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2003 Course Non Conventional Energy Sources

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Total No. of Questions :12] P1116 [Total No. of Pages : 3 [3864] - 162 B.E. (Mech. S/W) NON CONVENTIONAL ENERGY SOURCES (402065) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer three questions from section I and three questions from section II. 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 logarithmic tables, slide rule, Mollier Chart, electronic pocket calculator and steam tables is allowed. SECTION - I Q1) a) What is meant by renewable energy sources? Explain in brief these energy sources with special reference to Indian context. [9] b) Discuss the merits and demerits of alternative energy sources over the currently used energy sources. [8] OR Q2) a) Define Zenith angle, Solar Azimuth angle, Declination angle, Hour angle. Determine the local solar time and declination at a location latitude 23015 N, Longitude 77o30 E at 12.30 IST on June 19. Equation of time correction is given from standard table or chart = - (1 01 ), take standard time longitude = 82o30 . [9] b) What is the difference between a Pyrheliometer and a Pyranometer? Explain the working of instrument used for measurement of global radiation of sun. [8] P.T.O. Q3) Explain the effects of various parameters affecting the performance of flat plate collectors and what are the measure taken to maximize the performance. [17] OR Q4) a) Discuss in brief the applications of solar air heating. [6] b) Differentiate between active and passive solar heating system. [4] c) Explain tilt factor for beam radiation, diffuse radiation and reflected radiation and write their expression for the case of tilted surface facing due south (i.e. = 0). [7] Q5) a) Write the limitations of flat plate collectors and advantages of concentrating solar collectors. [6] b) Explain optical efficiency, aperture width, concentration ratio and acceptance angle in connection with concentrating collectors. [4] c) Explain cylindrical parabolic concentrator with neat sketch. [6] OR Q6) Write short notes on [16] a) Solar pond as energy storage. b) Solar stills. c) Heliostats. d) Materials for concentrators and reflecting surfaces. SECTION - II Q7) What is solar cell? Explain the photovoltaic principle. Describe a basic photovoltaic system for power generation. [17] OR Q8) What is the basic principle of wind energy conversion? Describe the main consideration in selecting a site for wind generators. Explain with neat sketch wind electric generation system. [17] Q9) a) What is hydrothermal resource and explain vapour dominated hydrothermal power plant with neat sketch. [9] b) Explain the principle of operation of tidal power plant. Derive the expression for tidal energy per tidal cycle for a single pool, single effect tidal system. [8] [3864]-162 2 OR Q10)a) b) Q11)a) b) What are the main types of OTEC power plats? Describe their working in brief with sketch. [9] What is fuel cell? Explain the principle of operation of fuel cell. [8] Describe floating dome type of biogas plant. State advantages and limitations of floating drum type and fixed dome type biogas plant. [8] Explain the methods of obtaining Energy from biomass. [8] OR Q12)Write short notes on following: [16] a) Biogas for diesel engine. b) Biomass gasification. c) Micro Hydel power plant. d) Environmental protection norms ISO 14000. jjj [3864]-162 3

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