Introduction
The
refrigerator : an introduction
The
phenomenon of boiling
Does
water always boil at 100°C?
The
Pressure–Temperature relationship
Relative
Pressure and Absolute Pressure
Is
water a good refrigerant?
Refrigerant
R22
The
refrigeration engineer’s gauges
The
evaporation of R22
What
happens in the cold heat exchanger (the freezer)?
The
phenomenon of condensation
The
role of the compressor
The
role of the expansion device
The
refrigeration cycle
From
the Fridge to Air Conditioning
The
Window A/C Unit
Split
System A/C Units
The
Piston Compressor : normal operation
The
Air- Cooled Condenser : normal operation
The
Capillary Expansion Device : normal operation
The
Evaporator : normal operation
The
Complete Circuit : normal operation
Technical
Data: general points
Technical
Data: Power and Capacities
Dry
and Wet Temperature
Cooling
Capacity
Dehumidification
Rate
Heating
Capacity
Power
Consumed
Technical
Data: The Internal Unit
Reference
Numbers and types of unit
Voltage,
current and electrical power
The
remote control
Modes
of operation of the A/C system
Noise
levels
Fans
Filters
Technical
Data: the External Unit
Reference
Numbers
Voltage,
Current and Electrical Power
Rotary
Compressors
The
Refrigerant used
Refrigeration
Oil
Various
types of Connections
Refrigeration
grade pipework
Refrigeration
connections
Refrigeration
pipework
What
is "flashing"?
Pipework
Insulation
Installation
of a Split-System Unit
Installation
of the internal unit
Installation
of the external unit
Using
service valves
Operations
on the Refrigeration Circuit
Evacuating
a System
Symptoms
of a Malfunction in a System
Interpretation
of a large or small superheat
Interpretation
of large or small sub-cooling
Interpretation
of a low or high LP (Low Pressure)
Faults
producing "Flash-gas"
Analysis
of the fault
Explanation
of the symptoms
Some
examples
Lack
of Expansion Device Capacity
Analysis
of the fault
Explanation
of symptoms
Some
examples
Lack
of Refrigerant
Analysis
of the fault
Explanation
of the symptoms
Some
practical considerations
Lack
of Evaporator Capacity
Analysis
of the fault
2
families of faults : lack of airflow and a fouled evaporator
Explanation
of the symptoms
Some
examples
Lack
of Condenser Capacity
Analysis
of the fault
2
families of faults and explanation of the symptoms
Some
examples
Excessive
Refrigerant Charge
Analysis
of the fault
Explanation
of the symptoms
Non-
Condensables
What
effects do non-condensables have?
Analysis
of the fault
Explanation
of the symptoms and some practical aspects
Lack
of Compressor Capacity
Analysis
of the fault
Explanation
of the symptoms and some practical aspects
A
Review of the principal refrigeration faults
The
Reversible A/C system
" summer "
operation
" winter "
operation
Some
faults associated with 4- way valves
The
liquid receiver
The
bi-directional filter drier
Single-
Phase Motors
General
Points
How
do you electrically test a motor?
Start-
up and Operating Capacitors
How
do we test Capacitors?
Start-
up systems found in comfort A/C
Contents
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