Chhattisgarh Swami Vivekanand Technical University, Bhilai
Semester: B.E. VIII Sem. Branch: Mechanical Engg.
Subject: Refrigeration & Air Conditioning
Total Theory Periods: 50 Total Tutorial Period : 12
Total Marks in End Semester Exam: 80
Minimum number of class tests to be conducted: 2
Note : Refrigerant and Psychrometric Properties (Tables and Charts) by Jain Brothers
Publications are Permitted in the examination.
UNIT – I
Refrigeration and second law of Thermodynamics, Refrigeration effect and unit of Refrigeration, Heat
pump, reversed Carnot cycle.
Vapour Compression Refrigeration System
Analysis of simple vapour compression Refrigeration cycle by p-h and T-S diagram. Effect of operating
conditions, liquid vapour heat exchangers, actual refrigeration cycle.
Multiple Evaporator and compressor system.
Application, air compressor system, Individual compressor, compound compression, cascade system.
Application, air compressor systems, individual compressor, compound compression, cascade system.
UNIT – II
Gas cycle Refrigeration
Limitation of Carnot cycle with gas, reversed Brayton cycle, Brayton cycle with regenerative H.E.
Air cycle for air craft
Necessity of cooling of air craft, Basic cycle, boot strap, regenerative type air craft refrigeration cycle.
UNIT – III
Vapour Absorption System
Simple Vapour absorption system, Electrolux Refrigerator, Analysis of Ammonia absorption
refrigeration system, Lithium Bromide Absorption Refrigeration System.
Classification, Nomenclature, selection of Refrigerants, global warming potential of CFC Refrigerants.
Compressor, condenser, evaporator, expansion devices – types & working.
UNIT – IV
Psychrometric properties, psychometric relations, pyschrormetric charts, psychrometric processes,
cooling coils, By-pass factor and air washers.
Mechanism of body heat losses, factors affecting human comfort, effective temperature, comfort chart.
UNIT – V
Cooling load calculations
Internal heat gain, system heat gain, RSHF, ERSHF, GSHF, cooling load estimation, heating load
estimation, psychrometric calculation for cooling, selection of air conditioning, apparatus for cooling and
dehumidification, Air conditioning system
1. Refrigeration & Air Conditioning – Ahmadid, Amean – PHI
2. Refrigeration and Air Conditioning –C. P. Arora – TMH.
Refrigeration and Air Conditioning – Manohar Prasad – Newage International Pub
Refrigeration and Air Conditioning – Arora & Domkundwar – Dhanpat Rai & Sons
Refrigeration and Air Conditioning – P.L. Ballaney – Khanna