Which of the following represents the...

🔍 Key Concepts

• Review how ejectors work: they always need a high‑pressure motive fluid to entrain and remove air/brine from the evaporator. • Look closely at the diagram piping around the ejector assembly (usually at the bottom of the unit) and trace where that driving fluid comes from and where it goes. • Think about the normal uses of jacket water, brine discharge, and feedwater in an evaporator system and which of these is typically at a suitable pressure and flow to drive an ejector.

💭 Think About

• On the illustration, follow the line that feeds the ejector nozzles: which pump is it connected to, and what does that pump normally handle? • Ask yourself: which of the listed fluids would be both continuous and expendable (okay to send overboard) when used as a driving jet through an ejector? • Consider which of the choices would NOT make sense: would you want to use treated feedwater or relatively low‑pressure jacket water as a sacrificial high‑velocity jet?

✅ Before You Answer

• Verify on the drawing which pump discharges directly to the ejector nozzles before going to the overboard/brine line. • Confirm that the fluid used as motive power is something you can waste overboard without concern for treatment quality. • Double‑check that the fluid chosen would normally be at a higher pressure than the evaporator shell, suitable to create suction in the ejector.

Which of the following represents the motivating power fluid used in conjunction with the ejector pumps on plate type evaporators?

The motive power is the jacket water flowing through the ejectors.

The ejectors do not require a motive power.

The motive power is the brine pump output, prior to being discharged overboard.

The motive power is the feedwater supply.

🔍 Key Concepts

💭 Think About

✅ Before You Answer