modal air cond
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MALAYSIA POLYTECHNICS
MINISTRY OF EDUCATION
MODULE J2160
AIR CONDITIONING & REFRIGERATION TECHNOLOGY I
S. OF THANDAYUTHAPANI (PKS) BIODATA MODULE WRITERS HARYANTY BT HASSAN (PKS) J2160 : AIR-CONDITIONING AND REFRIGERATION
Name Address S.Thandayuthapani Mechanical Engineering Department Politeknik Kuching Sarawak Km 22, Jalan Matang, 93050 Kuching, Sarawak Telephone No. : 082-428796 ext.232 e-mail : [email protected] Qualifications : BSc Mech Eng (UTM) Dip.Ed. Cert. Plant Eng. Position : Polytechnic Lecturer : :
Name Address
: :
Telephone No. : e-mail : Qualifications : Position : Proof-reader Name Address
Haryanty Bt Hassan Mechanical Engineering Department Politeknik Kuching Sarawak Km 22, Jalan Matang, 93050 Kuching, Sarawak 082-428796 ext.232 [email protected] Diploma In Mech. Eng. (UTM) Polytechnic Lecturer
Bong Rose Lin Language Unit General Studies Department Department Ungku Omar Polytechnic Jalan Rja Musa Mahadi 31400 Ipoh, Perak Telephone No.: 05-5457622 ext 2225 E-mail : [email protected] Qualifications : B.Ed T.E.S.L Position : Polytechnic Lecturer
: :
What Do You Think Of This Module?
Title of Module: _______________________ Student’s Name: _______________________ Module Code : ___________
Registration No. : ___________
Course: ____________________________________ Module Writers: ______________________________ Please use the following scale for your evaluation:
4 3 2 1 Strongly Agree Agree Disagree Strongly Disagree
Instruction : Please √ on the space provided. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 How much do you agree with the following statements? A. FORMAT The pages are organized in an interesting manner. The font size makes it easy for me to read the module. The size and types of pictures and charts used are suitable for the input. The pictures and charts are easy to read and understand. The tables used are well-organised and easy to understand. The arrangement of the Input makes it easy for me to follow. All the instructions are displayed clearly. B. CONTENTS I understand all the objectives clearly. I understand the ideas conveyed. The ideas are presented in an interesting manner. All the instructions are easy to understand. I can carry out the instructions in this module. I can answer the questions in the activities easily. I can answer the questions in the self-assessment. The feedback section can help me identify my mistakes. The language used is easy to understand. The way the module is written makes it interesting to read. I can follow this module easily. Each unit helps me understand the topic better. 1 SCALE 2 3 4
1
2
3
4
20
I have become more interested in the subject after using this module.
CURRICULUM GRID
The curriculum grid of this module is based on the curriculum used by Malaysian polytechnics. No. 1 2 3 4 5 6 7 TOPIC AIR CONDITIONING AND REFRIGERATION PHYSICAL PRINCIPLES HEAT FLOW PROCESSES BASIC METHODS OF HEAT TRANSFER BASIC REFRIGERATION CYCLE REFRIGERANTS AIR CONDITIONING AND REFRIGERATION COMPONENTS ACCESSORIES 1 3 4 5 6 7 8 9 2 UNIT Total Hours
8
UNIT 1
AIR CONDITIONING AND REFRIGERATION (PART I) 1.0 Introduction to Air Conditioning 1.1 Residential Equipment 1.2 Commercial equipment 1.3 Mobile Equipment
UNIT 2
AIR CONDITIONING AND REFRIGERATION (PART II) 2.0 Window Unit 2.1 Split Unit 2.2 Package Unit 2.3 Central Unit PHYSICAL PRINCIPLES 3.0 The Metric System 3.1 Energy 3.2 Power 3.3 Pressure 3.4 Temperature
UNIT 3
3.5 UNIT 4
Enthalpy
HEAT FLOW PROCESSES 4.0 Introduction to System 4.1 4.2 Definition of the Ideal (Perfect) Gas Laws Heat
UNIT 5
BASIC METHODS OF HEAT TRANSFER 5.0 Heat Transfer Methods 5.1 Introduction to Heat Metric Unit 5.2 Introduction to Enthalpy 5.3 Introduction to Latent Heat and Sensible Heat 5.4 Introduction to Saturation Condition Phases
UNIT 6
BASIC REFRIGERATION CYCLE 6.0 Principles of Refrigeration 6.1 The Refrigeration Circuit 6.2 Mechanical Refrigeration System (Vapor Compression) 6.3 Absorption Refrigeration System
UNIT 7
REFRIGERANTS 7.0 Functions and Types of Refrigerants 7.1 Classification of Refrigerants 7.2 Properties of Refrigerants AIR CONDITIONING AND REFRIGERATION COMPONENTS 8.0 Compressors 8.1 Condensers 8.2 Control Devices 8.3 Evaporators ACCESSORIES 9.0 Receivers Dryers 9.1 Heat Exchangers 9.2 Sight Glass 9.3 Accumulators
UNIT 8
UNIT 9
9.4 9.5
Oil Separators Vibration Absorbers
MODULE GUIDELINES To achieve maximum benefits in using this module, students must follow the instructions carefully and complete all the activities. 1. 2. This module is divided into 9 units. Each page is numbered according to the subject code, unit and page number. J2160 / UNIT 1 / 5
Subject Unit 1 3. 4.
Page Number 5
The general and specific objectives are given at the beginning of each unit. The activities in each unit are arranged in a sequential order and the following symbols are given:
OBJECTIVES The general and specific objectives for each learning topic are stated in this section.
INPUT This section introduces the subject matter that you are going to learn.
ACTIVITIES The activities in this section test your understanding of the subject matter. You have to complete this section by following the instructions carefully.
FEEDBACK Answers to the questions in the activity section are given here
SELF-ASSESSMENT Self-assessment evaluates your understanding of each unit.
FEEDBACK OF SELF-ASSESSMENT This section contains answers to the activities in the self- assessment..
5. 6.
You have to follow the units in sequence. You may proceed to the next unit after successfully completing the unit and you are confident of your achievement.
GENERAL AIMS This module is prepared for students in the second semester who are pursuing the Certificate/Diploma programmes in Malaysian Polytechnics. It aims to expose students to the Air Conditioning and Refrigeration concept in each unit and to lead them towards self-directed learning or with minimal guidance from their lecturers. PRE - REQUISITE SKILLS AND KNOWLEDGE The pre-requisite for this module is at least a pass in Mathematics at the SPM level and a successful completion of the Engineering Science module in the first semester.
GENERAL OBJECTIVES
At the end of this module, students should be able to: 1. Understand the basic principles of refrigeration and air conditioning system. 2. Identify the classification of air conditioning and refrigeration systems. 3. Describe the differences of residential, commercial and automobile air conditioning systems. 4. Define the basic law of thermodynamics and understand the principal work of the system, the process of heat transfer and its differences. 5. Describe the characteristics of heat as removal heat, recovery heat, sensible heat and latent heat. 6. Define the basic principles of physics as energy, pressure and temperature and their combination in law characteristic functions. 7. Understand the fundamentals of the refrigeration cycle, refrigeration circuit and the system with or without the presence of compressor or nonmechanical system. 8. Identify various designs, of big and small residential and domestic air conditioning and refrigeration systems and their purposes. 9. Understand each construction and its schematic position and the flow or function which takes place. 10. Describe the refrigerants which are used in the refrigeration and air conditioning system. 11. Identify the properties, characteristics and chemical reactions in common refrigerants. 12. Identify the principal components in the air conditioning circuit, each classification, purpose, main function, construction and its work principles.
13. Understand the importance of accessories part in air conditioning and refrigeration units as well as their design, function, location and purposes.
TEACHING AIDS AND RESOURCES NEEDED 1. 2. Calculator Psychometric Chart
REFERENCES 1. Edward G. Pita (1998), Air Conditioning Principles and System – 3rd Ed. Prentice Hall Inc V. Paul Lang, Principles of Air Conditioning – 4th Ed (1987) Delmar Publishers Inc Edwin P. Anderson (1998), Air Conditioning Home and Commercial, Macmilan Publishing Company W. P. Jones (1998), Air Conditioning Engineering – 3rd Ed. Edward Arnold, 1998 James E. Brumbaygh, Heating,(1988) Ventilating and Air Conditioning Library; Heating Fundamentals, Macmillan Publisher Boyle H. Dwiggins (1988), Automotive Air Conditioning, Delmar Publisher Inc.
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MINISTRY OF EDUCATION
MODULE J2160
AIR CONDITIONING & REFRIGERATION TECHNOLOGY I
S. OF THANDAYUTHAPANI (PKS) BIODATA MODULE WRITERS HARYANTY BT HASSAN (PKS) J2160 : AIR-CONDITIONING AND REFRIGERATION
Name Address S.Thandayuthapani Mechanical Engineering Department Politeknik Kuching Sarawak Km 22, Jalan Matang, 93050 Kuching, Sarawak Telephone No. : 082-428796 ext.232 e-mail : [email protected] Qualifications : BSc Mech Eng (UTM) Dip.Ed. Cert. Plant Eng. Position : Polytechnic Lecturer : :
Name Address
: :
Telephone No. : e-mail : Qualifications : Position : Proof-reader Name Address
Haryanty Bt Hassan Mechanical Engineering Department Politeknik Kuching Sarawak Km 22, Jalan Matang, 93050 Kuching, Sarawak 082-428796 ext.232 [email protected] Diploma In Mech. Eng. (UTM) Polytechnic Lecturer
Bong Rose Lin Language Unit General Studies Department Department Ungku Omar Polytechnic Jalan Rja Musa Mahadi 31400 Ipoh, Perak Telephone No.: 05-5457622 ext 2225 E-mail : [email protected] Qualifications : B.Ed T.E.S.L Position : Polytechnic Lecturer
: :
What Do You Think Of This Module?
Title of Module: _______________________ Student’s Name: _______________________ Module Code : ___________
Registration No. : ___________
Course: ____________________________________ Module Writers: ______________________________ Please use the following scale for your evaluation:
4 3 2 1 Strongly Agree Agree Disagree Strongly Disagree
Instruction : Please √ on the space provided. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 How much do you agree with the following statements? A. FORMAT The pages are organized in an interesting manner. The font size makes it easy for me to read the module. The size and types of pictures and charts used are suitable for the input. The pictures and charts are easy to read and understand. The tables used are well-organised and easy to understand. The arrangement of the Input makes it easy for me to follow. All the instructions are displayed clearly. B. CONTENTS I understand all the objectives clearly. I understand the ideas conveyed. The ideas are presented in an interesting manner. All the instructions are easy to understand. I can carry out the instructions in this module. I can answer the questions in the activities easily. I can answer the questions in the self-assessment. The feedback section can help me identify my mistakes. The language used is easy to understand. The way the module is written makes it interesting to read. I can follow this module easily. Each unit helps me understand the topic better. 1 SCALE 2 3 4
1
2
3
4
20
I have become more interested in the subject after using this module.
CURRICULUM GRID
The curriculum grid of this module is based on the curriculum used by Malaysian polytechnics. No. 1 2 3 4 5 6 7 TOPIC AIR CONDITIONING AND REFRIGERATION PHYSICAL PRINCIPLES HEAT FLOW PROCESSES BASIC METHODS OF HEAT TRANSFER BASIC REFRIGERATION CYCLE REFRIGERANTS AIR CONDITIONING AND REFRIGERATION COMPONENTS ACCESSORIES 1 3 4 5 6 7 8 9 2 UNIT Total Hours
8
UNIT 1
AIR CONDITIONING AND REFRIGERATION (PART I) 1.0 Introduction to Air Conditioning 1.1 Residential Equipment 1.2 Commercial equipment 1.3 Mobile Equipment
UNIT 2
AIR CONDITIONING AND REFRIGERATION (PART II) 2.0 Window Unit 2.1 Split Unit 2.2 Package Unit 2.3 Central Unit PHYSICAL PRINCIPLES 3.0 The Metric System 3.1 Energy 3.2 Power 3.3 Pressure 3.4 Temperature
UNIT 3
3.5 UNIT 4
Enthalpy
HEAT FLOW PROCESSES 4.0 Introduction to System 4.1 4.2 Definition of the Ideal (Perfect) Gas Laws Heat
UNIT 5
BASIC METHODS OF HEAT TRANSFER 5.0 Heat Transfer Methods 5.1 Introduction to Heat Metric Unit 5.2 Introduction to Enthalpy 5.3 Introduction to Latent Heat and Sensible Heat 5.4 Introduction to Saturation Condition Phases
UNIT 6
BASIC REFRIGERATION CYCLE 6.0 Principles of Refrigeration 6.1 The Refrigeration Circuit 6.2 Mechanical Refrigeration System (Vapor Compression) 6.3 Absorption Refrigeration System
UNIT 7
REFRIGERANTS 7.0 Functions and Types of Refrigerants 7.1 Classification of Refrigerants 7.2 Properties of Refrigerants AIR CONDITIONING AND REFRIGERATION COMPONENTS 8.0 Compressors 8.1 Condensers 8.2 Control Devices 8.3 Evaporators ACCESSORIES 9.0 Receivers Dryers 9.1 Heat Exchangers 9.2 Sight Glass 9.3 Accumulators
UNIT 8
UNIT 9
9.4 9.5
Oil Separators Vibration Absorbers
MODULE GUIDELINES To achieve maximum benefits in using this module, students must follow the instructions carefully and complete all the activities. 1. 2. This module is divided into 9 units. Each page is numbered according to the subject code, unit and page number. J2160 / UNIT 1 / 5
Subject Unit 1 3. 4.
Page Number 5
The general and specific objectives are given at the beginning of each unit. The activities in each unit are arranged in a sequential order and the following symbols are given:
OBJECTIVES The general and specific objectives for each learning topic are stated in this section.
INPUT This section introduces the subject matter that you are going to learn.
ACTIVITIES The activities in this section test your understanding of the subject matter. You have to complete this section by following the instructions carefully.
FEEDBACK Answers to the questions in the activity section are given here
SELF-ASSESSMENT Self-assessment evaluates your understanding of each unit.
FEEDBACK OF SELF-ASSESSMENT This section contains answers to the activities in the self- assessment..
5. 6.
You have to follow the units in sequence. You may proceed to the next unit after successfully completing the unit and you are confident of your achievement.
GENERAL AIMS This module is prepared for students in the second semester who are pursuing the Certificate/Diploma programmes in Malaysian Polytechnics. It aims to expose students to the Air Conditioning and Refrigeration concept in each unit and to lead them towards self-directed learning or with minimal guidance from their lecturers. PRE - REQUISITE SKILLS AND KNOWLEDGE The pre-requisite for this module is at least a pass in Mathematics at the SPM level and a successful completion of the Engineering Science module in the first semester.
GENERAL OBJECTIVES
At the end of this module, students should be able to: 1. Understand the basic principles of refrigeration and air conditioning system. 2. Identify the classification of air conditioning and refrigeration systems. 3. Describe the differences of residential, commercial and automobile air conditioning systems. 4. Define the basic law of thermodynamics and understand the principal work of the system, the process of heat transfer and its differences. 5. Describe the characteristics of heat as removal heat, recovery heat, sensible heat and latent heat. 6. Define the basic principles of physics as energy, pressure and temperature and their combination in law characteristic functions. 7. Understand the fundamentals of the refrigeration cycle, refrigeration circuit and the system with or without the presence of compressor or nonmechanical system. 8. Identify various designs, of big and small residential and domestic air conditioning and refrigeration systems and their purposes. 9. Understand each construction and its schematic position and the flow or function which takes place. 10. Describe the refrigerants which are used in the refrigeration and air conditioning system. 11. Identify the properties, characteristics and chemical reactions in common refrigerants. 12. Identify the principal components in the air conditioning circuit, each classification, purpose, main function, construction and its work principles.
13. Understand the importance of accessories part in air conditioning and refrigeration units as well as their design, function, location and purposes.
TEACHING AIDS AND RESOURCES NEEDED 1. 2. Calculator Psychometric Chart
REFERENCES 1. Edward G. Pita (1998), Air Conditioning Principles and System – 3rd Ed. Prentice Hall Inc V. Paul Lang, Principles of Air Conditioning – 4th Ed (1987) Delmar Publishers Inc Edwin P. Anderson (1998), Air Conditioning Home and Commercial, Macmilan Publishing Company W. P. Jones (1998), Air Conditioning Engineering – 3rd Ed. Edward Arnold, 1998 James E. Brumbaygh, Heating,(1988) Ventilating and Air Conditioning Library; Heating Fundamentals, Macmillan Publisher Boyle H. Dwiggins (1988), Automotive Air Conditioning, Delmar Publisher Inc.
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