🔍 Key Concepts

• Think about the overall function of a flash-type distilling unit (evaporator) and how seawater moves through it. • Compare what happens in the heating/boiling section versus what happens in the condensing section of the shell. • Use the flow arrows and colors in area "G" on MO‑0110 to decide whether water is being heated, flashed to vapor, or cooled/condensed there.

💭 Think About

• Trace the path of the feed water from where it first enters the unit, through the heater bundle, and then into section "G". What physical change does it undergo at that point, especially under vacuum conditions? • Look at where the distillate (fresh water) is actually collected in the drawing. Is that collection occurring in section "G" or somewhere else inside the shell? • Ask yourself: in which section are the cooling tubes or condensing surfaces located? Is that above or below the baffle that separates sections "F" and "G"?

✅ Before You Answer

• Verify whether area "G" is above or below the main internal baffle and which side contains the condensing tubes/coil. • Confirm from the arrows in area "G" whether the flow shown is liquid turning into vapor or vapor turning into liquid. • Make sure the choice you pick matches both the vacuum conditions inside the shell and the direction of vapor flow toward the condensing section.