Q2. Consider a process that has two process hot streams (H₁ and H₂), two process cold streams (C₁ and C₂), a heating utility (HU₁, which is a saturated vapor that loses its latent heat of condensation), and a cooling utility (CU₁). The problem data are given in Table 2. The cost of the heating utility is $4/106 kJ added, and the cost of the coolant is $7/106 kJ. A value of ATmin=10K is used. Employ graphical, algebraic, and optimization techniques to determine the minimum heating and cooling requirements for the process. TABLE 2. STREAM DATA FOR PROBLEM 2 Flowratex specific Stream heat (kW/°C) Supply temperature (°C) Target temperature (°C) H₁ 10.55 249 138 H₂ 8.79 160 93 HU₁ ? 270 270 C₁ 7.62 60 160 C₂ 6.08 116 260 CU₁ ? 38 82
Q2. Consider a process that has two process hot streams (H₁ and H₂), two process cold streams (C₁ and C₂), a heating utility (HU₁, which is a saturated vapor that loses its latent heat of condensation), and a cooling utility (CU₁). The problem data are given in Table 2. The cost of the heating utility is $4/106 kJ added, and the cost of the coolant is $7/106 kJ. A value of ATmin=10K is used. Employ graphical, algebraic, and optimization techniques to determine the minimum heating and cooling requirements for the process. TABLE 2. STREAM DATA FOR PROBLEM 2 Flowratex specific Stream heat (kW/°C) Supply temperature (°C) Target temperature (°C) H₁ 10.55 249 138 H₂ 8.79 160 93 HU₁ ? 270 270 C₁ 7.62 60 160 C₂ 6.08 116 260 CU₁ ? 38 82
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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Transcribed Image Text:Q2. Consider a process that has two process hot streams (H₁ and H₂),
two process cold streams (C1 and C2), a heating utility (HU₁, which is a
saturated vapor that loses its latent heat of condensation), and a cooling
utility (CU₁). The problem data are given in Table 2. The cost of the heating
utility is $4/106 kJ added, and the cost of the coolant is $7/10° kJ. A value
of ATmin=10K is used. Employ graphical, algebraic, and optimization
techniques to determine the minimum heating and cooling requirements
for the process.
TABLE 2. STREAM DATA FOR PROBLEM 2
Stream
Flowrate x specific
heat (kW/°C)
Supply
temperature (°C)
Target
temperature (°C)
H₁
10.55
249
138
H₂
8.79
160
93
HU₁
?
270
270
C₁
7.62
60
160
C₂
6.08
116
260
CU₁
?
38
82
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