COMMERCIAL REFRIGERATION FINAL STUDY GUIDE WITH COMPLETE SOLUTION!!

COMMERCIAL REFRIGERATION FINAL STUDY GUIDE
WITH COMPLETE SOLUTION!!
The evaporator in a refrigeration system must be colder Than the refrigerated space
in order to absorb heat.

answers: True

The rule of thumb for low temperature refrigeration is 5 degrees superheat.



answers: True

Capillary tube systems are normally used for storage of already refrigerated
products.



answers: True

Fewer fins per inch on an evaporator allows more ice to build between defrost
cycles.



answers: True

Multiple circuit evaporator uses an externally equalized expansion valve.



answers: True

Refrigerants that boil off at different rates are called zeotropic blends.



answers: True

R-22 is considered a low pressure refrigerant.

, answers: False

High superheat means your TXV is flooding the coil.



answers: False

The fastest defrost method is hot gas defrost.



answers: True

Hot gas and electric defrost use the same time clock.



answers: True

If you are a refrigeration technician, a warm coat, hat and gloves should be in your
truck even in the middle of the summer.



answers: True

The voltage that opens the point of a potential real is called the drop-out voltage.



answers: True

The start capacitor is wired in series with the start relay.



answers: True

Walk-in box temperature box is not needed when calculating the TD of an
evaporator coil.