GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Code: 171907
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VII (OLD) EXAMINATION — SUMMER 2019Date: 10/05/2019
Subject Name: Energy Conservation And Management
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Write note on ‘Indian Energy scenario. | 07 |
| (b) Define energy security. Enlist different strategies to achieve it and discuss role of energy conservation to achieve energy security. | 07 | |
| Q.2 | (a) Define: Power factor, Load factor, Specific heat, Latent heat of fusion, Humidity, Gross calorific value, Relative density | 07 |
| (b) Give various electricity saving techniques. | 07 | |
| OR | ||
| (b) Explain various basic electrical parameters to calculate electricity tariff for an industry. | 07 | |
| Q.3 | (a) Define energy management. Which are the types of energy audit? Explain detailed energy audit. | 07 |
| (b) Discuss the role of Energy service companies (ESCOs). | 07 | |
| OR | ||
| (a) Enlist different financial analysis techniques used in energy management. Explain Simple payback period and present value of money method. | 07 | |
| Q.4 | (a) What is the net present value (NPV) of a project for a period of 3 years which requires an investment of Rs.10,00,000 and the benefits received for the first year is Rs. 30000, for the second year is Rs.-50000 and for third year is Rs. 45000. Take interest rate as 8 %. | 07 |
| (b) State key elements of Energy monitoring and targeting system. Also discuss its benefits. | 07 | |
| OR | ||
| (a) Explain the importance of CUSUM chart and its procedure to analyze the case with help of diagrams. | 07 | |
| Q.5 | (a) Which are the cogeneration plants? Explain bottoming cycle with diagram. | 07 |
| (b) Explain various sources of heat recovery. | 07 | |
| OR | ||
| (a) Explain in brief Energy efficiency versus Energy conservation. Write step wise procedure to calculate Boiler efficiency. | 07 | |
| (b) Give various tips for energy savings in thermal utility devices like compressor, pump and refrigeration system. | 07 | |
| OR | ||
| (a) What are the characteristics of an Efficient Furnace? Write the formula for evaluating the thermal efficiency by direct method. | 07 | |
| (b) With a neat sketch explain Gas turbine co-generation plant. | 07 | |
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