In order to prevent salt water contamination...

🔍 Key Concepts

• Flash-type evaporator flow path – where seawater enters, turns to vapor, and where fresh distillate is collected • Source of contamination – think about which component separates salt water from the fresh distillate stream • Seal function – which part, if it leaks, would let salty brine get into the distillate instead of staying in the brine side

💭 Think About

• Trace the path: seawater in → heated → flashes to vapor → passes through a separation stage → condenses as distillate. At what boundary does a leak directly mix brine with distillate? • Ask yourself which choice is directly at the interface between the brine side (salty) and the distillate side (fresh) rather than just handling steam or air. • Consider which component’s job is mainly to shape spray, remove droplets, vent air/steam, or control flow, versus which one must absolutely not allow liquid brine to bypass it.

✅ Before You Answer

• Identify which component is closest to the phase separation zone (where brine and vapor separate) and could let liquid brine shortcut into the distillate if the seal fails. • Verify which items (spray caps, demisters, vents, orifice plate) normally contact liquid brine versus mostly vapor or steam. • Confirm which part’s failure would immediately show up as high salt content in the distillate rather than just reduced capacity or efficiency.

In order to prevent salt water contamination of the distillate in a flash-type evaporator, it is important to provide a positive seal around the __________.

spray caps

demisters

saltwater heater vents

steam supply orifice plate

🔍 Key Concepts

💭 Think About

✅ Before You Answer