Question 34Refrigeration & AC - QMED
70% to passWhich of the fluids listed is suitable for use as a secondary refrigerant?
ACarbon dioxide
BCuprous chloride
CMethyl alcohol
DBrine
AI Explanation
The correct answer is D) Brine. Brine, which is a salt water solution, is commonly used as a secondary refrigerant in cooling systems. Brine has a low freezing point and can effectively transfer heat from the primary refrigerant to the environment. In contrast, the other options are not suitable for use as secondary refrigerants - carbon dioxide (A) is a primary refrigerant, cuprous chloride (B) is a corrosive chemical, and methyl alcohol (C) is a flammable liquid.
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