Gujarat Technological UniversitySummer 2026 examination

GTU 3170516 Process Auxiliaries and utilities Summer 2026 Question Paper & PDF

B.E. · Chemical Engineering · Semester 7 · Subject code 3170516
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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

What is the purpose of preparing a process flow diagram? What should be included in a process flow diagram?

(b)
4 marks
In designing a industrial pipe line, what are the important factors to be considered?
(c)
7 marks
Highlight key design points for steam distribution piping.

Q.2

14 Marks
(a)
3 marks
Name and discuss different types of pipe joints.
(b)
4 marks
Explain the selection criteria of valves.
(c)
7 marks

What are the different types of valves and where are they used? What are the selection criteria for control valves?

(c)
7 marks

Differentiate between NPSH available and NPSH required. What will happen if NPSH available is less than NPSH required?

Q.3

14 Marks
(a)
3 marks
List the different kinds of chemical process utilities used in industry.
(b)
4 marks
Suggest various methods of softening hard water. Discuss any one detail.
(c)
7 marks
What are the factors that affect the efficiency of a cooling tower? Discuss in detail.
(a)
3 marks
How does resin remove water hardness?
(b)
4 marks
What is a boiler feed water treatment system and How does it work?
(c)
7 marks
Discuss types and working of industrial cooling towers.

Q.4

14 Marks
(a)
3 marks
What is thermal fluid heating system?
(b)
4 marks
Why does ethylene glycol mix with water while used as a coolant?
(c)
7 marks

Discuss important criteria for the selection of steam traps. What are the main three types of steam traps?

(a)
3 marks
How is air compressed?
(b)
4 marks
What is flash steam? What are the benefits of condensate recovery?
(c)
7 marks

What is the most common cause of air compressor failure? List safety measures those are required for air compressor.

Q.5

14 Marks
(a)
3 marks
What is the design point (duty point) of a centrifugal pump?
(b)
4 marks
Discuss most common pipe insulation materials.
(c)
7 marks
Highlight important features of inert nitrogen gas systems for chemical plants
(a)
3 marks
What is Evaporative Cooling? Discuss the concept with help of example.
(b)
4 marks
Discuss working principle and main parts of ejector.
(c)
7 marks
Difference between Vapour compression and Absorption Refrigeration System.

Other Semester 7 subjects

BE Chemical

2170501
Chemical Reaction Engineering - II
2170502
Process Equipment Design -II
2170507
Computer Aided Process Synthesis
3170501
Chemical Reactions Engineering II

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About this paper

Official Gujarat Technological University (GTU) examination paper for Process Auxiliaries and utilities (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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