Vapor densities, saturated

In the present investigation, the compression factor, fugacity coefficient, and residual thermodynamic functions of the real fluid R-500 have been calculated using the BACK equation of state. For this purpose, the experimental data, i.e., critical constants, saturated liquid density, saturation vapor pressure, and the PVT data have been utilized. 

Density saturated liquid at normal boiling pressure (1) Density saturated vapor at normal boiling pressure (1) Triple point pressure [ ]... 

Extension of tbe pressure range to P,. = 14 is available in tbe Technical Data Book. For saturated vapor densities, tbe values of Z and Z are tabulated as a... 

Saturation vapor density The density of a saturated vapor. 

In this table the parameters are defined as follows Bo is the boiling number, d i is the hydraulic diameter, / is the friction factor, h is the local heat transfer coefficient, k is the thermal conductivity, Nu is the Nusselt number, Pr is the Prandtl number, q is the heat flux, v is the specific volume, X is the Martinelli parameter, Xvt is the Martinelli parameter for laminar liquid-turbulent vapor flow, Xw is the Martinelli parameter for laminar liquid-laminar vapor flow, Xq is thermodynamic equilibrium quality, z is the streamwise coordinate, fi is the viscosity, p is the density, <7 is the surface tension the subscripts are L for saturated fluid, LG for property difference between saturated vapor and saturated liquid, G for saturated vapor, sp for singlephase, and tp for two-phase. 

The trapping efficiency of polymeric, microporous adsorbents [e.g., polystyrene, polyurethane foam (PUF), Tenax] for compound vapors will be affected by compound vapor density (i. e., equilibrium vapor pressure). The free energy change required in the transition from the vapor state to the condensed state (e.g., on an adsorbent) is known as the adsorption potential (calories per mole), and this potential is proportional to the ratio of saturation to equilibrium vapor pressure. This means that changes in vapor density (equilibrium vapor pressure) for very volatile compounds, or for compounds that are gases under ambient conditions, can have a dramatic effect on the trapping efficiency for polymeric microporous adsorbents. 

Liquid ammonia is stored in a tank at 24°C and a pressure of 1.4 X 106 Pa. A pipe of diameter 0.0945 m breaks off a short distance from the vessel (the tank), allowing the flashing ammonia to escape. The saturation vapor pressure of liquid ammonia at this temperature is 0.968 X 106 Pa, and its density is 603 kg/m3. Determine the mass flow rate through the leak. Equilibrium flashing conditions can be assumed. 

An expression for the current density, below which complete liquid-to-vapor conversion is possible, was obtained. This characteristic parameter is related to saturated vapor pressure and vapor diffusion. Moreover, the CCL fulfills an important function in regulating hydraulic fluxes toward PEM and GDL sides. 

Callletet and Mathias law physchem The law that describes the relationship between the mean density of a liquid and its saturated vapor at that temperature as being a linear function of the temperature. kl-o ta an mo thT-os, 16 cajeputol See eucalyptol. ka -3-p3,t6l calabarine See physostigmine. k3 lab-3,ren calcined gypsum See plaster of paris. kal.sTnd jip-som calcined soda See soda ash. kal.sTnd so-do ... 

Pesticides are characterized by a range of (saturation) vapor pressure and densities (Table 8.2) they therefore evaporate from the land surface in different patterns. Peck and Hombuckle (2005) studied atmospheric concentrations of currently used pesticides in Iowa (United States) during the years 2000-2002. The average detected concentrations of five heavily used herbicides were 0.52 ng/m ... 

If IFj is the adsorbate weight at saturation (i.e. when P/Pq = 1), then W /Pi = V, where F, and p, are the volume of liquid adsorbate at saturation and the liquid density, respectively. Various studies " have shown that at saturation the liquid volume of different adsorbates, when measured on porous adsorbents, is essentially constant and is independent of the adsorbate. This constancy of adsorbed liquid at saturation is known as the Gurvitsh rule and provides direct evidence that the pores are filled with liquid adsorbate at saturated vapor pressures. 

Figure 2.2 Temperature, pressure, and density relations for water substance. The heavy curve corresponds to the saturated vapor pressure of liquid water. Note the extreme sensitivity of density to pressure near the critical temperature.

Adsorbed Phase Density. Taking into account that isosteres and saturated vapor pressure curves are linear for coordinates In p vs. T l, Bering and Dubinin s method (16) allowed us to derive p vs. T by Equation 6, along an isostere. Neglecting the dependence of p on q relative to that of p on T, according to a classical assumption, we obtained p = f(T) with adjustable parameters. 

Cross section calculated from the molecular weight and density of liquid. The ratio of the partial pressure introduced (P) to the saturated vapor pressure (Pa). Adsorption amount on Cs2.2 divided by that on Cs2.5. J 1,3,5-Trimethylbenzene. e 1,3,5-Triisopropylbenzene. 

From a study of the pressure dependence of the vapor density, it is concluded that the vapor contains monomer, dimer, trimer, and higher polymers which are in equilibrium with each other (62). At 180° C, the saturated vapor consists of 41% monomer, 44% dimer, and 14% trimer. The following structures have been proposed for the dimer and trimer in the vapor state ... 

The following table provides the temperature dependence of the saturated vapor pressure and vapor density of water. This information is useful in gas chromatographic headspace analysis and for SPME sampling.12... 

Defibaugh, D.R., Morrison, G. (1996) Compressed liquid densities, saturated liquid densities, and vapor pressures of 1,1-difluoroet-hane. J. Chem. Eng. Data 41, 376-381. 

Maezawa, Y., Sato, H., Watanabe, K. (1990) Saturated liquid densities of HCFC 123 and HFC 134a. J. Chem. Eng. Data 35,225-228. Maezawa, Y., Sato, H., Watanabe, K. (1991a) Liquid densities and vapor pressures of l-chloro-l,l-difluoroethane (HCFC 142b). J. Chem. Eng. Data 36, 148-150. 

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