UNIT – I Air Refrigeration System, Vapour Compression System, Multi-stage compression and Multi-evaporator systems

1.1 Air Refrigeration System : Introduction, Unit of refrigeration, Coefficient of performance

1.2 Reversed Carnot Cycle, Temperature limitations, maximum COP

1.3 Bell Coleman air cycle, Simple Air Cycle System for Air-craft with problems.

1.4 Vapour Compression System: Analysis of theoretical vapour compression cycle ,Super heat,Sub cooling,Performance calculations

1.5 Representation of cycle on T - S and p - h diagram

1.6 Simple saturation cycle, sub-cooled cycle and super-heated cycle, Effect of suction and discharge pressure on performance

1.7 Actual vapour compression cycle. Problem illustration and solution.

1.8 Multi-stage compression and Multi-evaporator systems : Different arrangements of compressors and inter-cooling

1.9 Multistage compression with inter-cooling,Condition for minimum work input in a multistage compression process

1.10 Multi-evaporator system, Dual compression system, Simple problems

UNIT – II Vapour Absorption System, Thermoelectric Refrigeration, Refrigerants

2.1 Vapour Absorption System: Simple Ammonia - absorption system

2.2 Improved absorption system, Analysis of vapour absorption system (Specifically of analyzing coloumn and rectifier)

2.3 Electrolux / Three fluid system

2.4 Lithium-bromide-water vapour absorption system, comparison of absorption system with vapour compression system. Simple Problems and solution.

2.5 Thermoelectric Refrigeration: Basics and Principle. Defining the figure of Merit

2.6 Refrigerants ; Classification of refrigerants and its degignation- Halocarbon (compounds, Hydrocarbons, Inorganic compounds, Azeotropes, Properties of refrigerants, comparison of common refrigerants, uses of important refrigerants, Brines. Alternative refrigerants (Organic and inorganic compounds).

UNIT – III Psychrometrics , Requirements of comfort air conditioning, Air Conditioning System

3.1 Psychrometrics : Properties of air-vapour mixture, Law of water vapour-air mixture, Enthalpy of moisture

3.2 Psychrometric chart, simple heating and cooling,Property calculations of air vapour mixtures by using chart and expressions

3.3 Humidification, De-humidification, Mixture of air streams

3.4 Requirements of comfort air conditioning : Oxygen supply, Heat removal, moisture removal, air motion, purity of air

3.5 Thermodynamics of human body, comfort and comfort chart

3.6 Effective temperature, factors governing optimum effective temperature

3.7 Air Conditioning System : Process in air conditioning, Summer air conditioning

3.8 Winter air conditioning and year round air conditioning

3.9 Cooling load calculations