CORRECT ANSWERS|LATEST !!!!2026|GRADED
Conduction is defined as heat energy that is - ANSWER moving through a solid
substance
What is the primary purpose of a refrigeration system ? - ANSWER achieve and
maintain a temperature
What is a hazard of trapping liquid ? - ANSWER A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of temperature
increase - ANSWER 100 to 150 psi
Mechanical refrigeration is a series of steps that - ANSWER moves heat energy from
a space or object to an area where it can do no harm
How does the refrigeration compressor maintain the temperature in the system evaporators
? - ANSWER Drawing out vaporized refrigerant at a rate to maintain the desired
evaporating pressure
Which natural refrigerant is considered to be non- flammable - ANSWER Carbon
Dioxide
Heat energy always flows - ANSWER from an object at a higher temperature to an
object at a lower temperature
1
, 32 psia equals - ANSWER 17.3 psig
0 ° F is equal to - ANSWER -18 ° C
Why does the refrigerant in the condenser change state from vapor to liquid -
ANSWER The refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -
ANSWER Subcooled
What are the four necessary components of a mechanical refrigeration system ? -
ANSWER expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? - ANSWER The compressor
suction and compressor discharge line
What are the replacement blended refrigerants called ? - ANSWER An azeotrope or
zeotrope
What is one positive characteristic of halocarbon refrigerants ? - ANSWER They are
usually not flammable
What is the primary reason for concern about HCFC- 22 concentration in an engine room ? -
ANSWER Oxygen deprivation
O psig is equal to - ANSWER 14.7 psia
Discharge vapor from all compressors - ANSWER will contain some level of
superheat
2
Conduction is defined as heat energy that is - ANSWER moving through a solid
substance
What is the primary purpose of a refrigeration system ? - ANSWER achieve and
maintain a temperature
What is a hazard of trapping liquid ? - ANSWER A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of temperature
increase - ANSWER 100 to 150 psi
Mechanical refrigeration is a series of steps that - ANSWER moves heat energy from
a space or object to an area where it can do no harm
How does the refrigeration compressor maintain the temperature in the system evaporators
? - ANSWER Drawing out vaporized refrigerant at a rate to maintain the desired
evaporating pressure
Which natural refrigerant is considered to be non- flammable - ANSWER Carbon
Dioxide
Heat energy always flows - ANSWER from an object at a higher temperature to an
object at a lower temperature
1
, 32 psia equals - ANSWER 17.3 psig
0 ° F is equal to - ANSWER -18 ° C
Why does the refrigerant in the condenser change state from vapor to liquid -
ANSWER The refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -
ANSWER Subcooled
What are the four necessary components of a mechanical refrigeration system ? -
ANSWER expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? - ANSWER The compressor
suction and compressor discharge line
What are the replacement blended refrigerants called ? - ANSWER An azeotrope or
zeotrope
What is one positive characteristic of halocarbon refrigerants ? - ANSWER They are
usually not flammable
What is the primary reason for concern about HCFC- 22 concentration in an engine room ? -
ANSWER Oxygen deprivation
O psig is equal to - ANSWER 14.7 psia
Discharge vapor from all compressors - ANSWER will contain some level of
superheat
2
