How does a cooling tower remove energy from the water it is circulating?
A) It cools the water flowing through it by evaporating a small portion of the water.
B) It cools the water flowing through it by passing it over ice that is made during off-peak hours.
C) It cools the water flowing through it by using a separate compression refrigeration system.
D) It cools the refrigerant by evaporating a small portion of the refrigerant to the air.
Question 2
Why would a temperature-differential defrost system NOT complete the defrost cycle?
A) There is too much heat available during defrost. B) There is a refrigerant undercharge.
C) The system defrosts too frequently. D) The fan blows warm air across the coil.