How is the ice harvested from the evaporator plates in an ice harvesting system?
A) by warming the evaporator plates with refrigerant discharge gas
B) by mechanically scraping the ice off of the evaporator plates using an ice-harvesting arm
C) using high frequency ultrasonic waves that shatter the plate of ice
D) by energizing electric defrost heaters imbedded in the evaporator
Question 2
How can ice storage help reduce system operating cost?
A) By reducing the condenser temperature and pressure using stored ice
B) By charging the ice storage system during off-peak hours when electricity is less expensive
C) By lowering the chiller evaporator temperature, making it operate more efficiently
D) By supercooling the chilled water with ice
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