Download GTU BE/B.Tech 2017 Winter 7th Sem New 2170911 Energy Conservation And Audit Departmental Elective Ii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION — WINTER 2017

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Subject Code: 2170911 Date:02/11/2017
Subject Name: Energy Conservation, and Audit(Departmental Elective - II)
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Discuss present energy consumption scenario of India. 03
(b) Discuss Following: 04
1) Commercial and Noncommercial energy

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2) Renewable and Nonrenewable energy
(c) Explain energy conservation Act 2001 and discuss the role plays of 07
BEE, state government and central government.

Q.2 (a) An electric heater of 250 V, 4 kW rating is used for hot water 03
generation. Find electricity consumption

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a) At the rated voltage per hour
b) At 230V for 3 hours
(b) A three phase, 10 kW motor has the technical specifications like 415V, 04
18.2 amps and 0.9 PF. Actual input measurement by an energy auditor
is found as 415 V, 12 amps and 0.7 PF. Which was measured with

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power analyzer device. Find the motor loading in percentage.
(c) What is energy audit? Explain detailed energy audit. 07

OR

(c) List the key instruments for energy audit & explain its function. 07

Q.3 (a) Define: Latent Heat of Fusion, Contract Demand and Load factor. 03

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(b) What are the disadvantages of ‘direct method’ of boiler efficiency 04
evaluation over ‘indirect method’?
(c) How to make lighting system of your college campus more efficient? 07

OR

Q.3 (a) Define: Time of Day Tariff, Specific Heat and Humidity. 03

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(b) Mention:the various sources of waste heat recovery. 04
(c) How to improve power factor and what are the impact of improve 07
power in electrical system.

Q.4 (a) What is Indian boiler regulation? 03
(b) Explain FRC boiler in detailed. 04

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(c) Explain Indirect method of energy efficiency calculate for furnace. 07

OR

Q.4 (a) List down energy conservation opportunities in refrigeration system. 03
(b) Define the following parameters 04
1) Excess Air

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2) Blow Down
(c) Which tool is used to represent difference between standard 07
consumption and actual consumption? Explain with sample graph.

Q.5 (a) Differentiate between steam turbines and gas turbines. 03
(b) How to save energy by substituting existing fuel? 04

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(c) Write short note on cogeneration plant. State features of cogeneration 07
plant of a sugar manufacturing industry.

OR

Q.5 (a) Explain components of compressed air system. 03
(b) Write energy saving opportunities in cooling towers. 04

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(c) Justify energy efficiency measures in the compressor. 07

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