🔍 Key Concepts

• Function of an accumulator in a water‑tube, coil‑type steam generator • What happens to a steam and water mixture when pressure and velocity change • How a separating nozzle or separator normally works in steam systems

💭 Think About

• In a coil‑type steam generator, what mixture actually enters the accumulator space before it goes to the system? • Which of the listed pairs (choices A–D) are normally found together in the same line or vessel in a high‑pressure steam generator? • Where would you normally remove sludge or condensate in a boiler system—at a nozzle in an accumulator, or somewhere else?

✅ Before You Answer

• Identify which choice describes two phases of the same substance in different states (liquid vs vapor) within the generator circuit • Eliminate any choices that describe processes usually handled by blowdown or external treatment rather than by a nozzle in an accumulator • Verify which option matches the usual purpose of a steam separator or separating nozzle in steam plant diagrams or textbooks