🔍 Key Concepts

• Steam quality definition (percentage of vapor vs. liquid in a steam-water mixture) • Difference between saturated wet steam, dry saturated steam, and superheated steam • What happens to moisture content as steam passes through a superheater or desuperheater

💭 Think About

• Which part of the boiler system would reasonably contain a mixture of water and steam at the same time? • In which locations would you expect steam to be completely dry or superheated, and where would it still contain significant moisture (like 10%)? • Think about the purpose of a superheater and a desuperheater: do they increase or decrease temperature relative to saturation, and how does that affect moisture content?

✅ Before You Answer

• Remember that superheated steam is, by definition, above saturation temperature and has effectively no liquid water present (quality at or beyond 100%) • Identify which component is designed to separate water from steam and hold both phases together. • Verify which option logically matches a wet, two-phase mixture that could be around 90% steam and 10% water by mass.