In the unit illustrated, the feed water temperature is required to be increased to 165°F or greater and must exist at this temperature when leaving __________. Illustration GS-0053

Correct Answer: Option D — V

In flash evaporator systems, the feed water must reach a specific temperature to ensure efficient flashing in the vacuum chambers. Component V represents the final stage of the feed heater, where the water must reach 165°F to ensure the required evaporation rate is achieved in the subsequent stages.