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 |
