| 1.
|
Explain the theory of heat and define terms associated with the theory
of heat and heat transfer. (I)
|
| 2.
|
Convert temperature from Fahrenheit to Celsius and Celsius to
Fahrenheit and calculate the heat content of a substance. (II)
|
| 3.
|
Compare and contrast pressure, atmospheric pressure, barometric
pressure, gauge pressure and absolute pressure. (III)
|
| 4.
|
Differentiate between readings of the low side pressure gauge and the
high side gauge readings. (IV)
|
| 5.
|
Define the terms related to matter and energy. (V)
|
| 6.
|
Define "watt" and convert watt to horsepower to British Thermal
Units(BTUs) using equations and conversion factors. (VI)
|
| 7.
|
List the major components in specific refrigeration systems and
explain the function of each component. (VII)
|
| 8.
|
Sketch the major components of refrigeration systems and indicate the
direction of refrigerant flow and the points where pressure changes.
(VIII)
|
| 9.
|
State the BTU rating for one ton of refrigeration and how it is
calculated. (IX)
|
| 10.
|
Define the term "refrigerant", interpret the pressure - temperature
tables for refrigerants and list desirable properties of refrigerants
and appropriate safety precautions. (X)
|
| 11.
|
Describe temperature ranges of evaporators, common types of
evaporators and explain evaporator superheating (XI)
|
| 12.
|
Describe the major types (compression method) of compressors, methods
of compressor construction an explain compression ratio. (XII)
|
| 13.
|
Describe specific types of condensers, explain the functions of
condensers and determine condesing temperatures. (XIII)
|
| 14.
|
List common types of evaporators and determine evaporator pressure,
including what is meant by Direct Expansion (DX) and "flooded". (XIV)
|
| 15.
|
Describe the major types of metering devices and explain operations of
capillary tubes, thermostatic expansion valves, automatic expansion
valves and the process for checking superheat. (XV)
|
| 16.
|
Define specific terms related to the setting and operation of
pressurecontrols including, but not limited to: low pressure, high
pressure, dual pressure, oil pressure and pressure operated timing
divices. (XVI)
|
|