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Alternative Energy Sources (Elective I) (April 2010)

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Total No. of Questions : 11] P1555 [Total No. of Pages : 3 [3764]-137 B.E. (Mechanical) ALTERNATIVE ENERGY SOURCES (2003 Course) (Elective - I) (402045) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) Answer three questions from Section - I and three questions from Section - II. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator is allowed. SECTION - I Q1) a) Describe the solar chimney power plant and state its practical limitations.[8] b) Calculate the hour angle at Sunrise and Sunset on June 10 and December 21 for a surface inclined at an angle of 10 and facing due south. The surface is located in Sangli (17 N, 75 E). [8] OR Q2) a) Write a note on low temperature power generation cycle using flat plate collectors. Also write the experimental investigations in India. [8] b) Explain the following terms in solar radiation geometry with suitable diagrams. [8] i) Lattitude. ii) Declination. iii) Surface Azimuth Angle. iv) Hour Angle. Q3) a) Explain how transmissivity of the cover system of a collector can be obtained. [8] b) Write a note on passive space heating by solar energy. [8] OR P.T.O. Q4) a) Write a note on - Effects of various parameters on liquid flat plate collectors efficiency. [8] b) Estimate Hourly beam, diffuse and global radiations by ASHRAE model using following data : [8] Location : Nagpure (21 06 N, 79 03 E). Day : June 19, 1968. Time : 0900-1000 h (LAT). Constants : A = 1092 w/m2, B = 0.185, C = 0.137 Q5) a) Write advantages of concentrating solar collectors and explain any one in details. [8] b) Explain the principal of working of solar ponds. Write experimental investigations on solar ponds in India. [10] OR Q6) Write notes on : [18] a) Solar stills. b) Materials used for solar collectors. c) Heliostats. SECTION - II Q7) a) Derive an expression for efficiency of propeller type wind turbine. Also find limiting value of efficiency of wind turbine. [8] b) Write a note on solar photovoltaic cell. [8] OR Q8) a) Explain different types of wind mills. [8] b) Write a note on micro Hydel power plants. [8] Q9) a) Explain various types of geothermal power plants. [8] b) Explain suitable site requirements for tidal energy power plants. Which Indian costal regions are suitable for tidal energy power plants. [8] OR Q10) a) How ocean thermal energy power plants works? b) Explain different types of fuel cells? Explain working of any one. [3764]-137 2 [8] [8] Q11) Write a note on any three of following : a) Dome type biogas plant. b) Biomass gasification. c) Environment protection norms ISO 14000. d) Biogas for diesel engine. [3764]-137 3 [18]

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Additional Info : 2003 Course
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