Download GTU BE/B.Tech 2018 Winter 6th Sem New 2161401 Food Process Equipment Design Question Paper

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Seat No.:

Enrolment No.

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GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018

Subject Code:2161401 Date:16/11/2018

Subject Name:Food Process Equipment Design

Time: 02:30 PM TO 05:00 PM Total Marks: 70

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks

Q.1

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1. With the neat sketch of psychometric chart explain, “how the recirculation of air in a dryer affect its performance”? [07]

Q.2

1. Differentiate: [03]
   1. Pressure vessel and closed container
   2. Thin and thick wall pressure vessel

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2. Describe the classification of the agitators used in the food processing? [04]
3. Explain the application of scrap surface evaporator in food industry? [07]

OR

1. Write a note on Major and subsidiary loads on pressure vessel? [03]
2. Explain the need of safety factor in a pressure vessel? [04]

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3. Calculate the safe stress for high alloy stainless steel operated at 62°C with randomly checked lap joint and safety factor of 2.2. The material has allowable stress at 30 and 120°C as 190 and 120 N/mm² respectively. Lap joint efficiency and joint checking efficiency may be taken as 75% each. [07]

Q.3

1. What is LMTD? Where it is applicable? What is its significance? [03]
2. Discuss possible material hazards in the dairy industry? How it can be checked? [04]
3. Compare single effect and multi effect evaporator? [07]

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OR

1. How the performance of the non-mixing type cross flow heat exchanger is calculated? [03]
2. Describe probable process hazards in the bakery industry? [04]
3. Explain the selection process of granular food product handling system? [07]

Q.4

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1. Discuss different type of paddle agitators, their use and limitations? [03]
2. Why it is important to keep corrosion allowance during designing? [04]
3. Differentiate forward and backward feed system in a heat exchanger? [07]

OR

1. What is the purpose of Chevron plate? Explain with sketch [03]

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2. Explain the Duhring lines with neat sketch? [04]
3. With neat sketch explain LSU dryer and its time management? [07]

Q.5

1. What is Regeneration? [03]
2. “In turbine agitator, high speed of agitator shaft leads improper mixing.” Why? [04]

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3. What are the roles of baffles in agitator? What are its size limitations? [07]

OR

1. What is significance of power number [03]
2. With neat sketch explain PHE? [04]
3. Explain the U- arrangement; Z- arrangement and 2x4/1x8 arrangements in plate heat exchanger with diagram? [07]

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