REFRIGERATION AND AIR CONDITIONING

Syllabus:

GAS CYCLE REFRIGERATION (06 Hours)

Air refrigeration system, Bell Colleman air cycle, Boot strap system, Aircraft refrigeration systems, Actual cycle, Ramming, Compression and Turbine efficiencies, Coefficient of performance.

VAPOUR COMPRESSION REFRIGERATION (09 Hours)

Analysis of vapour compression cycle, Losses and efficiencies of components, Factors affecting the performance of a simple vapour compression system, Heat balance, Multistage vapour compression system with flash intercooler, Multi evaporation system, Cascade refrigeration system

ABSORPTION REFRIGERATION (06 Hours)

Desirable properties of refrigerants and solvents, Thermodynamics analysis of vapour absorption System, Comparison between vapour absorption and vapour compression s ystem, Aqua-Ammonia and Lithium Bromide absorption system.

PSYCHROMETRY AND PSYCHROMETRIC PROCESSES (10 Hours)

Psychrometric properties, Psychrometers, Preparation of psychrometric charts, Enthalpy deviation, Psychrometric Processes - Mixing process, Sensible heating, Sensible cooling, Humidification, Dehumidification, Cooling and Dehumidification, Heating and humidification, Bypass factor, Apparatus dew point, Sensible heat factor, Air washer, Adiabatic humidification, Efficiency of h umidification, Summer and Winter air conditioning system.

LOAD CALCULATION (08 Hours)

Calculation of summer and winter loads, Heat gain through walls, roofs, floors, windows, and doors. 

AIR CONDITIONING SYSTEMS AND EQUIPMENTS (06 Hours)

Humidifiers, Air coolers, Dehumidifiers, Air cleaners, Impurities in air and air cleaners, Ducts, Pressure drop in ducts.

(Total Lecture Hours: 45 +Tutorial Hrs: 15)

PRACTICALS

1. To conduct performance test on vapour compression refrigeration system.

2. To study tools and instruments used in refrigeration and air conditioning

3. To determine psychrometric properties of air.

4. To conduct performance test on air conditioning system to find C.O. P and to determine the by pass factor of coil.

5. To conduct performance test on Ice plant.

6. To conduct performance test on Cold storage plant.

7. To conduct performance test on vapour absorption system - Electrolux- Domestic type.

8. To conduct performance test on desert cooler.

9. To study the domestic refrigerator.

10. To study the charging, testing, evacuating and pumping down to a refrigerant plant

BOOKS RECOMMENDED

1. Arora S.C. and Domkundwar S., “A Course in Refrigeration and Air Conditioning”, Dhanpat Rai & Sons, 2006.

2. Thrakeld J. L., “Thermal Environmental Engineering”, Prentice Hall, 2002.

3. Stoeaker W. F., “Refrigeration and Air conditioning”, Tata McGraw Hill, 2004.

4. Dossat R.J., “Principles of Refrigeration”, J ohn Wiley and Sons, 2000.

5. Arora C. P., “Refrigeration and Air conditioning”, Tata McGraw Hill, 2004.

6. Ananthanarayanan P. N., “Basic Refrigeration and Air Conditioning”, Tata McGraw-Hill, 2005.

Useful Links:

• Syllabus_PDF: Refrigeration and Air Conditioning Syllabus
• RAC_Lecture_1 (BM Sir)
• PSYCHROMETRY: THE STUDY OF MOISTURE IN AIR
• VARIOUS TERMINOLOGY USED IN PSYCHROMETRY
• Refrigeration-Air conditioning PPT
• SEE THIS RAC
• RAC_Notes_1_Rutvik_Patel
• RAC_Notes_2_Rutvik_Patel