Fig. 21. Pressure constant temperature (PCT) curves of MmNi alloy system where open symbols represent absorption and closed symbols represent desorption for A, MmNi. Mn. AIq B, MmNi. gMn. AIq 3C0Q and C, MmNi. Mn. AIq 3C0Q 3. H/M represents the ratio in the hydride of the mole |

Presents Antoine vapor-pressure constants for pure compounds for two pressure ranges. [Pg.12]

TABLE 13-4 Antoine Vapor-Pressure Constants and Liquid Molar Volume [Pg.1259]

To find the constants from experimental data, hold one of the partial pressures constant while varying the other one. Then interchange the partial pressures to find the other constants. In some cases the exponents m and n have been found to be fractional. [Pg.674]

Wichterle, I., and J. Linek "Antoine Vapor Pressure Constants of Pure Compounds," Academia, Prague, 1971. [Pg.12]

Path III (a) Do electrical work on the system, holding the pressure constant at 1.000 atm, until the volume /has increased to 34.33 I under these circumstances, the system also does expansion work against the external pressure. [Pg.330]

Gas thermometers that employ equation (1.10) can be constructed to measure either pressure while holding the volume constant (the most common procedure) or volume while holding the pressure constant. The (pV) product can be extrapolated to zero p. but this is an involved procedure. More often, an equation of state or experimental gas imperfection data are used to correct to ideal behavior. Helium is the usual choice of gas for a gas thermometer, since gas imperfection is small, although other gases such as hydrogen have also been used. In any event, measurement of absolute temperature with a gas thermometer is a difficult procedure. Instead, temperatures are usually referred to a secondary scale known as the International Temperature Scale or ITS-90. [Pg.12]

Differentiation of Eq. (1) with respect to the number of solvent molecules while keeping temperature and pressure constant, results in Eq. (2) [Pg.79]

Table 13-1, based on the binary-system activity-coefficient-eqnation forms given in Table 13-3. Consistent Antoine vapor-pressure constants and liquid molar volumes are listed in Table 13-4. The Wilson equation is particularly useful for systems that are highly nonideal but do not undergo phase splitting, as exemplified by the ethanol-hexane system, whose activity coefficients are snown in Fig. 13-20. For systems such as this, in which activity coefficients in dilute regions may |

The scale-up of conventional cake filtration uses the basic filtration equation (eq. 4). Solutions of this equation exist for any kind of operation, eg, constant pressure, constant rate, variable pressure—variable rate operations (2). The problems encountered with scale-up in cake filtration are in estabHshing the effective values of the medium resistance and the specific cake resistance. [Pg.392]

Phase 4. During this phase the original mud that follows the kick fluid is circulated out of the hole and a kill mud fills up the annulus. The choke is opened more and more to keep the drillpipe pressure constant. At the end of this phase the safe pressure overbalance is restored. [Pg.1109]

As inlet pressure rises above set pressure, dome pressure reduction will be such as to provide modulating action of the main valve piston proportional to the process upset. The spool/feedback piston combination will move, responding to system pressure, to alternately allow pressure in the main valve dome to increase or decrease, thus moving the main valve piston to the exact lift that will keep system pressure constant at the required flow. Full main valve lift, and therefore full capacity, is achieved with 5% overpressure. As system pressure decreases below set pressure, the feedback piston moves downward and opens the inlet seat to admit system pressure to the dome, closing the main valve. [Pg.406]

See also in sourсe #XX -- [ Pg.65 ]

See also in sourсe #XX -- [ Pg.6 , Pg.16 ]

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