saturated vapor pressure


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saturated vapor pressure

The pressure above a liquid at constant temperature which is confined so that the vapor from the liquid accumulates above it; the value depends on the temperature and the properties of the liquid.
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Thus, A is related to maximum amount of monolayer adsorption ([V.sub.m]), adsorption heat according to formula of which will be detailed below, saturated vapor pressure at experimental temperature ([P.sub.0]), and exponent M.
At the right hand side of equation, multiply both numerator and denominator by saturated vapor pressure [P.sub.0] as
Nomenclature V: Adsorption volume (cc/g) P: Equilibrium pressure (MPa) [V.sub.m]: Saturated adsorption volume (cc/g) b: Coefficient [P.sub.0]: Saturated vapor pressure at certain temperature (MPa) c: Coefficient m: Adsorption mass (g/g) k: Coefficient n: Coefficient (Mpa) Pr: The ration of equilibrium pressure P and saturated vapor pressure [P.sub.0] (1) [DELTA][H.sub.m]: Adsorption enthalpy (J) R: Molar gas constant (J/(mol-K)) T: Temperature (K) [[rho].sub.g]: Gas density (g/ml) A: Variable B: Variable M: Variable N: Variable K: Variable [a.sub.1]: Constant [b.sub.1]: Constant a: Constant [E.sub.1]: Heat of adsorption between adsorbate at first layer and adsorbent (kJ/mol) [E.sub.L]: Heat of adsorption between adsorbate at n layer and adsorbate at n + 1 layer (n > 1) (kJ/mol).
Parameters Value Symbol/unit The radius of bent axle 0.03 m The ratio of crank and connecting link 0.25 / Crankshaft speed 150 n/(r/min) Water density 998 kg/[m.sup.3] Water viscosity 0.001003 Pa/[s.sup.-1] Inlet pressure 0.1 MPa Outlet pressure 2 MPa Saturated vapor pressure 2339 Pa Time step 0.001 S
On one hand, the increase of temperature can improve the saturated vapor pressure of the solute; on the other hand, the high temperature also reduces the density of the supercritical fluid, namely, reduce the solubility of the solute.
where [DELTA]P is difference of the pressure in the far field ([P.sub.[infinity]]) and saturated vapor pressure ([P.sub.c]), R is the radius of the bubble and dots denote derivative with respect to time, thus [??] is the radial velocity of the bubble andis the [??] radial acceleration [22].
where [P.sub.S1] = the saturated vapor pressure at the time the vacuum is released (Pa).
[P.sub.A2] is the difference of the atmospheric pressure minus the corresponding saturated vapor pressure. Accordingly, P can be expressed as
where [P.sub.o] = the atmospheric pressure (Pa); [P.sub.S2] = the saturated vapor pressure at the time when the vacuum is reapplied (Pa).
This will increase the saturated vapor pressure from 2335 to 3752 Pa while maintaining the actual vapor pressure at 1868 Pa.
[T.sub.elev] was then used to calculate the saturated vapor pressure ([p.sub.o]) of the controlled-space air as follows: