Question 14Refrigeration & AC - Assistant Engineer

The correct answer is B) condense the refrigerant gas. The purpose of using sea water or low temperature central fresh water in a ship's stores refrigeration plant is to condense the refrigerant gas. As the refrigerant gas flows through the condenser, the seawater or fresh water absorbs the heat from the gas, causing it to condense back into a liquid state. This condensation is a critical step in the refrigeration cycle, as it allows the refrigerant to be reused and the cycle to continue. The other answer choices are incorrect because they do not directly relate to the primary purpose of the seawater or fresh water in the refrigeration system. Preventing motor overheating (A), preventing refrigerant superheating (C), and cooling the expansion valve (D) are not the main functions of the water in this context.