What is the exam pattern and passing mark for GTU Computer Aided Process Synthesis (3170507)?

The GTU theory examination carries 70 total marks with a duration of 2.5 Hours. Minimum passing criteria is 23 marks (33%). The paper consists of 5 main questions with official marking breakdown and internal choices.

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Gujarat Technological UniversitySummer 2026 examination

GTU 3170507 Computer Aided Process Synthesis Summer 2026 Question Paper & PDF

B.E. · Chemical Engineering · Semester 7 · Subject code 3170507

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Total: 70 marks
To pass: 23 marks (33%)
Duration: 2.5 Hours 2:30 PM – 5:00 PM
Questions: 5 with internal choice

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Q.1

14 Marks

(a)

3 marks

Explain how stream splitting can help in getting better design alternatives.

(b)

4 marks

Explain pinch design approach for inventing heat exchanger network.

(c)

7 marks

Discuss in brief for design opportunities and general steps in product and process design.

Q.2

14 Marks

(a)

3 marks

Explain in detail common industrial separation methods.

(b)

4 marks

Explain transshipment model for stream matching.

(c)

7 marks

Calculate the number of possible sequences of ordinary distillation column for 5 number of product and draw the sequences.

(c)

7 marks

Discuss the procedure for reactor network design using concept of attainable region.

Q.3

14 Marks

(a)

3 marks

Discuss in brief about environmental issues.

(b)

4 marks

Describe engineering ethics briefly.

(c)

7 marks

For ΔTmin = 20°C, find out pinch point and construct the Hohmann composite curve (HCC). Find out sink (Qhmin) and source (Qcmin). Stream Tin (°C) Tout (°C) mCp (kW/°C) H1 180 40 2 H2 150 40 4 C1 60 180 3 C2 30 105 2.6

(a)

3 marks

Discuss various reactor models in detail.

(b)

4 marks

Explain reactor design for complex configurations.

(c)

7 marks

Explain the concept of threshold approach temperature and optimum approach temperature.

Q.4

14 Marks

(a)

3 marks

For stream matching to be feasible at pinch, justify that Ch ≥ Cc must be satisfied on cold side of pinch.

(b)

4 marks

Discuss the properties of residue curve map.

(c)

7 marks

Explain Heuristics for determining favorable sequences of ordinary distillation column.

(a)

3 marks

Describe the use of grand composite curve to select utility.

(b)

4 marks

Draw the superstructures for one cold stream and three hot streams.

(c)

7 marks

For the process fluids as shown in the table, find minimum utility requirements and pinch temperature using temperature-interval method. Consider ΔTmin = 10°C. Stream Ts (oC) Tt (oC) mCp (kW/oC) H1 180 40 20 H2 160 40 40 C1 220 600 30 C2 180 300 22

Q.5

14 Marks

(a)

3 marks

Explain reboiler flashing in heat integration of distillation column.

(b)

4 marks

Explain energy saving in multi-effect distillation compared to the conventional distillation using TQ diagram.

(c)

7 marks

Given the processing times for two products A and B, determine make span and cycle time for manufacturing two batch of A and two batch of B using

i)zero wait policy (ABAB),

ii)no intermediate storage policy (ABAB), and

iii)unlimited intermediate storage policy (ABAB). Processing Times (hr) Stage 1 Stage 2 Stage 3 A 6 4 3 B 32 Marks

(a)

3 marks

Construct three alternatives for the placement of heat engines.

(b)

4 marks

Compare forward heat integration and reverse heat integration in distillation with necessary

(c)

7 marks

Determine make span and cycle time for processing times of two product plants are as given below:

i)single product (AABB) campaigns,

ii)mixed product (ABAB) campaigns, and

iii)mixed product with clean up time (1 hr). Product Stage 1 (hr) Stage 2 (hr) A 5 2 B4 Marks

More Computer Aided Process Synthesis papers

Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.

Summer 202570 marks · 5 questions

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About this paper

Official Gujarat Technological University (GTU) examination paper for Computer Aided Process Synthesis (Summer 2026, B.E. · Chemical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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