JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Refrigeration Equipment & Application Elementary knowledge of refrigeration & air conditioning equipments e.g compressors, condensers, evaporators & expansion devices, Air washers, Cooling towers & humidifying efficiency, Food preservation, cold storage, Refrigerate Freezers, Ice plant, Water coolers, Elementary knowledge of transmission and distribution of air through ducts and fans, Basic difference between comfort and industrial air conditioning.

UNIT - II

Erection of R & AC Systems: Erection methodology, foundation, padding, network analysis , critical path, interconnections; safety precautions, air handling equipments, locations in the systems, corrosion, noise, vibration monitoring and control.

UNIT - III

Testing of Equipments: Testings/ISI standards, testing of compressors, condensers, evaporators, and cooling towers. Testing of control systems, circuitry and trouble shoot, condition monitoring.

UNIT - IV

Preventive Maintenance: TPM Principles, Corrective and preventive measures, Reliability analysis, Signature analysis, Different types of preventive maintenance procedures, Practical hints, Failure Mode and Effect Analysis, Problem Solving Techniques.

UNIT - V

Maintenance Aspects: Maintenance procedures, leak detection, vacuumising, charging, trial run, prevention, lubrication, different methods. Studies on different maintenance schedules followed by various industries.

REFERENCES:

• 1. Robert C. Rosciler, HVAC Maintenance, and operations Hand Book, McGraw. Hill, 1997.
• 2. Althouse A.D. and Turnquist C. H., Modern Refrigeration and Air conditioning, Good Heart- Wilcoz Co Inc., 2004.
• 3. ISHRAE Hand book on Refrigeration & Air conditioning, ISHRAE Bangalore, 1998.
• 4. Nelson C. W., Commercial and Industrial Refrigeration, McGraw-Hill, 1982.
• 5. Reed G. H., Refrigeration, A Practical Manual, Applied Science Publishers Ltd., London, 1982.
• 6. Russel E. Smithy, Electricity for Refrigeration, Heating and Air-conditioning, Duxbury Press, Massachusetts, 1980. I Year - II Sem. M. Tech (HV & AC) REFRIGERATION & AIR CONDITIONING SIMULATION LAB
• 1. Simulation of Refrigeration loops
• 2. Simulation of Air conditioning loop
• 3. Simulation of heat pump system
• 4. Simulation of refrigerant loop using alternate refrigerants
• 5. Simulation of air conditioning loop using alternate refrigerant
• 6. Sizing and optimization of components in refrigerant loop
• 7. Simulation of controls in refrigeration & Air conditioning loop
• 8. Cooling load evaluation for different applications, viz., 100% fresh air, recirculated and by pass air
• 9. The equipment may be conducted using refrigerant & air-conditioning simulation software.