Question 32Refrigeration & AC - 1st Asst/Chief

The correct answer is B) Brine. Brine, which is a saltwater solution, is a suitable secondary refrigerant. Secondary refrigerants are used to transfer heat from the primary refrigerant to the load, and brine is commonly used in this application due to its thermal properties and ability to remain liquid at low temperatures. The other options are not suitable as secondary refrigerants. Cuprous chloride (A) is a copper-based compound, methyl alcohol (C) is a flammable alcohol, and carbon dioxide (D) is a gas that would not be an effective liquid refrigerant.