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2003 Course Energy Conservation (Elective I)

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Total No. of Questions :12] P1517 [Total No. of Pages :4 [3864]-327 B.E. (Chemical Engineering) ENERGY CONSERVATION (Elective - I) (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) Answer any three questions from each section. 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. Assume suitable data, if necessary. SECTION - I Q1) a) Data for a flat plate collector used for heating the buildings are given below: Factor Specification Location and latitude Baroda, 22o N Day and time January 1, 11:30 - 12:30 (IST) Annual Average intensity of solar radiation 0.5 langley/min Collector tilt Latitude + 15o No. of glass covers 2 Heat removal factor for collector 0.810 Transmittance of glass 0.88 Absorption of glass 0.90 Top loss coefficient for collector 7.88 W/m2 oC (6.80 kcal/hr. m2 oC) Collector fluid temperature 60 oC Ambient temperature 15 oC P.T.O. b) Calculate: i) Solar altitude angle. ii) Incident angle. iii) Collector efficiency. Discuss about solar distillation and solar drying? [8] [8] OR Q2) a) Explain principle and working of solar ponds with neat diagram? [8] b) Give the principle and application of the following energy sources: [8] i) Geothermal energy. ii) Tidal energy. Q3) a) Explain the concept energy plantation ? What are its advantages and disadvantages? [8] What are the different methods for hydrogen storage? Describe their advantages and disadvantages. [8] OR b) Q4) a) Discuss in detail the classification of Biomass Gasifiers. [8] b) Explain the factors considered while designing the optimum size of a biogas plant? [8] Q5) a) What are types of recuperators for waste heat recovery? Explain any two in detail? [10] Discuss the Heat transformers used to boost temperature of industrial waste heat? [8] b) OR Q6) a) b) Explain the advantages of cogeneration with example of sugar industry? [6] Write short note on following (any two): i) Direct contact heat exchangers. ii) Principle and Working of incinerator. iii) Thermal wheel. [12] SECTION - II Q7) a) Explain the energy performance assessment of Heat exchanger and Turbines (Gas, Steam)? [10] [3864]-327 -2- b) Justify that Fluidized bed combustion of coal is efficient method of combustion? [8] OR Q8) a) Explain with suitable diagram and description that Steam pressure reducing station help in energy optimization? [8] b) Following data are provided for a typical oil fired boiler. Find out the efficiency of the boiler by indirect method and Boiler Evaporation ratio. Type of boiler : Oil fired Ultimate analysis of Oil C : 84%, H2 : 12.0%, S : 3.0%, O2: 1% GCV of Oil : 10200 kcal/kg Steam Generation Pressure : 7 kg/cm2(g)- saturated Enthalpy of steam : 660 kcal/kg Feed water temperature : 60 oC Percentage of oxygen in flue gas : 7 Percentage of CO2 in flue gas : 11 Flue gas temperature (Tf) : 220 oC Ambient temperature (Ta) : 27 oC Humidity of air : 0.018 kg/kg of dry air. [10] Q9) a) Explain the energy conservation policy of State & Central Government? [8] b) Justify that Steam trap and Pressure Reducing Valves (PRV) are energy conservation devices? [8] OR Q10) a) Enlist the energy consumption units in petroleum refinery. Discuss how energy can be conserved? [8] b) Explain the features of energy conservation act of Govt. of India (2001)? [8] [3864]-327 -3- Q11) a) Explain benchmarking of energy consumption and plant energy performance (PEP)? [8] b) Distinguish between Preliminary Audit and Detailed Audit with suitable example? [8] OR Q12) Write short note on following (Any three) : [16] a) Condensate recovery systems. b) Sanky diagram and it s use. c) Energy conservation in paper and pulp industry. d) Hydrogen Technology Development in India. nnn [3864]-327 -4-

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