DIPLOMA REFRIGERATION AND AIR CONDITIONING 6TH SEM MECH

REFRIGERATION AND AIR CONDITIONING

Courtly:
dte board
Subject Title                           :           Refrigeration and air conditioning
Subject Code                         :           M-
Hours Per Week                    :           04
Hours Per Semester              :           64

TOPIC ANALYSIS

SL.No
Major Topics
Hours Allotted
Weightage of Marks
                                                              PART-A                                           
1
Introduction to Refrigeration
07
17
2
Refrigeration Cycles
12
31
                                                              PART-B                  
3
Refrigeration equipments
08
20
4
Refrigerants and lubricants
04
10
5

Refrigeration flow controls

06
20
                                                              PART-C                  
6
Application of Refrigeration
05
10
7
Air conditioning
11
31
8
Refrigeration and Air-conditioning tools
03
06
9
 Environmental concerns and Industry innovations
05
-
10
Tests
03
-

Total
64
145

OBJECTIVES

On the completion of the course the students should be able to:

1. Understand the principle of refrigeration and its effects.
2. Appreciate the concept of various refrigeration systems.
3. Study of refrigeration equipments such as Compresor, condensors and Evaporators
4. Know the different types of refrigerants and lubricants used in refrigeration system
5. Understand working of refrigeration flow control components
6. Appreciate the Application of refrigeration to various areas
7. Appreciate the concept of Air Conditioning and know their types
8. Familiarize the different tools used to install refrigeration system and Air Conditioner

1.0        Introduction to Refrigeration
1.1      Definition of Refrigeration
1.2      Refrigerating effect-unit of refrigeration- Coefficient of performance
1.3      Types of Refrigeration-Ice, dry ice, Steam jet, Throttling, Liquid nitrogen refrigeration
1.4      Carnot refrigeration Cycle
1.5      Air refrigeration- Bell - Coleman cycle, PV& TS diagram
             1.6      Advantage and disadvantages in air refrigeration
 1.7      Simple problems

2.0      Refrigeration systems
2.1       Basic Components, Flow diagram of working of Vapour compression cycle
2.2       Representation of the vapour compression cycle on P-H, T-S & P-V Diagram
2.3       Expression for Refrigerating effect, work done and power required
2.4       Types of Vapour Compression cycle
2.5       Effects of super heating and under cooling, its advantages and disadvantages
2.6       Simple Vapour absorptions cycle and its flow diagram                    
2.7       Simple Electrolux system for domestic units
2.8       Comparison of Vapour absorption and vapour compression system
2.9       Simple problems on vapour compression cycle

3.0       Refrigeration equipments
3.1       Compressor - types of compressors, -.Hermetically sealed  and Semi hermetically sealed compressor
3.2       Condensers - Air Cooled, water cooled, natural and forced draught cooling system,
3.3       Advantages and disadvantages of air cooled and water cooled condensers
3.4       Evaporators -natural, convection, forced convection types

4.0      Refrigerants and lubricants
4.1       Introduction to refrigerants
4.2       Properties of good refrigerants
4.3       Classification of refrigerants by group number and commonly used refrigerants in practice
4.4       Detection of refrigerants leakage
4.5       Charging the system with refrigerant
4.6       Lubricants used in refrigeration and their properties.

5.0       Refrigerant flow controls
5.1       Capillary tube
5.2       Automatic Expansion valve
5.3       Thermo static expansion valve
5.4       High side and low side float valve
5.5       Solenoid valve
5.6       Evaporator pressure regulator

6.0       Application of refrigeration

6.1       Slow  and quick freezing
6.2       Cold storage and Frozen storage
6.3       Dairy refrigeration
6.4       Ice making industry
6.5       Water coolers


7.0    Air conditioning
7.1       Introduction to Air conditioning
7.2       Factors affecting Air conditioning
7.3       Psychometric chart and its use
7.4       Psychometric process-sensible heating and cooling
            Humidifying and dehumidifying
7.5       Adiabatic saturation process
7.5       Equipments used in air conditioning cycle
7.6       Air conditioning units and plants

8.0       Refrigeration and Air-conditioning tools

            8.1       Tools used in refrigeration and Air conditioner installation
8.2       Installation procedure
8.3       Faults in refrigeration and air conditioning system
8.4       Servicing procedure

SPECIFIC INSTRUCTIONAL OBJECTIVES

1.0      Introduction to Refrigeration
1.1      Definition of Refrigeration
1.2      Define: Refrigerating effect-unit of refrigeration- Coefficient of performance
1.3      Explain different types of Refrigeration-such as ice, dry ice, and Steam jet, Throttling, Liquid nitrogen refrigeration
1.4      Explain with block diagram Carnot refrigeration Cycle
1.5      Sketch and explain Bell - Coleman cycle with PV& TS diagram
             1.6      State the advantage and disadvantages of air refrigeration system
 1.7      Simple problems on Carnot and air refrigeration cycle

2.0      Refrigeration systems
2.1       Explain with flow diagram of working of Vapour compression cycle
2.2       Representation of the vapour compression cycle on P-H, T-S & P-V Diagram
2.3      Derive an expression for Refrigerating effect, work done and power required
2.4       Sketch the different types of Vapour Compression cycle
2.5       Explain the effects of super heating and under cooling, its advantages and disadvantages
2.6       Sketch and explain Simple Vapour absorptions cycle and its flow diagram             
2.7       Sketch Simple Electrolux system for domestic units
2.8       Compare the Vapour absorption and vapour compression system
2.9       Simple problems on vapour compression cycle

3.0       Refrigeration equipments
3.1       Explain the types of compressors,
3.2       Explain -.Hermetically sealed - and Semi hermetically sealed compressor
3.3       Explain Air Cooled, water cooled condensers
3.4       Explain Natural and forced draught cooling system,
3.3       State the Advantages and disadvantages of air cooled and water cooled condensers
3.4       Explain Natural convection, forced convection types Evaporators

4.0    Refrigerants and lubricants

4.1       Define refrigerants and Lubricants
4.2       State the properties of good refrigerants
4.3       Give the classification of refrigerants by group number
4.4       List the commonly used refrigerants in practice
4.4       Discuss the detection of refrigerants leakage
4.5       Explain how to charge the system with refrigerant
4.6       State the lubricants used in refrigeration and their properties.

5.0       Refrigerant flow controls
5.1       Explain the working of capillary tube
5.2       Sketch and explain Automatic Expansion valve
5.3       Sketch and explain thermo static expansion valve
5.4       Explain with sketch the working of High side and low side float valve
5.5       Describe briefly the working of Solenoid valve
5.6       Explain evaporator pressure regulator

6.0       Application of refrigeration
6.1       Explain the various applications of refrigeration to the modern world with suitable diagram such as
i) Slow & quick freezing
            ii) Cold storage and Frozen storage
            iii) Dairy refrigeration
            iv) Ice making industry
            v)  Water coolers

7.0    Air conditioning
7.1       Give a brief introduction to Air conditioning
7.2       Mention the factors affecting Air conditioning
7.3       Discuss Psychometric chart & its use
7.4       Explain Psychometric process and plot on psychometric chart
i) Sensible heating and cooling ii) Humidifying and dehumidifying
7.5       Adiabatic saturation process
7.6       List and explain equipments used in air conditioning cycle
7.7       Explain Window air conditioner and packaged air conditioner units

8.0       Refrigeration and Air-conditioning tools
            8.1       List the Tools used in refrigeration and Air conditioner installation
8.2       Explain Installation procedure of refrigeration systems
8.3       List the Faults in refrigeration and air conditioning system
8.4       Explain Servicing procedure


REFERENCE BOOKS

1.         Refrigeration and Air Conditioning – by Domakundawar

2.         Refrigeration and Air Conditioning – by Sarao & Gabi

3.         Refrigeration and Air Conditioning – by Dosatt

4.         Refrigeration and Air Conditioning – by M.Zakria Baig

5.         Refrigeration and Air Conditioning – by C.P Arora

6.         Refrigeration and Air Conditioning – by  S.S Thipse  Jaico publications
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