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Refrigeration Technology
Elective-I (502104-B)
Teaching Scheme: Examination
Lecture: 3 hrs/week Paper: 100 Marks
Paper Duration: 3 hrs.
1. Vapour Compression refrigeration: Multi-evaporator system; Multi expansion
system; Cascade systems; Study of P-h; T-s; h-s and T-h charts for various
refrigerants, Concept of Heat Pump
2. Refrigerant: Designation, selection, desirable properties, refrigerant blends, secondary refrigerants, refrigerant recycling, reclaim and charging, alternative refrigerants, refrigerant-lubricant mixture behavior, ODP, GWP concepts
3. Vapour absorption refrigeration: Standard cycle and actual cycle, thermodynamic analysis, Li-Br-water, NH3-water systems, Three fluid absorption systems, half effect,single effect, single-double effect, double effect, and triple effect system
4. Non-convention refrigeration system (Principle and thermodynamic analysis only):
Thermoelectric refrigeration, thermo-acoustic refrigeration, adsorption refrigeration, steam jet refrigeration, vortex tube refrigeration, and magnetic refrigeration.
5. Compressor rating and selection- reciprocating, screw, Scroll and centrifugal
compressors based on applications
6. Evaporators: types, thermal design, effect of lubricants accumulation, draining of lubricants, selection and capacity control
7. Condenser: types, thermal design, purging, selection and capacity control
8. Selection of expansion devices, Design of refrigerant piping refrigeration system controls and safety devices, Solenoid valves, suction and evaporator pressure regulators, Thermal Insulation
9. Motor selection: Single phase, Three phase, Starters, Constant speed and Variable speed drive
10. Associated devices: high pressure receiver thermal design of low pressure receiver,accumulator, Filters, driers, oil separators, relief valves, safety valves, high and low pressure cut out, thermostats, water regulators etc.
11. Case studies to be dealt with selection and design of various components for various Industrial refrigeration applications: Cold storage, Process applications - textile, pharmaceuticals, chemical, transport, etc.
( Question Paper- 50% to 60% of maximum marks are kept for the questions asked
on System Design and not any theory.)
Term Work
1. Trial on VCC as Heat pump
2. Trial on VCC- Effect of condensing and evaporator temperature on Performance
3. Visit report on (Any Two)
(a) Cold Storage
(b) Ice Plant
(c) Dairy
(d) Pharmaceutical
4. Design of Vapor Absorption System 100 kW or 200 kW or 300 kW etc.
Recommended Books
1. R.J. Dossat, Principles of refrigeration, Pearson Education Asia
2. C.P. Arora, Refrigeration and Air-Conditioning
3. Stoecker and Jones, Refrigeration and Air-conditioning
4. Jordan and Priester, Refrigeration and Air-conditioning
5. A.R. Trott, Refrigeration and Air-conditioning, Butterworths
6. J.L. Threlkeld, Thermal Environmental Engineering, Prentice Hall
7. W.F. Stoecker, Industrial Refrigeration Handbook, McGraw-Hill
8. John A. Corinchock, Technician’s guide to Refrigeration systems, McGraw-Hill
9. P.C. Koelet, Industrial Refrigeration: Principles, design and applications, Mcmillan
10. ASHRAE Handbook (i) Fundamentals (ii) Refrigeration
11. ISHRAE handbooks
12. ARI Standards
13. Refrigeration Handbook, Wang, Mc Graw Hill, Int.
For more details, visit http://www.unipune.ernet.in/stud_info/Syllabi/Syllabus_2008.html
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