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Dew point temperature (P and y¡ are known): 1. Estimate T. sat Note: When Raoult's law is applicable, select a temperature between (T§at)min and sat Imax: 1 2. Rewrite Equation 11 (P :) as a function of T using Antonie Equations and %3D calculate Pcalc- 3. Compare Pcalc with the specified P. If Pcalc >P, assumed T is too high; if Pcalc

Dew point temperature (P and y¡ are known): 1. Estimate T. sat Note: When Raoult's law is applicable, select a temperature between (T§at)min and sat Imax: 1 2. Rewrite Equation 11 (P :) as a function of T using Antonie Equations and %3D calculate Pcalc- 3. Compare Pcalc with the specified P. If Pcalc >P, assumed T is too high; if Pcalc

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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# Dew Point Temperature (P and yi are Known) 1. **Estimate T.** *Note: When Raoult’s law is applicable, select a temperature between \( (T_i^{\text{sat}})_{\text{min}} \) and \( (T_i^{\text{sat}})_{\text{max}} \).* 2. **Rewrite Equation 11 \( \left( P = \frac{1}{\sum_i \frac{y_i}{P_i^{\text{vap}}}} \right) \) as a function of T using Antoine Equations and calculate \( P_{\text{calc}} \).** 3. **Compare \( P_{\text{calc}} \) with the specified P.** If \( P_{\text{calc}} > P \), assume T is too high; if \( P_{\text{calc}} < P \), assume T is too low. When the calculated pressure matches the specified pressure, determine vapor pressures of pure components from Antoine equations. 4. **Mole fractions in the liquid phase are calculated from Equation 5 \( (y_i P = x_i P_i^{\text{vap}}) \).** ## Example 4: Estimate the dew point temperature of a gas mixture consisting of 50% n-pentane (1), 45% n-hexane (2), and 5% n-heptane (3) at 0.8 bar. Also, calculate the composition of the first drop of liquid.
Transcribed Image Text:# Dew Point Temperature (P and yi are Known) 1. **Estimate T.** *Note: When Raoult’s law is applicable, select a temperature between \( (T_i^{\text{sat}})_{\text{min}} \) and \( (T_i^{\text{sat}})_{\text{max}} \).* 2. **Rewrite Equation 11 \( \left( P = \frac{1}{\sum_i \frac{y_i}{P_i^{\text{vap}}}} \right) \) as a function of T using Antoine Equations and calculate \( P_{\text{calc}} \).** 3. **Compare \( P_{\text{calc}} \) with the specified P.** If \( P_{\text{calc}} > P \), assume T is too high; if \( P_{\text{calc}} < P \), assume T is too low. When the calculated pressure matches the specified pressure, determine vapor pressures of pure components from Antoine equations. 4. **Mole fractions in the liquid phase are calculated from Equation 5 \( (y_i P = x_i P_i^{\text{vap}}) \).** ## Example 4: Estimate the dew point temperature of a gas mixture consisting of 50% n-pentane (1), 45% n-hexane (2), and 5% n-heptane (3) at 0.8 bar. Also, calculate the composition of the first drop of liquid.
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