Equations for calculating the properties of dissociated steam

Aminov, R. Z.; Gudym, A. A.

doi:10.1134/s004060151708002x

Cited by 7 publications

(10 citation statements)

References 2 publications

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“…In the current study, the authors have developed a system of equations to determine the properties of dissociated water steam over a pressure range of 0.1-10 MPa and a temperature range of 2200-3600 K using previously reported tables [4][5][6].…”

Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

“…Vargaftika on the thermophysical properties of gases and liquids [4] at a reference temperature of 0 K. All thermodynamic properties, except for the caloric parameters, do not depend on the reference temperature. Using the standard heat of formation at a temperature of 298.15 [7], the authors compiled tables of caloric parameters starting from 0°C [6]. On the basis of these tables [4][5][6], the authors developed a system of equations for calculating the properties of dissociated water steam over a pressure range of 0.01-10 MPa and a temperature range of 1250-2300 K [9].…”

Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

“…Using the standard heat of formation at a temperature of 298.15 [7], the authors compiled tables of caloric parameters starting from 0°C [6]. On the basis of these tables [4][5][6], the authors developed a system of equations for calculating the properties of dissociated water steam over a pressure range of 0.01-10 MPa and a temperature range of 1250-2300 K [9]. The properties of H2O as a component of the mixture are calculated from previously published equations [10].…”

Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

“…To determine the properties of high temperature dissociated steam within the temperature range 2000-6000 K, previous reports [3][4][5][6] limited the number of components considered to be participating in chemical reactions to six, namely H2, O2, OH, H, O, and H2O.…”

Section: Introductionmentioning

confidence: 99%

“…On this basis, a table was constructed for dissociated water steam starting from 0 K [3,4], with the reference starting from 0°C [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic properties of dissociated steam

Aminov

Gudym

2017

J. Phys.: Conf. Ser.

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Abstract. In connection with the development of hydrogen technologies and the generation of dissociated steam as a result of the oxidation of hydrogen in an oxygen environment, it became necessary to determine the calorific parameters of dissociated steam. In the existing tables, the caloric parameters of dissociated steam are presented at a reference temperature of 0 K. By contrast, the authors have developed tables of dissociated steam using a reference temperature of 0°C, within the pressure range 0.01-20.0 MPa and the temperature range 1250-4000 K, along with a system of equations for the industrial calculation of the properties of dissociated steam within the temperature range 1250-2300 K and pressure range 0.01-10.0 MPa, followed by a temperature range of 2200-3600 K. During the dissociation of steam, a mixture of eight components are formed including hydrogen H, oxygen O, radicals OH and HO2, molecules of hydrogen H2, oxygen O2, steam H2O, and hydrogen peroxide H2O2. All existing tables of the properties of dissociated steam are based on a mixture of six components: H2, O2, OH, H, O, and H2O. For evaluate whether this is an oversimplification, the composition of the mixture comprising all eight components was calculated, taking into account additional chemical reactions for the formation of НО2 and H2O2. At a pressure of 0.01 MPa, the maximum mole fraction of НО2 was 2.8•10 -5 at a temperature of 3000 K, and at a pressure of 10 MPa, the maximum mole fraction was 5•10 -5 at a temperature of 4000 K. The mole fraction of H2O2 was much lower. Thus at temperatures up to 3000 K, calculations of the properties of dissociated steam are restricted to six components.

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Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

Section: Estimated Equations For the Caloric Parameters Of Dissociatementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…On this basis, a table was constructed for dissociated water steam starting from 0 K [3,4], with the reference starting from 0°C [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermodynamic properties of dissociated steam

Aminov

Gudym

2017

J. Phys.: Conf. Ser.

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The effect of the composition of elementary chemical reactions and the uncertainty of the rate constants on the accuracy of calculating the rate of hydrogen oxidation

Aminov

Gudym

2018

J. Phys.: Conf. Ser.

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A large meteoritic event over Antarctica ca. 430 ka ago inferred from chondritic spherules from the Sør Rondane Mountains

et al. 2021

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Large airbursts, the most frequent hazardous impact events, are estimated to occur orders of magnitude more frequently than crater-forming impacts. However, finding traces of these events is impeded by the difficulty of identifying them in the recent geological record. Here, we describe condensation spherules found on top of Walnumfjellet in the Sør Rondane Mountains, Antarctica. Affinities with similar spherules found in EPICA Dome C and Dome Fuji ice cores suggest that these particles were produced during a single-asteroid impact ca. 430 thousand years (ka) ago. The lack of a confirmed crater on the Antarctic ice sheet and geochemical and 18O-poor oxygen isotope signatures allow us to hypothesize that the impact particles result from a touchdown event, in which a projectile vapor jet interacts with the Antarctic ice sheet. Numerical models support a touchdown scenario. This study has implications for the identification and inventory of large cosmic events on Earth.

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Equations for calculating the properties of dissociated steam

Cited by 7 publications

References 2 publications

Thermodynamic properties of dissociated steam

Thermodynamic properties of dissociated steam

The effect of the composition of elementary chemical reactions and the uncertainty of the rate constants on the accuracy of calculating the rate of hydrogen oxidation

A large meteoritic event over Antarctica ca. 430 ka ago inferred from chondritic spherules from the Sør Rondane Mountains

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