🔍 Key Concepts

• Boiler water carryover and how it affects steam quality • Relationship between moisture in steam and superheater outlet temperature • What happens to drum level and chemistry when water is carried over with the steam

💭 Think About

• If water droplets are being carried with the steam, what happens to the energy that would normally only heat dry steam? How would that show up in superheater outlet temperature? • Would carryover make it easier or harder to control boiler water chemistry in the drum itself? Why? • If water is being carried out of the drum with the steam flow, what trend would you expect to see in drum level over a short period of time in a steady steaming condition?

✅ Before You Answer

• Link wet vs dry steam to expected change (up or down) in superheater outlet temperature • Consider whether drum level would change slowly or suddenly in true carryover, assuming firing rate and feed rate are steady • Think about whether chemistry control problems are a primary symptom or a secondary, longer‑term effect of carryover