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Energy Management (October 2010)

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Total No. of Questions : 12] [Total No. of Pages : 2 [3864]-146 P1332 B.E. (Mechanical Engineering) ENERGY MANAGEMENT (402050) (2003 Course) Time : 3 Hours] [Max. Marks :100 Instructions to the candidates: 1) Answer any three questions from each Section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of electronic pocket calculator is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) Q2) a) b) Q3) a) b) Q4) a) b) Why should we conserve energy? What should be the energy strategy for the future of a nation? [9] Discuss environmental impacts due to conventional energy use. [9] OR Discuss the relevance of renewable energy for national energy security policy. [9] List out and explain energy efficiency benefits for industry. [9] How to conduct a detailed energy audit? [8] State and explain the functions of measuring instruments used for energy audit. [8] OR Define and explain the followings: [9] i) Return on Investment (ROI). ii) Net Present Value (NPV). iii) Internal Rate of Return (IRR). Explain Simple Payback Period method of financial analysis with its advantages and limitations. [7] P.T.O. Q5) a) b) Q6) a) b) Q7) a) b) Q8) a) b) Q9) a) b) Q10)a) b) Q11)a) b) Q12)a) b) Discuss the following terms for the efficient operation of compressed air system: [8] i) Quality of air. ii) Capacity control of compressor. iii) Piping layout. State any eight energy saving opportunities in compressed air system.[8] OR Explain in detail direct method and indirect method for finding out boiler efficiency. [8] [8] What are the benefits of condensate recovery? SECTION - II What are the benefits of power factor improvement? [9] What possible improvement measures you would look for in general lighting system. [9] OR State different desirable properties and selection criteria of refractory material. [9] Write short notes on: i) Economic thickness of insulation. ii) Energy efficient motors. [9] Explain importance of waste heat recovery. [8] What is cogeneration? Explain the concept of topping cycle and bottoming cycle. [8] OR Define and explain different terms used in performance assessment of water pumps. [8] Explain the following terms for waste heat recovery. i) Economizer. ii) Shell and Tube heat exchanger. [8] State different conservation opportunities in pumping systems. [8] Explain the importance of maintenance of heat exchanger surface in HVAC [8] and refrigeration systems. OR Suggest minimum ten tips for energy conservation in thermal power plant. [8] Discuss in brief different energy efficient technologies in electrical systems used in pumps and fans. [8] E [3864]-146 E 2 E

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Additional Info : 2003 Course
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