molar fraction, and Cp are estimated to be lower than 0.02 K, 5.0 kPa, 1.4 × 10–4, and 1.28%, respectively. The results show that Cp change linearly...

General Model Based on Artificial Neural Networks for Estimating the Viscosities of Oxygenated Fuels.

#1Xiangyang Liu (Xi'an Jiaotong University)H-Index: 15

#1Xiangyang Liu (Xi'an Jiaotong University)H-Index: 9

Last. Ying Zhang (Xi'an Jiaotong University)H-Index: 12

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Oxygenated fuel is a promising alternative fuel for engines because of the advantage of low emission. In this work, a general model based on back-propagation neural networks was developed for estimating the viscosities of different kinds of oxygenated fuels including esters, alcohols, and ethers, whose input variables are pressure, temperature, critical pressure, critical temperature, molar mass, and acentric factor. The viscosity data of 31 oxygenated fuels (1574 points) at temperatures ranging...

Isobaric molar heat capacities measurement of binary mixtures containing ethyl laurate and ethanol at high pressures

#1Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

#2Feng Yang (Xi'an Jiaotong University)H-Index: 5

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

view all 4 authors...

Abstract A flow calorimeter was used to determine the isobaric molar heat capacities of mixtures containing ethyl laurate and ethanol at temperatures from 313.15 K to 343.15 K and pressures up to 25 MPa. The experimental system was verified by measuring the isobaric molar heat capacities of pure ethanol at different temperatures and pressures, and the relative expanded uncertainty of the measurement results was estimated to be lower than 1.45%. Then, the excess molar heat capacity which characte...

#1Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

#2Feng Yang (Xi'an Jiaotong University)H-Index: 5

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

view all 5 authors...

Abstract A viscosity model was proposed for oxygenated fuel components; it was based on Eyring’s absolute rate theory and a cubic equation of state Soave-Redlich-Kwong. The viscosity was associated with flow energy which could be divided into the activation energy and the vacancy-formation energy, and then a reference state for simplifying the calculation process was introduced in the present model. This work also reported a viscosity database at temperatures from 243.15 K to 413.15 K and pressu...

Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate

#1Xiangyang Liu (Xi'an Jiaotong University)H-Index: 15

#2Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

view all 5 authors...

Abstract An experimental study on the isobaric molar heat capacities of ethyl nonanoate and ethyl dodecanoate was performed at temperatures between 303 K and 393 K and at pressures between 0.1 MPa and 25.2 MPa. An increase of isobaric molar heat capacity with temperature increase was observed, and temperature was found to have a greater effect on isobaric molar heat capacity than pressure. Then the isobaric molar heat capacity data of 18 saturated fatty acid methyl and ethyl esters in literature...

Temperature and pressure dependence of densities and viscosities for binary mixtures of methyl decanoate plus n-heptane

#1Chao Su (Xi'an Jiaotong University)H-Index: 10

#2Chenyang Zhu (Xi'an Jiaotong University)H-Index: 6

Last. Maogang He (Xi'an Jiaotong University)H-Index: 19

view all 6 authors...

Abstract New experimental densities and viscosities data for binary mixtures of methyl decanoate plus n-heptane were reported at temperatures of (298.15, 308.15 and 318.15) K and pressures of (0.1–15) MPa. The expanded uncertainty for density measurement is estimated to be 2 kg m−3 and the relative expanded uncertainty for viscosity measurement is estimated to be 0.03. A fitting equation was proposed to correlate the density of the binary mixture and Grunberg-Nissan equation was used to predict ...

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