equilibrium vapor pressure


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equilibrium vapor pressure

[‚ē·kwə′lib·rē·əm ′vā·pər ‚presh·ər]
(physics)
The vapor pressure of a system in which two or more phases of water coexist in equilibrium.
References in periodicals archive ?
Equilibrium Vapor Pressure and Maximum Evaporation Flux.
The term for the vapor pressure of the condensed phase in (1) is equated to sum of equilibrium vapor pressure of monomer, dimer, and trimer species.
[23], in conjunction with the analysis of the equilibrium vapor pressure. The meniscus effect on the evaporation of the molten salts could be quantified by comparing the condensation coefficients determined by using various diameters of cylindrical containers.
Of course the hydrological cycle depends crucially on the evaporation of water from the warm oceans of Earth and the eventual condensation of water vapor to generate precipitation; and one of the key pathways for precipitation formation depends on the differential equilibrium vapor pressure of liquid and solid phases of water.
The desiccant is regenerated by first heating it to raise its equilibrium vapor pressure. The hot desiccant, typically between 160[degrees]F (71.1[degrees]C) and 200[degrees]F (93.3[degrees]C), is sprayed over a bed of random fill (e.g., Raschig rings).
As the fraction of calcium chloride to lithium chloride increases from 0% to 50%, the equilibrium vapor pressure for the solution more closely matches the value for pure lithium chloride.
The equilibrium vapor pressure of the hot desiccant is much higher than the partial pressure of water vapor in the air, so water evaporates from the desiccant into the air.
The desiccant's equilibrium vapor pressure, which is the driving potential for regeneration, is an exponential function of temperature.