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Course Detail

Course Name Refrigeration and Air Conditioning
Course Code 15MEC256
Program B. Tech. in Mechanical Engineering
Year Taught 2019


Unit 1

Refrigeration cycles: Vapour Compression Cycle – Simple saturated vapour compression cycle. Thermodynamic analysis of cycles. Refrigerant Classification – Designation – Alternate Refrigerants. Global Warming Potential & Ozone Depleting Potential aspects, vapour absorption systems.

System components: Refrigerant Compressors – Reciprocating, Open type & Hermetic type, Screw Compressors and Scroll Compressors – Construction and Operation characteristics. Evaporators – DX coil, Flooded type Chillers.

Unit 2

Expansion devices – Automatic Expansion Valves, Capillary Tuber & Thermostatic Expansion Valves. Condensing Units and Cooling Towers. Cycling controls and system balancing: Pressure and Temperature controls. Range and Differential settings.

Selection and balancing of system components – Graphical method.

Psychrometry: Moist air behaviour – Psychrometric chart – Different Psychrometric process analysis.

Unit 3

Air conditioning: Summer and Winter Air conditioning – Cooling Load Calculations – Air Distribution Patterns – Dynamic and Frictional Losses in Air Ducts – Equal Friction Method – Fan Characteristics in Duct Systems.

Text Books

  • Stocker W. F. and Jones J. W. – ‘Refrigeration & Air Conditioning’ – McGraw Hill – 1985


  • Dossat R. J. – ‘Principles of Refrigeration’ – John Wiley – 1989
  • Goshnay W. B. – ‘Principles and Refrigeration’ – Cambridge University Press – 1982
  • Prasad M. – ‘Refrigeration and Air Conditioning’ – Wiley Eastern -1995

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