IOEStudent HubInstitute of Engineering
Home/Courses/ENME203/Syllabus
ENME203

Engineering Thermodynamics II

Syllabus

  1. Boilers (8 hours)
    1. Classification and applications of boilers
    2. Comparison of fire tube and water tube boiler
    3. Requirements of an ideal boiler
    4. Boiler mountings and accessories: water level indicator, feed check valve, blow-off cock, steam separator, safety valves, feed pump, air preheater, super heater and economizer
    5. Water conditioning: water problems and benefits of water conditioning, types and causes of scale and deposits, scale deposit prevention methods
  2. Air Compressor (4 hours)
    1. Classification and applications
    2. Reciprocating air compressors: types, construction, working principle and performance
    3. Centrifugal air compressors: types, construction, working principle and performance
    4. Construction and working of rotary, vane and roots compressors
    5. Multi stage compression and its advantages, inter-cooling, work done of multi-stage compression
  3. Condensers (3 hours)
    1. Classification of condenser, elements of a condensing plant
    2. Condenser performance parameters
    3. Comparison of jet and surface condenser
    4. Condenser vacuum and its efficiencies
  4. Refrigeration Systems (8 hours)
    1. Definition and applications of refrigeration
    2. Simple and modified vapor compression refrigeration cycles: ideal and actual cycles, representation on P-h and T-s diagrams, work done and coefficient of performance, vapor absorption refrigeration system, basic and practical vapor absorption, Electrolux vapor absorption and air refrigeration system
    3. Refrigerants: introduction, classifications, desirable properties of an ideal refrigerant, properties and uses of common refrigerants, ozone depletion potential and global warming potential
  5. Air-Conditioning (9 hours)
    1. Definition and scope of air-conditioning
    2. Psychometrics and properties of air
    3. Psychometric chart and various processes: sensible heating, sensible cooling, cooling with dehumidification, cooling with humidification, heating with dehumidification, heating with humidification, adiabatic mixing of two streams of moist air
    4. Types of air-conditioning systems: direct expansion, split type, central A/C, variable air flow and variable refrigerant volume system, all air, all water, air-water systems, merits and demerits
    5. Components of air-conditioning systems: ducts, fans, grills, registers, diffusers, balancing dampers, air filters, air handling units, fan coil units, humidifiers and dehumidifiers
    6. Heating and cooling load calculation
  6. Vapour Power Cycles (5 hours)
    1. Rankine cycle: ideal and real cycle, components, working mechanism, efficiency calculation, operational parameters affecting efficiency, reheat cycle and regenerative cycle
    2. Combined Rankine cycles: working mechanism and component diagram
    3. Co-generation cycle: types, working mechanism and component diagram
    4. Working mechanism and classification of steam engines
    5. Essential components of steam power plant
    6. Layout of steam power plant
  7. Other Power Cycles (8 hours)
    1. Air standard cycles
    2. Brayton cycle: working principle, component diagram and efficiency; analysis of closed and open cycles; cycle with intercooling, reheating and regeneration; gas turbine power plant layout and components
    3. Otto cycle: working principle, component diagram and efficiency
    4. Diesel cycle: working principle, component diagram and efficiency; essential components and plant layout of diesel power plant
    5. Dual cycle

Practicals

  1. Study on performance of boiler and its mountings and accessories, energy and mass balancing
  2. Performance analysis of air-compressor
  3. Performance of vapor compression refrigeration system and Electrolux type refrigerator
  4. Air-conditioning processes: cooling with dehumidification and cooling with humidification; heating with dehumidification and heating with humidification
  5. Air-conditioning process: mixing of two streams of moist air
  6. Performance of cooling tower
  7. Study of components of central air-conditioning systems

Evaluation

Final exam questions cover all chapters. Approximate marks distribution (total 60 marks over 45 hours):

  1. Boilers: 10 marks
  2. Air Compressor and Condensers: 9 marks
  3. Refrigeration Systems: 11 marks
  4. Air-Conditioning: 12 marks
  5. Vapour Power Cycles: 8 marks
  6. Other Power Cycles: 10 marks