GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII(NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2170502 Date:14/05/2019
Subject Name: Process Equipment Design -11
Time: 02:30 PM TO 05:30 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1
- (a) Give the full name of ASTM, ASME & HTRL 03
- (b) Write a short note on corrosion allowance. 04
- (c) Define the terms: Stress, Strain, Ductility, Rigidity, Elasticity, Creep, Resilience 07
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Q.2
- (a) What is design stress and factor of safety? Explain in brief. 03
- (b) Describe in brief about design pressure & design temperature. 04
- (c) Enlist various types of fabrication techniques used in industries for the designing of 07 equipment. Explain any one in detail.
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OR
- (c) Discuss in detail about various types of static and rotary equipments used in industry. 07
Q.3
- (a) Discuss the use of jackets and coils in the industry. 03
- (b) What do you mean by weld joint efficiency factor? Discuss in brief. 04
- (c) Explain the stepwise procedure for the design of conical roof with structural support for 07 storage tank.
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OR
Q.3 Data for pressure vessel are given below: 14
- Capacity : 10000 L (cylindrical portion only), Operating pressure = 10 kgf/cm²
- f=980kg/cm² Density of steel = 7.7gm/cc, J = 0.85
- Torspherical heads are provided at bothsides.
- For torispherical head, Rc = 10% excess of .D., R; = 10% of R
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Taking L/D =5, calculate and suggest the plate thickness of shell.
Also calculate the thickness & weight of torispherical head.
Q.4
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- (a) Discuss the term: Poisson’s Ratio; Modulus of elasticity and Power number. 03
- (b) Discuss about the design Saddle support. 04
- (c) State the various types of agitators. Discuss the design aspects of any two in details. 07
OR
Q.4 Calculate the thickness of shell of the reactor and thickness of jacket for the following 14 available options (i): Reactor with plain jacket and (ii) Reactor with channel jacket.
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Following data are available.
- Inside diameter of shell = 1500 mm, Inside diameter of jacket = 1600 mm
- Shell length=1500 mm, Half coil diameter = 75 mm, Width of channel jacket = 75 mm
- Internal design pressure for Shell & Jacket= 4 kgf/cm² & 3 kgf/cm²
- Design temperature for both shell and jacket 150 °C
- Max. Allowable stress = 980 kgf/cm², Modulus of elasticity, E = 19 x 106 kgf/cm²
- Poisson’s ratio, p = 0.3, Joint Efficiency J = 0.85
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Thickness of Shell T = (PDi / 2fJ -P) +CA Thickness of plain jacket T = (Pri / 2fJ -0.6P) +CA
fes = (PDi / 4t) + (Pdi / 2.5t) fas = (PDi / 4t) + (Pdi / 2.3t) + (2APd²/3il)
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Q.5
- (a) Define Gasket seating stress and gasket factor. 03
- (b) State different types of gasket used in chemical industries. 04
- (c) Examine the data given below to evaluate the requirement of compensation for the 07 nozzle opening in a cylindrical shell. If compensation ring (Reinforcement pad) is required then find its dimensions and weight.
Outside diameter of shell =2 m
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Max. Working pressure within shell = 3.5 MN/m²
Wall thickness for the shell = 0.05 m, Corrosion allowance = 3 mm
Joint efficiency = 1 (for shell and nozzle), Length of nozzle = 100 mm
MOC of shell, nozzle and reinforcement pad = IS 2002
Density of IS 2002 = 7800 kg/m³, Allowable stress of IS 2002 = 96 MN/m²
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O. D of nozzle (seamless) = 0.25 m, Nozzle wall thickness = 0.016 m
OR
- (a) Discuss in brief about Radiography test used for welding. 03
- (b) Describe various types of jackets and their selection criteria. 04
- (c) Discuss the types of support used in industry. 07
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This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
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