ME 1701: REFRIGERATION AND AIR CONDITIONING 

Syllabus

Module I 
Principles of refrigeration-unit of refrigeration - capacity - Coefficient of Performance - refrigeration systems: Carnot refrigeration cycle - Steam jet refrigeration - Thermoelectric refrigeration - vortex tube - pulse tube - air refrigeration cycle boot strap & boot strap evaporating cooling - thermodynamic analysis of Bell- Coleman cycle 

Module II 
Vapour compression system - theoretical and practical cycles - simple and multi pressure systems - thermodynamic analysis - vapour absorption system - principle of operation of aqua - ammonia and lithium bromide - water systems - Electrolux system - comparison between vapour compression and absorption systems - refrigerants - thermodynamic, physical and chemical properties of refrigerants, selection criteria of refrigerants 

Module III 
System components - compressors - reciprocating compressors - single and multistage compressors - rotary compressors – centrifugal and axial flow compressors - screw type and vane type compressors - hermetic, semi hermetic and open compressors - condensers - water cooled and air cooled condensers - evaporative condensers - expansion devices - capillary tube - thermostatic expansion valve - float valves - evaporators - natural convection and forced convection coils - flooded evaporators - direct expansion coils 

Module IV 
Psychrometry - Psychrometric properties and processes - determination of air entering conditioned space - air conditioning systems – Summer and Winter air conditioning systems - central and unitary systems - human comfort - comfort chart and limitations - effective temperature - factors governing effective temperature. Cooling Load Calculation - various heat sources - design of air conditioning systems: duct design - air distribution 
systems - heating systems Note: Refrigeration Data Books are permitted for examination 

References: 
1) Dossat, Refrigeration and Air Conditioning 
2) Stoecker, Refrigeration and Air Conditioning, Tata McGraw Hill 
3) Jordan & Priester, Refrigeration and Air Conditioning, Prentice Hall. 
4) Arora, Refrigeration and Air Conditioning, Tata McGraw Hill. 
5) Norman Harris, Modern Air Conditioning Practice, McGraw Hill. 
6) R C Arora - Refrigeration and Air Conditioning, PHI

Type of Questions for University Exam.
Q 1.Eight short answer questions of 5 marks with two questions from each of the four modules. (8x5 = 40 marks) 
Q 2. to Q.5 : Two questions A & B of 15 marks from each modules with option to answer either A or B. (4x15 = 60 marks)