Course

Module-1

History of refrigeration, Refrigeration cycles: vapour compression cycle and vapour absorption systems. Thermodynamic analysis of cycles. System components : Refrigerant Compressors-Reciprocating, Hermetic, Rotary, Centrifugal Scroll Compressors -Comparison, Construction and Operation characteristics. Evaporators- DX coil, flooded type Chillers, Condensing Units and Cooling Towers.

Module-2

Refrigerants : Desirable properties, Classification, Designation, Alternate Refrigerants, Global Warming Potential & Ozone Depleting Potential aspects. Expansion devices: Automatic Expansion Valves, Capillary Tube & Thermostatic Expansion Valves. Cycling controls and system balancing : Pressure and Temperature controls, Range and Differential settings. Selection and balancing of system components -Graphical method

Module-3

Psychrometry: Moist air behaviour – Psychometric chart – Different Psychometric process and their analysis. 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.

• CO1: Identify the suitability of refrigeration systems
• CO2 : Select refrigerants and components like evaporator, compressor, condenser, expansion devices etc. based on operational characteristics
• CO3 : Design of refrigeration and air-conditioning systems using fundamentals of heat and mass transfer principles
• CO4 : Evaluate the performance of an air-conditioning system
• CO5 : Estimate cooling/heating load for given application

• Ramesh Chandra Arora. Refrigeration and Air Conditioning, Prentice HallIndia,2015.
• Stocker F. and Jones J.W. Refrigeration & Air Conditioning – Mc GrawHill,1985.
• Dossat R.J. Principles of Refrigeration, John Wiley,1989.
• Goshnay W.B. Principles and Refrigeration, Cambridge University Press,1982.