Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2170507 Computer Aided Process Synthesis Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2170507 Date:28/01/2021
Subject Name:Computer Aided Process Synthesis
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is Pinch Point? Explain Its Significance In Heat Exchanger Network.
03
(b) Explain the Role of Engineer in Process Design.
04
(c) Explain Step by step Procedure for Construction of attainable region for
07
Reactor Design
Q.2 (a) Define Minimum Approach Temperature, Threshold Approach
03
Temperature & Optimum Approach Temperature.
(b) Attaina
"No he ble r
at Pa egion
sses
Across The Pinch" Justify the Statement.
04
(c) A Mixture of Four Components Labeled as A,B,C & D with flows in the
07
feed of 1 , 0.5 , 1 & 7 mole/sec. respectively for a total 9.5 mole/sec. &
Relative Volatilities are 4.3 , 4 , 3 & 2 respectively. Calculate the number
of possible sequences for Four Products . Find the Best suitable Sequence
& also draw the best sequence , The information about marginal flow
estimated for non-key species are as bellow
A
B
C
D
A/B
--
--
2.6
6.5
B/C
5.3
--
--
9.3
C/D
2.4
1.3
--
--
Q.3 (a) Calculate the minimum number of heat exchangers for heat exchanger
03
network involving three different streams and two distinct utility sources.
All the streams in process are connected directly or indirectly by heat
exchangers.
(b) Discuss the Engineering Ethics briefly.
04
(c) We are having Heat Exchanger Network that has a four process streams with
07
inlet temperature of 30 , 80 , 180 & 150oC & Respective Outlet Temperature
of 135 , 140 ,60 & 30oC Use Temperature Interval Method to find out
Minimum Utility Requirement. Value of heat capacity C (KW/oC) are 3 , 1
, 2 & 5 Respectively. Assume the value of t.
Q.4 (a) Explain Significance of GCC Curve in Finding Minimum Utility
03
Requirement.
(b) Explain The Role of Computers in Process Design.
04
(c) Discuss the Pinch Design Approach for inventing a Heat Exchanger
07
Network
Q.5 (a) What are the safety considerations in Process Design.
03
(b) What is stream Splitting? Explain its significance.
04
(c) Explain Separation of Solid fluid System.
07
1
Q.6 (a) List out methods for finding MER Target in Heat exchanger Network.
03
(b) Explain the concept of stream matching in Heat Exchanger Network.
04
(c) Explain Reactor Design for large adiabatic changes.
07
Q.7 (a) Define Multi effect Distillation in brief.
03
(b) Compare Various transfer Policies in Batch Plant.
04
(c) Explain positioning of heat engines & heat pumps relative to pinch.
07
Q.8 (a) Differentiate Flowshop & Jobshop Plant.
03
(b) Explain the concept of reboiler flashing & vapour recompression in
04
distillation configuration
(c) Define overlapping and non overlapping operation and show by any suitable
07
example that overlapping operation is more efficient.
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This post was last modified on 04 March 2021