VEM-113 Refrigeration I

Course Description:
This course introduces the students to the refrigeration principles and practices as applied to domestic, commercial, and industrial refrigeration systems. It also includes refrigeration processes, vapor compression refrigeration cycle, mechanical components, functions, refrigerants and their properties. Discussion of repair and servicing is concentrated mainly for domestic refrigeration and air conditioning application.

  • This course also meets PLO #(s) 10 of AAS degree in Building Technology major- Construction Electricity program.
  • Prerequisite Courses: VEM 105 or congruently

A.  PROGRAM LEARNING OUTCOMES (PLOs): 
 The student will be able to:

  1. Identify safety and occupational health requirements in the Refrigeration and Air Conditioning   industry.
  2. Manipulate specified hand and power tools for Refrigeration and Air Conditioning.
  3. Perform basic hand skills in maintaining Refrigeration and Air Conditioning system to a given specifications.
  4. Read and interpret basic electrical drawing and symbols related to Refrigeration and Air Conditioning.
  5. Perform basic troubleshooting and repair of domestic refrigeration and air conditioning units.
  6. Participate in the Refrigeration and Air Conditioning profession.

B.  STUDENT LEARNING OUTCOMES (SLOs)- GENERAL:  
The student will be able to:

  1. Discuss the fundamentals of refrigeration.
  2. Perform basic shop practices.
  3. Determine the different compression refrigeration systems.
  4. Recognize the common refrigerants.
  5. Troubleshoot and repair mechanical defects of domestic refrigeration system.

SLO

PLO 1

PLO 2

PLO 3

PLO 4

PLO 5

PLO 6

1

I

 

 I

 

I, D

D

2

M

D

D

 

 

D

3

D

 

I,D

I

I

D

4

M

I

I, D

 

D

D

5

M

I,D

I, D

D

D, M

M

I = Introduced
D = Demonstrated
M = Mastered

C.  STUDENT LEARNING OUTCOMES (SLOs)-SPECIFIC: 
      The student will be able to: 

General SLO 1. Discuss the fundamentals of refrigeration.


Student Learning Outcome

Assessment Strategies

1.1 Define refrigeration and air conditioning.

Short answer questions
Multiple choice questions
Practical task

1.2 Discuss the development of refrigeration
1.3 Define pressure
1.4 Differentiate heat and temperature
1.5 Compare sensible and latent heat

General SLO 2. Perform basic shop practices.


Student Learning Outcome

Assessment Strategies

2.1. Discuss measurement

Short answer questions
Multiple choice questions
Practical task

2.2. Demonstrate cutting of ACR tubes

2.3. Perform swaging, flaring and bending

2.4. Demonstrate brazing

2.5. Observe personal and equipment safety in using refrigeration tools and equipment.

General SLO 3. Determine the basic refrigeration systems.


 Student Learning Outcome

Assessment Strategies

3.1 Discuss the operation of a simple ice refrigerator.

Short answer questions
Multiple choice questions
Practical task

3.2 Name the basic mechanical refrigeration systems.
3.3 Describe the operation of various mechanical refrigeration systems.
3.4 State the five thermal laws relating to refrigeration.
3.5 Discuss the compression cycle for domestic refrigerator.
3.6 List the components of a compression system.

General SLO 4. Recognize the common refrigerants.


Student Learning Outcome

Assessment Strategies

4.1 Define refrigerant

Short answer questions
Multiple choice questions
Practical task

4.2 List some requirements of good refrigerant
4.3 Classify refrigerants
4.5 Describe the methods of identifying refrigerants
4.6 Determine the cylinder color code for refrigerants
4.6 Observe safety in handling refrigerants

General SLO 5. Troubleshoot and repair small hermetic units.


Student Learning Outcome

Assessment Strategies

5.1 Select proper tools and instruments needed for servicing domestic and small commercial systems.

Short answer questions
Multiple choice questions
Practical task

5.2 List supplies needed on a typical installation and service call.
5.3 Identify the mechanical defects of domestic system.
5.4 Locating refrigerant leaks.
5.5 Demonstrate refrigerant recovery and recycling.
5.6 Dismantle and replace mechanical components.
5.7 Perform system evacuation.
5.8 Recharge exact amount of refrigerant into the system.
5.9 Follow personal and equipment safety in troubleshooting and repair of small hermetic units.

D.  COURSE CONTENT
I. Development and fundamentals of refrigeration
II. Shop practices
III. Basic refrigeration systems
IV. Operation of compression systems and compressors
V. Properties of refrigerants
VI. Servicing and repair of domestic and small commercial system

E.  METHODS OF INSTRUCTION

  1. Computer Aided Instruction
  2. Practical/Experimentation
  3. Lecture/Demonstration

F.  REQURIED TEXT(S) AND COURSE MATERIALS
Althouse, A., Turnquist, C., & Bracciano, A. (2004). Modern Refrigeration and Air Conditioning. 18th Edition. Tinley Park, IL: The Goodheart-Wilcox Co., Inc. (or most recent edition).

G.  REFERENCE MATERIALS
  1. National Center for Construction Education and Research, Heating Ventilating and Air Conditioning: Prentice Hall, Upper Saddle River, New Jersey Columbus, Ohio, USA. (or most recent edition).
  2. Robert P. Scaringe, Environmentally Safe Refrigerant Service Techniques for the Next Generation. Mainstream Engineering Corporation, Rockledge, Florida, USA. (or most recent edition).
  3. Air Conditioning Hand Out

H.  INSTRUCTIONAL COSTS
None

I.   EVALUATION
The student must achieve 70% mastery or a “C”  to pass this course.

L.  CREDIT BY EXAMINATION
None

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