نتایج جستجو برای: vapor equilibrium

تعداد نتایج: 163856  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2004
koroush khosravi darani hassan sabzyan asghar zeini-isfahani gholamabbas parsafar

in this work, a more accurate prediction of liquid evaporation flux has been achieved. the statistical rate theory approach, which is recently introduced by ward and fang and exact estimation of vapor pressure in the layer adjacent to the liquid–vapor interface have  been used for prediction of this flux. firstly, the existence of an equilibrium layer adjacent to the liquid-vapor interface is c...

Journal: :physical chemistry research 2015
fatemeh fadaei nobandegani mohammad mehdi alavian mehr jalil moghadasi

in this paper, the vapor-liquid equilibrium (vle) properties of polar and nonpolar fluids are modeled by the use of a statistically-based equation of state (eos). the equation of state used in this work is that of ihm-song-mason (ism) eos. an alternative approach is to revise the isothermal integration on liquid. in this respect, a temperature-dependent revision factor b (t) is introduced to th...

Asghar Zeini-Isfahani Gholamabbas Parsafar Hassan Sabzyan, Koroush Khosravi Darani,

In this work, a more accurate prediction of liquid evaporation flux has been achieved. The statistical rate theory approach, which is recently introduced by Ward and Fang and exact estimation of vapor pressure in the layer adjacent to the liquid–vapor interface have  been used for prediction of this flux. Firstly, the existence of an equilibrium layer adjacent to the liquid-vapor interface ...

Journal: :Journal of Chemical Education 1959

Abdorreza Mirhoseni Mohamad Taghi Zafarani Moattar

Accurate vapor-liquid equilibrium data have been obtained for ethyl acetate + 2-propanol and ethyl acetate + ethanol mixtures at 84.8 kPa, and the results are discussed thermodynamically. The vapor-liquid equilibrium data are correlated with redlich-Kister, Margules, Van-Laar and Ortega, equations the parameters and standard deviation of which are calculated and reported. The best correlati...

1999
Gary L. Bertrand

Background The volatility of a compound is its ability to change into a vapor, or to evaporate at a particular temperature and pressure. The normal boiling point of a liquid usually allows comparison of its volatility to other materials, with lower boiling points indicating greater volatility, but this may be affected somewhat by the presence of other materials. Comparison of the concentration ...

2006
KENJI OCHI MASAHIRO KATO KAZUO KOJIMA

Vapor-liquid equilibrium relationships are important properties for practical use, such as in the design and operation of distillation equipment. In general, vapor-liquid equilibrium relations are determined experimentally, and it is a custom to test the thermodynamic consistency of the equilibrium data. Investigators1^4-15'17'19~22-24) have proposed various methods for testing thermodynamic co...

2011
Kentaro Kanatani Alexander Oron

We numerically investigate the nonlinear evolution of the interface of a thin liquid-vapor bilayer system confined by rigid horizontal walls from both below and above. The lateral variation of the vapor pressure arising from phase change is taken into account in the present analysis. When the liquid vapor is heated cooled and gravity acts toward the liquid, the deflection of the interface monot...

1999
Pablo G. Debenedetti Howard Reiss

Kusaka correctly points out that his Eqs. ~1! @Eq. ~39! in Ref. 1# and ~2! @Eq. ~43! in Ref. 2# are equivalent. Hence, the statement in Ref. 2 that Nishioka and Kusaka ‘‘arrived at a different expression for the work of embryo formation’’ is incorrect. Our misunderstanding stemmed from a failure to properly translate the notation of Ref. 1 into our own language. At the outset, however, we point...

Journal: :The chemical machinerey 1950

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