An experimental investigation and modelling of the viscosity refrigerant/oil solutions

Zhelezny, Vitaly; Sechenyh, Vitaliy; Semenyuk, Yury; Grebenkov, A.; Beliayeva, O.V.

doi:10.1016/j.ijrefrig.2009.02.013

Cited by 15 publications

(7 citation statements)

References 7 publications

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“…However, there is a lack of theoretical description of the viscosity of liquid mixtures. For the prediction of the viscosity of hydrocarbons and their mixtures, some viscosity models have been given in the literature based on the quantitative structure–property relation and structural additive orthochor value. , Zhelezny et al suggested a model to predict the viscosity of refrigerant oil solutions (ROS), where the pseudocritical temperature of ROS was used. This model is not well applicable for aqueous amine mixtures.…”

Section: Resultsmentioning

confidence: 99%

Experimental Data and Modeling for Viscosity and Refractive Index of Aqueous Mixtures with 2-(Methylamino)ethanol (MAE) and Aminoethylethanolamine (AEEA)

Pandey

Mondal

2019

J. Chem. Eng. Data

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In the present study, the viscosity and refractive index of pure and aqueous 2-(methylamino)ethanol (MAE) and aminoethylethanolamine (AEEA) and an aqueous blend of MAE and AEEA were measured in the temperature range of 293.15–333.15 K with an interval of 5 K at atmospheric pressure. Amine content in aqueous mixtures varied from 0.05 to 0.30 weight fraction. The viscosity of pure components was correlated by Arrhenius-type equation with average absolute deviation percentage (AAD%) values of 1.87 and 2.42 for MAE and AEEA, respectively. Modified Vogel–Tamman–Fulcher equation with AAD% of 1.343 was proposed to correlate the viscosity of pure AEEA. A new equation with respect to temperature was also proposed to correlate the refractive index data of pure MAE and pure AEEA. Viscosity and refractive index data of aqueous MAE, AEEA, and an aqueous blend of MAE and AEEA were associated by newly proposed correlations and maximum AAD% was found to be 0.11 and 0.001 for viscosity and refractive index, respectively. Deviation in viscosity (Δμ) and deviation in refractive index (Δn D) from ideal solution of aqueous MAE and AEEA were correlated by the Redlich–Kister equation, and the maximum standard deviation was calculated to be 0.091 and 0.0012 for MAE and 0.114 and 0.0011 for AEEA, respectively.

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Section: Resultsmentioning

confidence: 99%

Experimental Data and Modeling for Viscosity and Refractive Index of Aqueous Mixtures with 2-(Methylamino)ethanol (MAE) and Aminoethylethanolamine (AEEA)

Pandey

Mondal

2019

J. Chem. Eng. Data

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“…where τ = |ln(T c /T)| is the logarithm of dimensionless temperature, F 1 (τ) and F 2 (τ) are the universal functions, 16,18 and β is the critical exponent as before.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Originally, this approach was developed for nonassociated substances and then extended to refrigerant/oil solutions and a wide class of binary mixtures. The authors suggest operating with the logarithmic form of these equations − where τ = |ln( T c / T )| is the logarithm of dimensionless temperature, F 1 (τ) and F 2 (τ) are the universal functions, , and β is the critical exponent as before.…”

Section: Resultsmentioning

confidence: 99%

Coexistence Curve, Density, and Viscosity for the Binary System of Perfluorohexane + Silicone Oil

et al. 2018

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Mutual solubility (coexistence) curve, density, and dynamic viscosity data have been measured for the binary liquid system Fluorinert FC-72 + 1 cSt silicone oil. Liquid–liquid equilibrium (LLE) data have been obtained by the cloud-point technique with the use of the shadowgraph observation. The measurements of the dynamic viscosity and density of the mixtures have revealed a change in the slope in the temperature dependence at a temperature which corresponds to LLE. The solubility curve from density measurements is in excellent agreement with that estimated by the cloud-point technique. The experimental data along the binodal curve have been analyzed by the extended scaling theory using the mass fraction as the order parameter. The scaling expression for the diameter and width of the coexistence curve is consistent with the experimental data for t < 0.1, where t is the reduced temperature.

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“…The lubricating oil is widely used in the twin-screw compressor in heat pump systems. 14 Since the HTHP system works at a high-temperature range, the discharging refrigerant and lubricating oil temperatures are high, which may decompose the lubricating oil. Therefore, a plate type water-cooled heat exchanger is applied to cool the lubricating oil down to 60 ℃ using the water from the evaporator.…”

Section: Design Of the Hthp Unit And Componentsmentioning

confidence: 99%

Development and field test of a high-temperature heat pump used in crude oil heating

Cao

Jin

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this paper, a high-temperature heat pump (HTHP) is developed and manufactured to replace the traditional oil-fired boiler heater for crude oil heating. It extracts thermal energy from waste hot water separated from the crude oil to provide high-temperature hot water to heat the crude oil. A prototype of the HTHP system is installed in the Jinzhou oil treatment station in Liaoning, China and the field test is conducted for about 6000 h. A typical 144 h of field testing data is analyzed to evaluate the performance of the designed HTHP system. It is observed that the temperature of hot water provided by the HTHP unit varies from 86 C to 95 C throughout the whole operating period and is sufficient for the crude oil heating (80-90 C). The heating capacity and power consumption of the HTHP system varies from 1350 to 1785 kW, and 171 to 197 kW, respectively. The overall system coefficient of performance ranges from 3.5 to 4.4 with an average value of 3.8. Based on the experimental results, a primary energy ratio is introduced to evaluate and compare the economics of the studied HTHP system and oil-fired boiler heater. The comparison shows that the energy consumed by the HTHP unit is only 57% of that consumed by the oil-fired boiler heater. If all traditional oil-fired boiler heaters are replaced by the HTHPs in the Jinzhou oil treatment station, the total yearly energy saving is around 1.12 Â 10 4 tons of equivalent coal which equates to 1.76 Â 10 4 tons of CO 2 emissions.

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An experimental investigation and modelling of the viscosity refrigerant/oil solutions

Cited by 15 publications

References 7 publications

Experimental Data and Modeling for Viscosity and Refractive Index of Aqueous Mixtures with 2-(Methylamino)ethanol (MAE) and Aminoethylethanolamine (AEEA)

Experimental Data and Modeling for Viscosity and Refractive Index of Aqueous Mixtures with 2-(Methylamino)ethanol (MAE) and Aminoethylethanolamine (AEEA)

Coexistence Curve, Density, and Viscosity for the Binary System of Perfluorohexane + Silicone Oil

Development and field test of a high-temperature heat pump used in crude oil heating

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