Course Title:
Course Number:
Introduction to the Refrigeration Cycle:Part 1
AC/R-1
  This introductory course covers the basic physics of HVAC/R; the components of a basic refrigeration system; the basic refrigeration cycle pressure-temperature relationship; and work related math and formulas.
Course Outline: Download/print this course outline
DAY 1 SUBJECT: Basic System Components and Their Operation
GOAL: Orientation and Introduction Terminology
OBJECTIVES: Student will be able to:
Identify the four major components of a refrigeration and air conditioning system.
Discuss the major difference between the air conditioner and refrigeration system
Discuss air conditioning terminology
Use the pressure temperature chart
SUBJECT CONTENTS: Formulas useful to the HVAC Tech
Basic refrigeration principals
The basic refrigeration cycle
States of refrigeration
HVAC Definitions
Humidification
Ventilation
Cleanliness of air
Two types of heat
Refrigeration cycle major components
Mixtures
Definitions
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Alco
Sporlan
Refrigerant Services Inc.
Allied Signal Inc.
Term #1 Mechanical Binder
RESOURCES: Whitman Johnson
Refrigeration Services Inc
Allied Signal Inc.
Video Tapes
Handouts
Overheads
EVALUATION: Quiz Whitman Johnson
   
DAY 2 SUBJECT: Basic System Components and Their Operation
GOAL: The Gage Manifold
OBJECTIVES: Student will be able to:
Recognize the gage manifold set
Read the pressure temperature on the gage manifold
Understand the operation of the gages
Understand the proper procedure for installing and removing the gage manifold
Performance based factor
SUBJECT CONTENTS: P.B.F.
(Tim 01) Identify four major components on a window unit.
(Tim 02) Identify mechanical components in a water-cooled package unit.
Refrigeration gages
What do the little numbers stand for on the gages
Handles, what are the actions
Removing gages properly
Removing gage properly
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
RESOURCES: Whitman Johnson
System Room
Video Tapes
EVALUATION: Quiz Whitman Johnson
   
DAY 3 SUBJECT: Basic System Components and Their Operation
GOAL: The Gage Manifold
OBJECTIVES: Student will be able to:
Recognize the gage manifold set
Read the pressure temperature on the gage manifold
Understand the operation of the gages
Understand the proper procedure for installing and removing the gage manifold
Performance based factor
SUBJECT CONTENTS: P.B.F.
(Tim 01) Identify four major components on a window unit.
(Tim 02) Identify mechanical components in a water-cooled package unit.
Refrigeration gages
What do the little numbers stand for on the gages
Handles, what are the actions
Removing gages properly
Removing gage properly
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
RESOURCES: Whitman Johnson
System Room
Video Tapes
EVALUATION: Quiz Whitman Johnson
   
DAY 4 SUBJECT: Basic System Components and Their Operation
GOAL: Temperature, states and pressures throughout the refrigeration system
OBJECTIVES: Student will be able to:
Define/Discuss temperature, states and pressures and where they are found in refrigeration systems.
Discuss high pressure and where they found it in the system
Discuss low pressure and where they found it in the refrigeration system
Discuss high temperatures and where they found it in the system
Discuss low temperatures and where they found it in the system
Discuss and understand the states of the refrigerant throughout the system
Performance based factor Tim 03 and Tim 04
SUBJECT CONTENTS: T.S.P.
T.S.P. Breakdown
T.S.P. Where
Refrigerant lines I.D.
Suction lines
Discharge lines
Liquid line
METHODS/
TECHNIQUES:
Term #1 Mechanical Binder
Whitman Johnson Edition #4
Handouts
Overheads
EVALUATION: Quiz Whitman Johnson
   
DAY 5 SUBJECT: Basic System Components and Their Operation
GOAL: Introduction to compressors
OBJECTIVES: Student will be able to:
Define a compressor
Identify the following type of compressors: reciprocating, scroll and rotary.
Discuss the difference between semi-hermetic open type.
SUBJECT CONTENTS: Illustration of reciprocating
Internal view of reciprocating
Illustration of rotary compressor
Illustration of scroll compressor
Illustration of semi hermetic compressor
Types of compressors:
Hermetic
Reciprocating
Scroll
Rotary
Semi-Hermetic
Open Type
Crankcase Heaters
Superheat
Compressor Cooling Air or Refrigerant
METHODS/
TECHNIQUES:
Term #1 Mechanical Binder: Section 4
Whitman Johnson Edition #4
Ambient chart R-22
Compressor Failure Form
Copeland Tech
Carrier Service Tech
P.B.F. (Tim 05 & Tim 06
EVALUATION: Quiz Whitman Johnson
   
DAY 6 SUBJECT: Basic System Components and Their Operation
GOAL: Introduction to Evaporation and Condensers
OBJECTIVES: Student will be able to:
Define an evaporator
Define a condenser
Discuss the difference between DX evaporators and chilled water coil
Discuss and measure the temperature difference (TD) across the DX evaporator and chilled water coil
SUBJECT CONTENTS: Evaporators
Direct expansion coil capacity
U factor
Mean temperature difference
Boiling point of refrigerants
Defrosting evaporation coils
Oil Circulation
Evaporation pressure controls and distributors
Evaporator pressure drop
Condensers
RESOURCES: Term #1 Mechanical Binder: Section 5
Overheads
Handouts
Whitman Johnson Edition #4
EVALUATION: Quiz Whitman Johnson
   
DAY 7 SUBJECT: Basic System Components and Their Operation
GOAL: Expansion devices and their operation
OBJECTIVES: Student will be able to:
Recognize the capillary tube and know how it affects the system
Recognize the actuator and how it affects the system
Recognize the TXV and its operating parts
Note and discuss the operation of the TXV
SUBJECT CONTENTS: Refrigerant control devices
Types of control devices
Automatic expansion valves
Refrigeration
Float controls
Capillary tubes
Actuator (Fixed or unfixed)
Thermostatic expansion valve
Cooling changing
Heat charging
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Alco
Sporlan
Refrigeration Service Inc.
Handouts
Videotapes
Overheads
EVALUATION: Quiz Whitman Johnson
   
DAY 8 SUBJECT: Basic System Components and Their Operation
GOAL: Midterm Exam
SUBJECT CONTENTS: Recap all work to date
50-question midterm quiz
   
DAY 8 SUBJECT: Basic System Components and Their Operation
GOAL: Auxiliary components and refrigerant color char for refrigerant cylinders and TXV’s
OBJECTIVES: Student will be able to:
Define high side auxiliary components
Discuss low side auxiliary components
Note and discuss their function
Identify types of refrigerants and TXV’s by their color code
SUBJECT CONTENTS: What are auxiliary components
Why auxiliary components are not used all the time
Discharge line
Service valve
Muffler
High-pressure control
Oil separator
Check valve
Vibration
Direction of drier
Liquid line drier
Shell & core drier
Sight glass
Liquid line solenoid
King valve
Receiver
Queen valve
Suction line filter drier
Heat exchanger
Accumulation
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Refrigeration Services Inc.
Alco
Sporlan
Handouts
Overheads
(P.B.F.) Tim 08 & Tim 09
EVALUATION: Quiz Whitman Johnson
   
DAY 9 SUBJECT: Basic System Components and Their Operation
GOAL: Refrigeration valves
OBJECTIVES: Student will be able to:
Recognize/discuss the following
Schrader valves
Service valves
Charging valves
Kind valves
Queen valves
Understand valve positions
Front seat
Back seat
Cracked
Discuss how these valves and positions affect the refrigeration system
SUBJECT CONTENTS: Refrigeration valves
Shut off valves
Service valves
Front seating
Back seating
Cracking the service valve
Auxiliary port
Ports on service valve
Schrader valves
Changing valves
King valve
Queen valve
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Allied Signal Inc.
Video Tapes
Handouts
Overheads
P.B.F. (Tim 11 & Tim 12)
EVALUATION: Quiz Whitman Johnson
   
DAY 10 SUBJECT: Basic System Components and Their Operation
GOAL: Maintenance of drainage system, motors & pulley, belts, and evaporator filters.
OBJECTIVES: Student will be able to:
Recognize/replace motor belts and pulleys
Recognize/replace the evaporator filters
Locate the drainage system
Discuss the proper way to clean the drain pan
Check condensate pumps
SUBJECT CONTENTS: Drain system
Pans
How do we maintain these pans
Drain line and traps
Traps
Gravity lines
Condensate pumps
Vents
Auxiliary pans
Filters
Belts
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Video Tapes
Handouts
Overheads
P.B.F. (Tim 13 & Tim 14)
EVALUATION: Quiz Whitman Johnson
   
DAY 11 SUBJECT: Basic System Components and Their Operation
OBJECTIVES: Student will be able to:
Recognize a package unit and discuss its components
Recognize a split system
Recognize a condensing unit
Discuss the components of the condensing unit
Recognize an air handler
Discuss the components of the air handler and special air conditioning systems
SUBJECT CONTENTS: Package unit
Condensing unit
Remote condenser unit
Rooftop package
Condenser less package
Air handler
Package chiller
Computer room package unit
Built up system
Rooftop multizone hot & cold deck package unit
Cooling towers
Evaporative condenser
Dry coolers, fluid coolers
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Overheads
Handouts
Video Tapes
EVALUATION: Quiz Whitman Johnson
   
DAY 12 SUBJECT: Basic System Components and Their Operation
OBJECTIVES: Student will be able to:
Understand the purpose of the cooling tower
Recognize/discuss the natural draft cooling tower
Discuss the open type cooling tower
Discuss the forced draft cooling tower
Discuss various water supplies for cooling towers
SUBJECT CONTENTS: Cooling tower
Concepts of cooling towers
City water
Open type cooling towers
Natural draft cooling tower
Maintenance of this component
METHODS/
TECHNIQUES:
Whitman Johnson Edition #4
Overheads
Handouts
Videotapes
Malley tower
B.A.C. tower
EVALUATION: Quiz Whitman Johnson
   
DAY 13 SUBJECT: Basic System Components and Their Operation
GOAL: Final Exam
100 questions