Viscosities, densities, apparent and partial molar volumes of concentrated aqueous MgSO<sub>4</sub>solutions at high temperatures and high pressures

Abdulagatov, Ilmutdin M.; Azizov, N. D.; Zeinalova, A. B.

doi:10.1080/00319100601089802

Cited by 21 publications

(13 citation statements)

References 88 publications

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“…In general, the qualitative behavior of the present measured density, viscosity, and speed of sound data for all of the geothermal brine samples are just like those of pure water temperature behavior. The same behavior has been observed also for reported data for binary and ternary aqueous salt solutions (see, for example, refs − and − ). As Figures to demonstrate, geothermal fluid properties can be modeled as a few basic primary aqueous salt solutions (depending on the basic component of the geothermal brine) using appropriate mixing rules.…”

Section: Results and Discussionsupporting

confidence: 88%

“…Figures and provide the comparison between the values of density and viscosity predicted by eqs and with the measured values for selected binary and ternary aqueous salt solutions. The differences between the measured and predicted values of density and viscosity are density, (0.01 to 0.30)% for H 2 O + NaCl; (0.18 to 0.33)% for H 2 O + MgSO 4 ; viscosity, (3.6 to 5.1)% for H 2 O + MgSO 4 ; (4.0 to 6.9)% for H 2 O + Na 2 SO 4 . These predictions for density and viscosity for binary and ternary aqueous salt solutions are acceptable for the present model.…”

Section: Results and Discussionsupporting

confidence: 49%

“…The solid line is pure water values calculated from the IAPWS formulation (Huber et al). ×, Abdulagatov et al; ○, Kestin and Shankland; ●, Abdulagatov and Azizov …”

Section: Results and Discussionmentioning

confidence: 99%

“…The solid lines are pure water values calculated from the IAPWS fundamental equation of state (Wagner and Pruß). ×, Abdulagatov et al; ○, Zezin et al; ●, Rogers and Pitzer.…”

Section: Results and Discussionmentioning

confidence: 99%

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Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

et al. 2015

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Volumetric (density), acoustic (speed of sound), and transport (viscosity) properties of natural geothermal fluids from south Russia Geothermal Field have been measured over the temperature range from (278 to 343) K and at atmospheric pressure. The measurements were made using the Anton Paar DMA4500 densimeter and Stabinger SVM3000 viscometer for four geothermal fluid samples from the hot-wells. A sound-speed analyzer (Anton Paar DSA 5000 M) was used to measure the speed of sound and the density of the same geothermal samples. The combined expanded uncertainty of the density, viscosity, and speed of sound measurements at the 95% confidence level with a coverage factor of k = 2 is estimated to be as follows: density, 0.0005% (for DMA 4500), 0.02%, or 0.5 kg•m −3 (for the SVM 3000 viscodensimeter) and 0.01% (for the DSA 5000 M sound-speed analyzer); viscosity, 0.35% (for SVM 3000); and speed of sound, 0.1% (DSA 5000 M). Measured values of density and speed of sound were used to calculate other very important derived thermodynamic properties of the geothermal fluid samples. Measured values of density, viscosity, and speed of sound were used to develop correlation models which reproduced the measured values of density, viscosity, and speed of sound within 0.03%, 2.55%, and 0.06%, respectively. The measured properties at atmospheric pressure have been used as reference values for the prediction of high pressure properties.

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Section: Results and Discussionsupporting

confidence: 88%

Section: Results and Discussionsupporting

confidence: 49%

“…The solid line is pure water values calculated from the IAPWS formulation (Huber et al). ×, Abdulagatov et al; ○, Kestin and Shankland; ●, Abdulagatov and Azizov …”

Section: Results and Discussionmentioning

confidence: 99%

“…The solid lines are pure water values calculated from the IAPWS fundamental equation of state (Wagner and Pruß). ×, Abdulagatov et al; ○, Zezin et al; ●, Rogers and Pitzer.…”

Section: Results and Discussionmentioning

confidence: 99%

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Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

et al. 2015

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“…This model may be used to predict the vapor-pressure of any geothermal fluid sample with the main components of Cl -, Na + , Ca + , K + , SO 4 -2 , S + , and Si + , using only pure water data and concentration of the ion species. Riedel [38] used the same correlation model for the thermal conductivity of multi-component aqueous salt solutions, achieving a good prediction agreement (within 5%) with the experimental data for several aqueous salt solutions [39][40][41][42][52][53][54][55][56][57][58][59][60][61]. Several authors have examined the accuracy and predictive capability of the Riedel's model (see also, review by Horvath [39]).…”

Section: T/k P/kpa T / K P/kpa T / K P/kpamentioning

confidence: 99%

Experimental Vapor-Pressures and Derived Thermodynamic Properties of Geothermal Fluids from Baden-Baden Geothermal Field (Southeastern Germany)

Talybov¹,

Azizova²,

Abdulagatov³

2019

jept

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Background: In the present study, vapor-pressures of three geothermal fluids from Baden-Baden geothermal field (Kirchenstollen, Friedrichstollen, and Murquelle, southeastern region of Germany) were measured over the temperature range of 274-413 K. The combined expanded uncertainty of the temperature and vapor-pressure measurements at 95% confidence level with a coverage factor of k = 2 were estimated to be 0.01 K and 1-3 Pa at low and 10-30 Pa at high temperatures, respectively. The measured values of vaporpressure were used to calculate other crucial derived thermodynamic properties of these geothermal fluid samples, such as enthalpy and entropy of vaporization and the heat capacity. Methods: The measurements were performed using two different methods and experimental apparatus: (1) absolute and differential static method which was used at low

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Thermodynamic Properties of Geothermal Fluids from South Russia: Kayakent and Kizlyar Hot Sources

Abdulagatov

Akhmedova-Azizova

Aliev

et al. 2021

Heat-Mass Transfer and Geodynamics of the Lithosphere

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Viscosities, densities, apparent and partial molar volumes of concentrated aqueous MgSO₄solutions at high temperatures and high pressures

Cited by 21 publications

References 88 publications

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Experimental Vapor-Pressures and Derived Thermodynamic Properties of Geothermal Fluids from Baden-Baden Geothermal Field (Southeastern Germany)

Thermodynamic Properties of Geothermal Fluids from South Russia: Kayakent and Kizlyar Hot Sources

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Viscosities, densities, apparent and partial molar volumes of concentrated aqueous MgSO4solutions at high temperatures and high pressures

Cited by 21 publications

References 88 publications

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Experimental Vapor-Pressures and Derived Thermodynamic Properties of Geothermal Fluids from Baden-Baden Geothermal Field (Southeastern Germany)

Thermodynamic Properties of Geothermal Fluids from South Russia: Kayakent and Kizlyar Hot Sources

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Viscosities, densities, apparent and partial molar volumes of concentrated aqueous MgSO₄solutions at high temperatures and high pressures