Discipline: Air Conditioning & Refrigeration Degree Credit  [X]
Non Credit  [ ]
Nondegree Credit  [ ]
Comm Service  [ ]
 

Riverside Community College District
Integrated Course Outline of Record

Air Conditioning & Refrigeration 51B


COURSE DESCRIPTION
51B Comrcial Refrigeratn Units: 5.00
 
Prerequisite(s): AIR 50B: Advanced Refrigeration
Consists of design and application of commercial and industrial refrigeration systems. Covers pneumatic control systems, hydraulic systems, and electronic systems that are currently in use in industry today. Also includes special applications covering expendable refrigerant, absorption, thermal electric, cascade, and low temperature exotic systems. Designs and applications of all these systems include preventive maintenance and repair. 72 hours lecture and 54 hours laboratory.
 
SHORT DESCRIPTION FOR CLASS SCHEDULE
Design, application and maintenance of commercial and industrial refrigeration systems.
 
ADVISORY ENTRY SKILLS
Before entering the course, students will be able to:
  1. Identify the components of motors and motor controls and describe their functions.

  2. Select and apply appropriate diagnostic methods, safety procedures, and preventative maintenance plans and environmental control systems.

  3. Design environmental systems and perform related load calculations to meet system design requirements.
STUDENT LEARNING OUTCOMES
 Upon successful completion of the course, students should be able to:

Describe the design principles and applications of commercial and
industrial refrigeration systems.

Troubleshoot and perform preventative maintenance on industrial
refrigeration systems.

Demonstrate methods used to select and test commercial and
industrial cooling coils and systems.
 
COURSE CONTENT
  TOPICS
 
  1. Thermostatic expansion valves and water valves
    1. Removing
    2. Testing
    3. Installing
    4. Adjusting
  2. Two-temperature Valve
    1. Inspecting
    2. Assembling
    3. Testing
  3. Commercial-type motor control
    1. Removing
    2. Inspecting
    3. Installing
    4. Adjusting
  4. Capacitor-start/capacitor-run fan motor, testing and operation
  5. Evaporator fan motor 
    1. Dismantling and assembling
    2. Operating and testing
  6. Commercial Systems
    1. Tracing the electrical circuits
    2. Drawing the wiring diagram for commercial systems
  7. Servicing a water cooling system
    1. Display case system
    2. Reach-in cabinet system
    3. Frozen food system,
    4. Multiple-system and evaporative condenser or a cooling tower system
    5. Remote air-cooled condenser system and a hot gas defrost system 
  8. Troubleshooting a commercial system
    1. Ice maker system, 
    2. Multiple temperature system 
    3. Peumatic control system, hydraulic system, electronic system 
    4. Expendable refrigerant system 
    5. Absorption system 
    6. Thermal-electric system 
    7. Cascade system 
    8. Low-temperature exotic system
 
METHODS OF INSTRUCTION
 Methods of instruction used to achieve student learning outcomes may include, but are not limited to:

  • Presenting class lectures, discussions and demonstrations by instructor or guest speakers in order to introduce students to principles, concepts, tools and equipment
  • Utilizing multi-media presentations to demonstrate and simulate complex concepts
  • Assigning homework that reinforces concepts presented in class lecture and gives students an opportunity to conduct research on a variety of air conditioning systems
  • Assigning small group and individual class exercises that enable students to work cooperatively as a team to solve system problems under the supervision and guidance of the instructor
  • Assigning special projects outside of class that expose students’ to environments, tools and methods not available in class.  The projects may include field trips or research projects.
  • Assigning reading outside of textbook material; these may include building system descriptions, industry publications or equipment manuals
 
METHODS OF EVALUATION
 Students will be evaluated for progress in and/or mastery of learning outcomes by methods of evaluation which may include, but are not limited to:

  • Frequent quizzes and tests that enable instructor to assess students’ comprehension of key concepts and principles of refrigeration
  • Hands-on problem-solving exercises that demonstrate students’ ability to troubleshoot system problems, formulate repair strategies and apply content.
  • Final exam that assesses students’ overall comprehension of content material.
  • Final applied project that demonstrates students’ proficiency in troubleshooting, repair and system design
ASSIGNMENTS

Required Reading Assignments


Required Writing Assignments


Other Outside-of-Class Assignments
 
COURSE MATERIALS
 All materials used in this course will be periodically reviewed to ensure that they are appropriate for college level instruction. Possible texts include:

  • Johnson, William M., Tomczyk, John and Whitman, William C. . Refrigeration & Air Conditioning Technology. 4 ed. any: Delmar, 2000.
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