Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem New 2170507 Computer Aided Process Synthesis Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2170507 Date: 03/12/2018
Subject Name: Computer Aided Process Synthesis
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the number of possible sequences for separation by ordinary
distillation for 7, 8 and 10 number of products.
03
(b) Explain the ethical role of engineer in design of process. 04
(c) Determine the minimum utility target for following stream data :
Take ?T min=10
o
C
stream Tin (K) Tout (K) mCp (KW/K)
H1 650 370 10
H2 590 370 20
C1 410 650 15
C2 353 500 13
07
Q.2 (a) Define : Minimum approach temperature, Threshold approach
temperature, Optimum approach temperature.
03
(b) Explain the generalized rules for stream splitting on both sides of the
pinch to satisfy MER requirements.
04
(c) Explain the step wise procedure for construction of attainable region. 07
OR
(c) Derive the equation to construct attainable region for steam
reforming of methane. Consider following reactions dominate in
process.
CH4 + 2H2O ? CO2 + 4H2 , CH4 + H2O ? CO + 3H2,
CO + H2O ? CO2 + H2
07
Q.3 (a) Compare flowshop plant and jobshop plant. 03
(b) Describe any four environmental factors to be considered in process
design.
04
(c) Define overlapping and non overlapping operation and show by any
suitable example that overlapping operation is more efficient.
07
OR
Q.3 (a) Compare various transfer policies. 03
(b) Draw the algorithm of Detailed Process Synthesis-Algorithmic
Methods.
04
(c) Calculate the cycle time using following processing time data for ZW,
NIS and UIS:
product Stage 1 Stage 2 Stage 3
A 6 4 3
B 3 2 2
07
Q.4 (a) Explain node and saddle point in residue curve map. 03
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2170507 Date: 03/12/2018
Subject Name: Computer Aided Process Synthesis
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the number of possible sequences for separation by ordinary
distillation for 7, 8 and 10 number of products.
03
(b) Explain the ethical role of engineer in design of process. 04
(c) Determine the minimum utility target for following stream data :
Take ?T min=10
o
C
stream Tin (K) Tout (K) mCp (KW/K)
H1 650 370 10
H2 590 370 20
C1 410 650 15
C2 353 500 13
07
Q.2 (a) Define : Minimum approach temperature, Threshold approach
temperature, Optimum approach temperature.
03
(b) Explain the generalized rules for stream splitting on both sides of the
pinch to satisfy MER requirements.
04
(c) Explain the step wise procedure for construction of attainable region. 07
OR
(c) Derive the equation to construct attainable region for steam
reforming of methane. Consider following reactions dominate in
process.
CH4 + 2H2O ? CO2 + 4H2 , CH4 + H2O ? CO + 3H2,
CO + H2O ? CO2 + H2
07
Q.3 (a) Compare flowshop plant and jobshop plant. 03
(b) Describe any four environmental factors to be considered in process
design.
04
(c) Define overlapping and non overlapping operation and show by any
suitable example that overlapping operation is more efficient.
07
OR
Q.3 (a) Compare various transfer policies. 03
(b) Draw the algorithm of Detailed Process Synthesis-Algorithmic
Methods.
04
(c) Calculate the cycle time using following processing time data for ZW,
NIS and UIS:
product Stage 1 Stage 2 Stage 3
A 6 4 3
B 3 2 2
07
Q.4 (a) Explain node and saddle point in residue curve map. 03
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2
(b) Design heat exchanger network on hot side of pinch for following
:Take ?T min= 10
o
C, Hot pinch = 90
o
C, Qhu= 80 KW
stream Tin
o
C Tout
o
C mCp (KW/
o
C)
H1 180 60 3
H2 150 30 1
C1 30 135 2
C2 80 140 5
04
(c) Explain the positioning of heat pump with reference to pinch
temperature.
07
OR
Q.4 (a) Derive the equation for construction of residue curve. 03
(b) Design heat exchanger network on cold side of pinch for following
:Take ?T min= 10
o
C, Hot pinch = 90
o
C, Qcu= 50 KW
stream Tin
o
C Tout
o
C mCp (KW/
o
C)
H1 180 60 3
H2 150 30 1
C1 30 135 2
C2 80 140 5
04
(c) Explain the heat integration in distillation column using heat pumping,
vapor recompression and Reboiler flashing.
07
Q.5 (a) Draw the superstructure for one cold stream and two hot streams. 03
(b) Explain GCC briefly. 04
(c) Draw the complex and thermally coupled distillation column
configurations for ternary distillation.
07
OR
Q.5 (a) Draw the superstructure for one hot stream and two cold streams. 03
(b) Compare condensed transshipment model and expanded
transshipment model.
04
(c) Draw the possible sequences for 3 number of products and explain
heuristics for determining favorable sequences.
07
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This post was last modified on 20 February 2020