Academic Catalog

APPT 158: RF 402 ADVANCED REFRIGERATION & CHILLERS

Foothill College Course Outline of Record

Foothill College Course Outline of Record
Heading Value
Units: 4.5
Hours: 30 lecture, 78 laboratory per quarter (108 total per quarter)
Prerequisite: Per California Code of Regulations, this course is limited to students admitted to the Air Conditioning & Refrigeration Technology Apprenticeship Program.
Advisory: Not open to students with credit in APPR 108.
Degree & Credit Status: Degree-Applicable Credit Course
Foothill GE: Non-GE
Transferable: None
Grade Type: Letter Grade (Request for Pass/No Pass)
Repeatability: Not Repeatable

Student Learning Outcomes

  • A student will be able to describe the theory of centrifugal compression.
  • A student will be able to list centrifugal compressor tear-down procedures.
  • A student will be able to describe water chiller control systems.

Description

Study of the operation and design of positive displacement water chillers and commercial boilers and boiler room equipment. Single-stage and multi-stage centrifugal water chillers will also be covered. Methods of evaluating chiller performance; develop troubleshooting skills.

Course Objectives

The student will be able to:
A. Describe the operation and design of positive displacement water chillers.
B. Evaluate total system efficiency.
C. Describe the operation and design of commercial boilers and boiler room equipment.
D. Describe operation of single-stage and multi-stage centrifugal water chillers.
E. Evaluate chiller performance.

Course Content

A. Describe the operation and design of positive displacement water chillers
1. Types and styles of chiller compressors--reciprocating, scroll and screw
2. Water cooled condensers
3. Evaporators
4. Hydronics
5. Lubrication systems
B. Evaluate total system efficiency
1. Compare design data to actual operating data
2. Compare design KW per ton to actual KW per ton
3. Trouble shoot to determine causes of efficiency loss
4. Determine corrective actions
C. Describe the operation and design of commercial boilers and boiler room equipment
1. Theory of combustion and thermodynamics
2. Types and styles of commercial boilers
3. Burners and flame failure systems
4. Gas train and operating components
5. Safety equipment and safety procedures
6. Steam traps, blow down valves and safety valves
7. Chemical feed systems
8. Proper care and maintenance of total steam system
D. Describe operation of single-stage and multi-stage centrifugal water chillers
1. Centrifugal refrigerant cycle
2. Capacity control using pre whirl guide vanes
3. Lubrication and low load oil recovery systems, bearings and seals
4. Condensers, coolers and re-tube procedures
5. Prime movers--open motor, hermetic motors and engine driven
6. Starters--STAR DELTA, primary, reactor and auto transformer
E. Evaluate chiller performance
1. Compare design KW per ton to actual KW per ton
2. Troubleshoot to determine causes of low chiller efficiency
3. Determine corrective actions

Lab Content

Students will work individually and in teams on chiller performance evaluation projects.

Special Facilities and/or Equipment

Laboratory equipped with refrigeration equipment and tools.

Method(s) of Evaluation

A. Results of written quizzes and tests
B. Satisfactory completion of shop projects
C. Comprehensive written final examination
D. Maintenance of a workbook of student's daily work activities

Method(s) of Instruction

A. Lecture
B. Lab Assignment
C. Group Discussion
D. Demonstration

Representative Text(s) and Other Materials

Carrier Corporation. Carrier Troubleshooting Reciprocating Liquid Chillers. Syracuse, NY: Carrier Corporation, 1994.

Cleaver Brooks. Boiler Room Guide. Thomasville, GA: Cleaver Brooks, 2016.

Auvil, Ronnie J. HVAC and Mechanical Systems Training Manual. Orland Park, IL: American Technical Publishers, 2014.

Trane. Air Conditioning Clinic Centrifugal Water Chillers. Davidson, NC: Trane, 2012.

Trane. Air Conditioning Clinic Absorption Water Chillers. Davidson, NC: Trane, 2012.

Trane. Air Conditioning Clinic Chilled Water Systems. Davidson, NC: Trane, 2012.

Trane. Air Conditioning Clinic Helical Rotary Water Chillers. Davidson, NC: Trane, 2012.

Trane. Air Conditioning Clinic Ice Storage Systems. Davidson, NC: Trane, 2012.

Steingress, Frederick M., and Daryl R. Walker. Low Pressure Boilers. 4th ed. Orland Park, IL: American Technical Publishers, 2013.

Steingress, Frederick M., and Daryl R. Walker. Low Pressure Boilers Study Guide. 4th ed. Orland Park, IL: American Technical Publishers, 2013.

Steingress, Frederick M., Harold J. Frost, and Daryl R. Walker. High Pressure Boilers. 5th ed. Orland Park, IL: American Technical Publishers, 2012.

Steingress, Frederick M., Harold J. Frost, and Daryl R. Walker. High Pressure Boilers Study Guide. 5th ed. Orland Park, IL: American Technical Publishers, 2012.

National Fire Protection Association. NFPA 70E Standard for Electrical Safety in the Workplace. 2015 ed. Quincy, MA: National Fire Protection Association, 2014.

eHazard Management, LLC. Low Voltage Qualified Electrical Workplace Safety. Louisville, KY: eHazard Management, LLC, 2015.



Note: Although one or more of these texts are older than the recommended 5 years they conform to national training standards and are considered seminal works in the discipline. We will adopt the next edition of each text, as it is published.

 

Types and/or Examples of Required Reading, Writing, and Outside of Class Assignments

A. Readings from textbook Carrier Troubleshooting Reciprocating Liquid Chillers: Workbook 1

1. Session, Safety and Typical Chiller Operation, answer study guide questions

B. Writing assignments given in the laboratory

1. Record sample maintenance log data given in Troubleshooting text: Exercise 1

2. Analyze design and operating data to identify chiller performance problems and write a service report listing recommended corrective actions

 

Discipline(s)

Air Conditioning, Refrigeration, Heating