EX-603-B Energy Conservation and Management - Jun 2025 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aDefine energy audit. What are its types and significance in energy management?
   How to answer

   • Definition of energy audit as systematic inspection and analysis of energy use
   • Types: preliminary/walk-through, general/mini, detailed/comprehensive audit
   • Significance: identifies losses, benchmarks, recommends conservation measures
   • Role in energy management: cost reduction and efficiency improvement
2. 7 Marks
   bDeduce the qualities and functions of an energy manager.
   How to answer

   • Qualities of energy manager: technical knowledge, analytical, managerial skills
   • Functions: audit planning, monitoring, data analysis
   • Functions: recommending and implementing conservation measures
   • Reporting and coordination with management
3. 7 Marks
   aGive detailed analysis of I and II law of thermodynamics with an examples.
   How to answer

   • Statement of First Law of Thermodynamics with energy conservation equation
   • Statement of Second Law with Kelvin-Planck and Clausius statements
   • Examples: engine, refrigerator, heat transfer processes
   • Relevance to energy audit and efficiency
4. 7 Marks
   bExplain thermal energy audit in air conditioning.
   How to answer

   • Concept of thermal energy audit in HVAC/air conditioning
   • Steps: measurement of cooling load, COP, air flow, temperatures
   • Identification of losses: leakage, poor insulation, inefficient equipment
   • Recommendations for savings
5. 7 Marks
   aWhat is load curve analysis and how is it used in Demand Side Management (DSM)?
   How to answer

   • Definition of load curve and load curve analysis
   • Parameters derived: load factor, demand factor, diversity factor
   • Use in DSM: peak shaving, load shifting, valley filling
   • Benefits for utility and consumer
6. 7 Marks
   bExplain different types of tariffs used for electricity consumers.
   How to answer

   • Need for tariffs in electricity pricing
   • Types: flat, block, two-part, maximum demand, TOD/time-of-use, power factor tariff
   • Features of each tariff with example
   • Selection for different consumer categories
7. 7 Marks
   aWhat is energy efficient motors and how do they differ from standard motors?
   How to answer

   • Definition of energy efficient motors
   • Design differences: better materials, reduced losses, higher efficiency
   • Comparison with standard motors in efficiency, cost, performance
   • Applications and savings potential
8. 7 Marks
   bDiscuss the methods to improve power factor.
   How to answer

   • Causes and effects of low power factor
   • Methods: capacitor banks, synchronous condensers, phase advancers
   • Location and sizing of correction equipment
   • Benefits: reduced losses, improved voltage, lower tariff
9. 7 Marks
   aHow can energy conservation be implemented in electrical systems for buildings, including heating and lighting?
   How to answer

   • Energy use in buildings: lighting, heating, HVAC
   • Conservation measures: efficient lighting, controls, insulation
   • Use of BMS, daylighting, efficient heating systems
   • Expected savings and payback
10. 7 Marks
    bExplain the principle of co-generation and its benefits for energy efficiency.
    How to answer

    • Principle of co-generation: simultaneous heat and power generation
    • Types: topping and bottoming cycles
    • Benefits: higher overall efficiency, fuel saving, emission reduction
    • Applications in industry and buildings
11. 7 Marks
    aWhat is the role of predictive and preventive maintenance in energy auditing?
    How to answer

    • Definition of predictive vs preventive maintenance
    • Role in identifying energy wastage and equipment deterioration
    • Techniques: vibration, thermography, monitoring
    • Impact on audit recommendations and savings
12. 7 Marks
    bDescribe waste heat recovery techniques and their application in thermal systems.
    How to answer

    • Concept of waste heat and its sources
    • Techniques: recuperators, regenerators, economisers, heat pipes, waste heat boilers
    • Application in thermal systems: furnaces, engines, process industries
    • Benefits and limitations
13. 7 Marks
    aDiscuss the energy conservation processes in sugar industry.
    How to answer

    • Energy intensive steps in sugar industry: crushing, evaporation, crystallization
    • Conservation: bagasse cogeneration, efficient boilers, vapour bleeding
    • Steam and electricity optimization
    • Case benefits: self-sufficiency and surplus power
14. 7 Marks
    bDiscuss the use of agriculture waste in energy conservation.
    How to answer

    • Types of agricultural waste: straw, husk, bagasse, stalks
    • Conversion routes: combustion, gasification, briquetting, biogas
    • Use for heat, power and fuel substitution
    • Benefits for conservation and rural energy
15. 14 Marks
    Write short notes (any two)

    1. i)Energy auditing instruments
    2. ii)Disadvantages of poor power factor
    3. iii)Payback period
    4. iv)VSD
    How to answer

    • Brief definition and purpose of each selected topic
    • Key instruments/methods/formulas involved
    • Relevance to energy audit and conservation
    • Advantages/limitations with example