Loose Leaf For Introduction To Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259878084
Author: Smith Termodinamica En Ingenieria Quimica, J.m.; Van Ness, Hendrick C; Abbott, Michael; Swihart, Mark
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 15, Problem 15.13P
Consider a binary system of species 1 and 2 in which the liquid phase exhibits partial miscibility. In the regions of miscibility, the excess Gibbs energy at a particular temperature is expressed by the equation:
In addition, the vapor pressures of the pure species are:
Making the usual assumptions for low-pressure VLE, prepare a Pxy diagram for this system at the given temperature.
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9.4. A PID temperature controller is at steady state with an output pressure of 9 psig. The set
point and process temperature are initially the same. At time = 0, the set point is increased
at the rate of 0.5°F/min. The motion of the set point is in the direction of lower temperatures.
If the current settings are
PART 3 LINEAR CLOSED-LOOP SYSTEMS
Ke
=
2 psig/°F
Ti =
1.25 min
TD = 0.4 min
plot the output pressure versus time.
9.6. A PI controller has the transfer function
Determine the values of K, and T.
5s + 10
Ge
S
9.5. The input & to a PI controller is shown in Fig. P9-5. Plot the output of the controller if
Ke 2 and 0.50 min.
-
E
0.5
0
-0.5
0
FIGURE P9-5
2
4
t, min
Chapter 15 Solutions
Loose Leaf For Introduction To Chemical Engineering Thermodynamics
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Work Prob. 15.2 for the van Laar equation. 15.2. A...Ch. 15 - Consider a binary vapor-phase mixture described by...Ch. 15 - Prob. 15.5PCh. 15 - It has been suggested that a value for GEof at...Ch. 15 - Pure liquid species 2 and 3 are for practical...Ch. 15 - It is demonstrated in Ex. 15.5 that the Wilson...Ch. 15 - Vapor sulfur hexafluoride SF6 at pressures of...Ch. 15 - Prob. 15.10P
Ch. 15 - Toluene(l) and water (2) are essentially...Ch. 15 - n-Heptane(l) and water (2) are essentially...Ch. 15 - Consider a binary system of species 1 and 2 in...Ch. 15 - Prob. 15.14PCh. 15 - 15.15. Work the preceding problem for mole...Ch. 15 - The Case I behavior for SLE (Sec. 15.4) has an...Ch. 15 - Prob. 15.17PCh. 15 - Prob. 15.18PCh. 15 - Prob. 15.19PCh. 15 - Estimate the solubility of naphthalene! 1) in...Ch. 15 - Prob. 15.21PCh. 15 - 15.22. The UNILAN equation for pure-species...Ch. 15 - In Ex. 15.8, Henry's constant for adsorption k,...Ch. 15 - It was assumed in the development of Eq. (15.39)...Ch. 15 - Suppose that the adsorbate equation of state is...Ch. 15 - Suppose that the adsorbate equation of state is...Ch. 15 - Derive the result given in the third step of the...Ch. 15 - Consider a ternary system comprising solute...Ch. 15 - It is possible in principle for a binary liquid...Ch. 15 - With V2=V2 , Eq.(15.66) for the osmotic pressure...Ch. 15 - A liquid-process feed stream F contains 99 mol-%...Ch. 15 - At 25°C the solubility of n-hexane in water is 2...Ch. 15 - A binary liquid mixture is only partially miscible...Ch. 15 - The spinodal curve for a binary liquid system is...Ch. 15 - Prob. 15.36PCh. 15 - Many fluids could be used as solvent species for...
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