Level 4 Chapter 9
Commercial/Industrial Refrigeration
Question and answers 100% correct
2025/2026
In the freezing process, when is the sensible heat removed from the product being frozen? - correct
answer ✔Before and after the latent heat of fusion is removed
A fluid commonly used in cryogenic freezing is liquid - correct answer ✔Nitrogen
One advantage blast freezing offers over some other forms of freezing is - correct answer ✔The ability
to freeze foods of irregular size and shape
An optional process used in mobile refrigeration systems to minimize ripening of produce to extend its
shelf life is - correct answer ✔Controlled Atmosphere (CA)
The programmed staging of different sized compressors connected in parallel will result in - correct
answer ✔More steps of capacity than if using equally sized compressors
A satellite compressor - correct answer ✔Is a separate compressor that uses the same refrigerant
source as that used by a related group of parallel compressors
An accessory used to evaporate refrigerant from oil is the - correct answer ✔Crankcase Heater
Which of the following statements regarding evaporator pressure regulators (EPR) is true? - correct
answer ✔An EPR is installed between the evaporator and compressor
Commercial/Industrial Refrigeration
Question and answers 100% correct
2025/2026
In the freezing process, when is the sensible heat removed from the product being frozen? - correct
answer ✔Before and after the latent heat of fusion is removed
A fluid commonly used in cryogenic freezing is liquid - correct answer ✔Nitrogen
One advantage blast freezing offers over some other forms of freezing is - correct answer ✔The ability
to freeze foods of irregular size and shape
An optional process used in mobile refrigeration systems to minimize ripening of produce to extend its
shelf life is - correct answer ✔Controlled Atmosphere (CA)
The programmed staging of different sized compressors connected in parallel will result in - correct
answer ✔More steps of capacity than if using equally sized compressors
A satellite compressor - correct answer ✔Is a separate compressor that uses the same refrigerant
source as that used by a related group of parallel compressors
An accessory used to evaporate refrigerant from oil is the - correct answer ✔Crankcase Heater
Which of the following statements regarding evaporator pressure regulators (EPR) is true? - correct
answer ✔An EPR is installed between the evaporator and compressor
