Energy Engineering - Dec 2014
Mechanical Engg. (Semester 5)
TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) With a neat sketch, explain the working of spreader striker. State the advantages and disadvantages(10 marks) 1 (b) With a neat sketch, explain hydraulic ash handling system.(6 marks) 1 (c) list the different types of fuel used for stream generation.(4 marks) 2 (a) Explain the neat sketch, working of Volex Boiler.(8 marks) 2 (b) Draw the neat sketch of Induced Draught System. Explain.(8 marks) 2 (c) What are super heaters and Economiser?(4 marks) 3 (a) Explain the necessity of cooling system in diesel engine. With the help of neat sketch, explain thermostat cooling and thermosiphon cooling.(8 marks) 3 (b) Draw schematic layout of diesel power plant and explain function of the components.(12 marks) 4 (a) Classify Hydro electric power plant.(4 marks) 4 (b) Explain with neat sketches , any three different types of surge tank.(6 marks) 4 (c) The run-off data of river at a particular site is tabulated below:
Mean Discharge in millions
Mean Discharge in millions
i)Draw hydrograph and find the mean flow. ii) Draw the flow duration curve. Iii) Find the power in MW available at mean flow, if the head available is 100m and overall efficiency of generation is 80%.(10 marks) 5 (a) With the help of neat diagram, explain the working of Liquid Metal Cooled Reactor.(8 marks) 5 (b) Explain about disposal of solid, liquid and gaseous wastes produced by Nuclear Power Plant.(7 marks) 5 (c) Explain advantage and disadvantage of Nuclear Power point.(5 marks) 6 (a) Draw a neat sketch, explain Solar Pond Electric Power Point. Draw concentration and temperature profile.(8 marks) 6 (b) Briefly explain the working of solar cell.(4 marks) 6 (c) Wind blows with velocity of 16 m/s at 15°C. The turbine diameter is 115m with operating speed of 40 RPM at maximum efficiency. Assume 1 standard atmospheric pressure and propeller wind turbine. Calculate the following:
i) Total power density in the wind stream ii) Maximum obtainable power density iii) Reasonably obtainable power density \eta =35%. iv) Total power. v) Torque and axial thrust.(8 marks) 7 (a) With a neat sketch and TS diagram, explain closed cycle OTEC.(7 marks) 7 (b) Draw a neat sketch and explain the working of double basin tidal power plant.(6 marks) 7 (c) With aneat sketch, explain the working of Vapour dominated- total flow concept Geothermal system.(7 marks) 8 (a) Explain the factors affecting Biogas generation.(10 marks) 8 (b) With a neat sketch , explain the working of Updraft gasifier. Mention the temperature ranges.(7 marks) 8 (c) Write a note on Energy plantation(3 marks)