Question

Brine is used as a secondary refrigerant in:

• A. Domestic refrigerator
• B. Ice plant
• C. Window air conditioner
• D. Freezer

Hint:

Brine helps freeze water into ice blocks — that’s why it’s used in ice plants!

Answer 1

The Correct Option is B

A secondary refrigerant is a fluid that transfers heat from the space being cooled to the primary refrigerant.
Brine is a common secondary refrigerant used because it remains liquid at low temperatures and carries heat efficiently.
In ice plants, brine circulates around ice cans to absorb heat and help form ice quickly and uniformly.
Domestic refrigerators and window air conditioners usually use direct expansion systems, not brine.
A freezer in a household setup does not typically use brine either.
So, brine as a secondary refrigerant is mainly used in industrial setups like ice plants.