Thermodynamic properties calculation of air – water vapor mixtures thermal plasmas

Kagoné, Abdoul Karim; Nièssan, Kohio; Yaguibou, Wêpari Charles; Koalaga, Zacharie; Zougmoré, François

doi:10.4314/gjpas.v24i1.5

Glo Jnl Pure Appl Sci

2018

DOI: 10.4314/gjpas.v24i1.5

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Thermodynamic properties calculation of air – water vapor mixtures thermal plasmas

Abdoul Karim Kagoné¹,

Kohio Nièssan²,

Wêpari Charles Yaguibou³

et al.

Abstract: Knowledge of air-water vapor mixtures thermal plasmas thermodynamic properties is important to estimate the performances of electrical arc cutting in this gas by a circuit breaker. In this paper, air-water vapor mixtures thermal plasmas thermodynamic properties are calculated in a temperature range from 5000K to 30000K. The calculations are carried out by supposing local thermodynamic equilibrium at pressure of 1; 5 and 10 atm. The obtained results show the influence of the water vapor initial proportion but a… Show more

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Cited by 2 publications

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Transport Coefficients of Air - PMMA Mixtures Thermal Plasmas

Karim¹,

Nièssan²,

Charles³

et al. 2020

AJMSE

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The transport coefficients of Air-PMMA mixtures thermal plasmas is important to estimate the performances of cutting of the electrical arc in this gas by a circuit breaker. In this paper, Air-PMMA mixtures thermal plasmas dynamical viscosity, thermal and electrical conductivities coefficients are calculated in a temperature range from 5000K to 30000K. The calculations are made by supposing thermodynamic equilibrium at pressure of 1 bar to 10 bar. The results of the calculations show the influence of the initial proportion of PMMA but also that of the pressure on the mixture plasma transport coefficients. As the efficiency of the breaking of the electric current by the circuit breaker depends closely on the thermal and electrical characteristics of the extinguishing medium, this extinguishing medium should have a high thermal conductivity and an electrical conductivity varying rapidly with temperature. The plasma of the mixture constituted by 80% of air and 20% of PMMA presents at first sight best characteristics for the breaking of electric current. It has the highest thermal conductivity peak among the plasmas of the mixtures studied.

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Transport Coefficients of Air - PMMA Mixtures Thermal Plasmas

Karim¹,

Nièssan²,

Charles³

et al. 2020

AJMSE

View full text Add to dashboard Cite

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Study of the Thermodynamic Properties of Thermal Plasmas of Fluoroalkylamine-Air Mixtures

Ibrahim¹,

Nièssan²,

Charles³

et al. 2023

AMPC

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Knowledge of thermodynamic properties as well as parameters such as energy density and power flow is important for modeling thermal plasmas of fluoroalkylamine-air mixtures. In this paper, these thermodynamic properties of fluoroalkylamine-air mixture plasmas are calculated in a temperature range of 500 K to 20,000 K at atmospheric pressure and local thermodynamic equilibrium (LTE). The Gibbs free energy minimization method is used to determine the chemical equilibrium compositions of the plasmas that are needed to calculate the thermodynamic properties. These thermodynamic properties are then used to calculate the energy density and power flow of these plasmas. The variation of the energy density is related to the variations of the density and mass enthalpy. We notice that, this energy density increases with the percentage of air in the mixture for temperatures higher than 7000 K. The power flow, which depends also on density, enthalpy mass and sound speed, increases with the percentage of air in the same temperature range. Energy density and power flow results show that increasing air percentage in the mixture can be more interesting for damaging gaseous chemical species such as CF 2 , CO, HCN, and HF appearing at low temperatures with high concentrations.

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Thermodynamic properties calculation of air – water vapor mixtures thermal plasmas

Cited by 2 publications

References 17 publications

Transport Coefficients of Air - PMMA Mixtures Thermal Plasmas

Transport Coefficients of Air - PMMA Mixtures Thermal Plasmas

Study of the Thermodynamic Properties of Thermal Plasmas of Fluoroalkylamine-Air Mixtures

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