Sathyabama Institute of Science and Technology B.E. - Mechanical Engineering SMEA3006 Refrigeration and Air-conditioning Syllabus

SATHYABAMA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL OF MECHANICAL ENGINEERING

SMEA3006 REFRIGERATION AND AIR-CONDITIONING
L T P Credits Total Marks
3 * 0 3 100

UNIT 1 BASICS OF REFRIGERATION 9 Hrs.
Definition and methods, Unit of refrigeration, COP, EER, Carnot Principle, Heat pump and Refrigerator, Air Refrigeration
System, Reversed Brayton cycle– Quantitative treatment, Aircraft refrigeration system, Refrigerants properties, Types,
Selection criteria, Designation,Oil Compatibility, Eco Friendly Refrigerants, Environmental Impact,Ozone depletion potential
and Global warming potential, Montreal / Kyoto protocols.

UNIT 2 VAPOUR COMPRESSION REFRIGERATION 9 Hrs.
Simple and actual VCR cycle, T-s and p-h representation, Effect of Sub cooling and superheating – Quantitative treatment,
Two stage compression, flash chamber, Intercooler. Compressors: single and multistage, Hermetic, Screw, Vane and
Centrifugal compressors, Condensers and evaporators; Expansion devices, Cooling towers, types –Qualitative treatment
only.

UNIT 3 NON-CONVENTIONAL REFRIGERATION 9 Hrs.
Vapour absorption refrigeration, importance, Principle of Operation of Ammonia-Water, Lithium Bromide-Water VAR
systems, Comparison of VCR and VAR systems, merits over VCR system, Electrolux System, Steam ejector system.
Introduction to adsorption system, Thermoelectric, Vortex tube and pulse tube refrigeration, Descriptive study of Low
temperature refrigeration, Joule Thomson effect, Applications of cryogenics – Qualitative treatment only.

UNIT 4 PSYCHROMETRICS AND AIR CONDITIONING 9 Hrs.
Psychrometry properties, charts, processes and relations, Gibbs-Dalton’s law,Adiabatic mixing of two streams, Human
comfort , factors affecting comfort, Comfort chart, Ventilation requirement, Comfort air conditioning, Air conditioning loads,
load estimation, Solar radiation, infiltration and ventilation, Air washer; BPF, ADP temperature, RSHF, GSHF, ERSHF –
Quantitative treatment.

UNIT 5 AIR CONDITIONING SYSTEMS 9 Hrs.
Summer, winter and central air conditioning systems. room air conditioners, packaged air conditioning plant, central air
conditioning systems, split air conditioning systems Ducts, types, various types of losses of fluid flow in ducts, Methods of
duct design, arrangement system. Air distribution system, Fans and blowers, filters; sources of noise in AC equipments and
methods to control noise; Refrigeration and air conditioning controls: pressure, humidity, temperature sensors; safety
controls; actuators.
Max. 45 Hrs.

COURSE OUTCOMES
On completion of the course, student will be able to
CO1 - Understand the various types of refrigeration systems and learn the classification and properties of refrigerants.
CO2 - Analyze the performance of refrigeration cycles and various components used in the cycles.
CO3 - Describe the various refrigeration concepts other than the vapour compression cycle.
CO4 - Understand the Psychrometric chart and processes in design the air conditioning and cooling load calculations.
CO5 - Analyze the Air Conditioning equipments, air distribution equipments and their applications.
CO6 - Apply the knowledge gained in various refrigeration and air conditioning systems.

TEXT / REFERENCE BOOKS
1. Refrigeration and Air conditioning, Manohar Prasad- New Age International, 3rd Edition, 2011.
2. Refrigeration and Air Conditioning , C. P. Arora, Tata McGraw-Hill Education, 3rd Revised Edition, 2010.
3. Principles of Refrigeration, Roy J. Dossat, Pearson Education, 5th Edition, 2012.
4. Basic Refrigeration and Air Conditioning, P. N. Ananthanarayanan, TMH, 4th Edition, 2013.
5. Refrigeration and Air conditioning, W.F.Stoeker, Tata McGraw-Hill, 2nd Edition, 2010.
6. ASHRAE Handbook (Fundamentals) 2018.

END SEMESTER EXAMINATION QUESTION PAPER PATTERN
Max. Marks: 100 Exam Duration: 3 Hrs.
PART A: 10 Questions of 2 marks each – No choice 20 Marks
PART B: 2 Questions from each unit of internal choice, each carrying 16 marks 80 Marks