Question 364Motor Plants - Assistant Engineer

The correct answer is A) means of heating the feedwater. The diesel engine jacket water is used to heat the feedwater in the distillation process. The heat from the diesel engine's cooling system is transferred to the feedwater, providing the necessary heat to vaporize the water and produce distilled water. This is the primary function of the diesel engine jacket water in the fresh water distillation process. The other options are incorrect because: B) the vacuum in the distiller is typically created by a separate vacuum pump or ejector system, C) the distillate is cooled by a separate cooling system, and D) the brine cooler is also typically cooled by a separate cooling system, not the diesel engine jacket water.