Question 78Refrigeration & AC - 1st Asst/Chief
70% to passZinc plates commonly found in refrigeration systems and used as sacrificial anodes are located where?
Arefrigerant side of the condenser
Bcooling water suction strainer
Csaltwater side of the condenser
Devaporator coils
AI Explanation
The correct answer is C) saltwater side of the condenser. Zinc plates are used as sacrificial anodes in refrigeration systems to protect the condenser from corrosion, specifically on the saltwater side of the condenser. Sacrificial anodes are made of a metal that is more electronegative than the metal of the condenser, causing the zinc to corrode preferentially and protect the condenser from galvanic corrosion. The other options are incorrect because the refrigerant side of the condenser (A) and the evaporator coils (D) do not require sacrificial anodes, and the cooling water suction strainer (B) is not the location for the zinc plates.
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