Curvature dependence of Henry's law constant and nonideality of gas equilibrium for curved vapor–liquid interfaces

Wang, Xian; Guo, Zhenjiang; Liu, Zhi Ping

doi:10.1002/aic.16604

Cited by 7 publications

(6 citation statements)

References 38 publications

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“…14 where f 1 is the fugacity of the refrigerant; φ 1 is the fugacity coefficient of the refrigerant; γ 1 * is the asymmetric activity coefficient of the refrigerant, which is equal to 1 for dilute solutions. 32 Owing to the extremely low vapor pressure of lubricants, the vapor mole fraction of R32 (y 1 ) is equal to 1. Therefore, when the liquid phase mole fraction of refrigerant (x 1 ) approaches to 0, Henry's constant is calculated as…”

Section: Resultsmentioning

confidence: 99%

“…To further evaluate the solubility behavior, we calculated the Henry’s constants of R32 in both lubricants at different temperatures. For the refrigerant/lubricant mixture, at a given temperature T and pressure p , the Henry’s constant (He 1 ) for refrigerant is expressed as where f 1 is the fugacity of the refrigerant; φ 1 is the fugacity coefficient of the refrigerant; γ 1 * is the asymmetric activity coefficient of the refrigerant, which is equal to 1 for dilute solutions . Owing to the extremely low vapor pressure of lubricants, the vapor mole fraction of R32 ( y 1 ) is equal to 1.…”

Section: Resultsmentioning

confidence: 99%

“…we calculated the Henry's constants of R32 in both lubricants at different temperatures. For the refrigerant/lubricant mixture, at a given temperature T and pressure p, the Henry's constant (He 1 ) for refrigerant is expressed as32…”

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confidence: 99%

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Solubilities of R32 in Polyol Ester and Polyvineyl Ether from 278.15 to 348.15 K

Jia

Wang

Hu³

et al. 2020

J. Chem. Eng. Data

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Difluoromethane (R32) as a refrigerant with zero ozone depletion potential and low global warming potential has received extensive attention in the refrigeration industry. The phase behavior of refrigerant/lubricant mixtures has a critical effect on the performance and operation safety in a compression-refrigeration system. Using the isochoric saturation method, the solubilities of refrigerant R32 in POE75 and in PVE68 lubricant were measured from 278.15 to 348.15 K. The results indicate that there is no sediment, no color change, and no stratification during the whole experiment. The nonrandom two-fluid equation was used to correlate the experimental data. For both oils, solubilities of R32 increase with the decrease of temperature and increase of pressure. R32 is more soluble in PVE than in POE. In addition, the Henry's constants were calculated for R32 in both oils at different temperatures.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Solubilities of R32 in Polyol Ester and Polyvineyl Ether from 278.15 to 348.15 K

Jia

Wang

Hu³

et al. 2020

J. Chem. Eng. Data

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“…Instead of solving simultaneous first-order ordinary equations [ 10 ], algebraic equations explicitly gain deep insight into mechanisms of length and maximum radius of lotus-type or single pores. Henry's law constants are allowed to be different at the bubble cap and top free surface, since the latter is higher than the former due to a decrease in surface curvature [ 23 ]. Solidification rates, mass transfer coefficients and partition coefficients can be varied during solidification.…”

Section: Resultsmentioning

confidence: 99%

Parametric study of lotus-type pore shape in solid subject to Henry's laws at interfaces

Lee¹,

Wei²

2023

Heliyon

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“…Controlling fabrication of lotus-type porous materials involves adjusting parameters such as the imposed pressures of solute gases and the ambient [8,11]. As a consequence, analysis of lotus-type pores thus requires consideration of physico-chemical interfacial equilibrium constants, including Henry's and Sieverts' laws constants at liquid-gas interfaces, which are influenced by temperature, pressure, solute and solvent types, chemical reactions [14], and the curvature of the liquid-gas interface [15]. Hsiao et al [16] showed that an increase in the Henry's law constant at the cap decreases concentration at the cap.…”

Section: Introductionmentioning

confidence: 99%

Interfacial physico-chemical equilibrium control of lotus-type pore formation in solid

Ou,

Wei

2024

Phys. Scr.

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This study presents a challenging analysis of interfacial equilibrium conditions that control the evolution of lotus-type pores in both metals and nonmetals during solidification. It incorporates Henry’s or Sieverts’ law, affecting solute transfer at the cap and top free surface, and pore evolution. The significance of the directional and lightweight characteristics of lotus-type porous materials makes them vitally important in functional heat sinks, energy absorption, biomedical devices, and other applications. The study extends previous solute transfer models based on solute concentration deviations in the liquid from the top surface and convection-affected segregation at the advancing liquid-solid interface by further considering the effects of interfacial equilibrium conditions on pore development. Typical data selected for the dimensionless Henry’s law constant at the cap and top free surface is 0.175, while the Sieverts’ law constant at the cap and top free surface is 0.03. MATLAB Simulink and Simscape (version R2020b) with the solver ode113 are utilized to solve the resulting simultaneous system of unsteady first-order differential equations. The results show that the size of lotus-type pores increases as the Henry’s law constant at the cap decreases while the Henry's law constant at the top free surface increases. Similar results are observed for Sieverts’ law. Lotus-type pores readily form as the Henry’s law constant at the cap increases while that at the top free surface decreases. The lotus pore length can also be determined and interpreted algebraically using solute content conservation. The model's predictions closely match analytical findings previously validated by experimental data.

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Curvature dependence of Henry's law constant and nonideality of gas equilibrium for curved vapor–liquid interfaces

Cited by 7 publications

References 38 publications

Solubilities of R32 in Polyol Ester and Polyvineyl Ether from 278.15 to 348.15 K

Solubilities of R32 in Polyol Ester and Polyvineyl Ether from 278.15 to 348.15 K

Parametric study of lotus-type pore shape in solid subject to Henry's laws at interfaces

Interfacial physico-chemical equilibrium control of lotus-type pore formation in solid

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