Commercial Refrigeration Unit 16
Questions and Answers 100%
Correct
How deep should the condensate drain trap be? - ANSWER - 3 inches deep (teacher
agrees, this answer is bullshit)
Commercial refrigeration equipment for ice cream storage typically uses: - ANSWER
- Low temperature evaporators
The wet coil static pressure drop is - ANSWER - Higher than the dry coil static
pressure drop
For what is the last part of the evaporator used? - ANSWER - Superheat the
refrigerant
Refrigerant enters as a saturated mixture and leaves as a: - ANSWER - superheated
vapor
What does it mean for a condenser and evaporator coil to be an "AHRI Match" -
ANSWER - AHRI has tested the components and certified that they work correctly
together
The percentage of air that travels through a tube and fin coil without touching any
coil surface is called the: - ANSWER - Bypass factor
On a commercial refrigeration system with electric defrost, what does the
compressor do during the defrost cycle? - ANSWER - it shuts off
The refrigeration system component that absorbs heat out of the product is the -
ANSWER - evaporator
, Commercial refrigeration equipment for meat storing typically uses - ANSWER -
Medium temperature evaporators
What controls the length of the defrost cycle on most commercial refrigeration
systems? - ANSWER - The defrost termination thermostat
A solution used as a secondary refrigerant in chillers consisting of water and a
chemical which lowers the water's freezing point is called - ANSWER - Brine
On a commercial refrigeration system with electric defrost, what does the
evaporator fan do during the defrost cycle? - ANSWER - it shuts off
The purpose of the trap in a condensate drain is to - ANSWER - offset the negative
pressure on the drain that can prevent the water from draining
How does an air defrost system work? - ANSWER - Air from in the store is directed
over the evaporator
Latent cooling - ANSWER - Removes water from the air
To increase latent cooling capacity - ANSWER - Reduce the airflow over the
evaporator
Commercial refrigeration equipment for dry storage typically uses: - ANSWER - high
temperature evaporators
An evaporator in which refrigerant enters as a saturated liquid vapor mix and leaves
as a superheated vapor is a: - ANSWER - Direct expansion evaporator
In a flooded chiller - ANSWER - The water is in the tubes and the refrigerant is in the
shell
Questions and Answers 100%
Correct
How deep should the condensate drain trap be? - ANSWER - 3 inches deep (teacher
agrees, this answer is bullshit)
Commercial refrigeration equipment for ice cream storage typically uses: - ANSWER
- Low temperature evaporators
The wet coil static pressure drop is - ANSWER - Higher than the dry coil static
pressure drop
For what is the last part of the evaporator used? - ANSWER - Superheat the
refrigerant
Refrigerant enters as a saturated mixture and leaves as a: - ANSWER - superheated
vapor
What does it mean for a condenser and evaporator coil to be an "AHRI Match" -
ANSWER - AHRI has tested the components and certified that they work correctly
together
The percentage of air that travels through a tube and fin coil without touching any
coil surface is called the: - ANSWER - Bypass factor
On a commercial refrigeration system with electric defrost, what does the
compressor do during the defrost cycle? - ANSWER - it shuts off
The refrigeration system component that absorbs heat out of the product is the -
ANSWER - evaporator
, Commercial refrigeration equipment for meat storing typically uses - ANSWER -
Medium temperature evaporators
What controls the length of the defrost cycle on most commercial refrigeration
systems? - ANSWER - The defrost termination thermostat
A solution used as a secondary refrigerant in chillers consisting of water and a
chemical which lowers the water's freezing point is called - ANSWER - Brine
On a commercial refrigeration system with electric defrost, what does the
evaporator fan do during the defrost cycle? - ANSWER - it shuts off
The purpose of the trap in a condensate drain is to - ANSWER - offset the negative
pressure on the drain that can prevent the water from draining
How does an air defrost system work? - ANSWER - Air from in the store is directed
over the evaporator
Latent cooling - ANSWER - Removes water from the air
To increase latent cooling capacity - ANSWER - Reduce the airflow over the
evaporator
Commercial refrigeration equipment for dry storage typically uses: - ANSWER - high
temperature evaporators
An evaporator in which refrigerant enters as a saturated liquid vapor mix and leaves
as a superheated vapor is a: - ANSWER - Direct expansion evaporator
In a flooded chiller - ANSWER - The water is in the tubes and the refrigerant is in the
shell
