What is the source of heat for a third stage...

Question 1 / 2707066636ef128f7522a1c52195b

Question 1 of 2707066636ef128f7522a1c52195b

What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load?

Question 1 of 27070

What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load?

🔍 Key Concepts

• Typical steam turbine feedwater heating sequence (from condenser to boiler) • Difference between auxiliary exhaust steam and turbine bleed steam while underway at full sea speed • How pressure level (low/intermediate/high) usually corresponds to feed heater number/stage

💭 Think About

• When the plant is at full load, which steam source is most continuously available and at the right pressure to heat a later (third) stage feed heater? • Think about where the first, second, and third stage heaters are located in the feed system and whether they normally use lower or higher pressure steam as you get closer to the boiler. • Would auxiliary machinery exhaust be the main heating source at sea under full load, or is it more important in port/low-load operations?

✅ Before You Answer

• Verify the direction of feedwater flow (from condenser toward the boiler) and how heater stage number usually increases along that path. • Match the stage number (third) with a reasonable steam pressure level used for that heater in standard regenerative cycles. • Confirm whether auxiliary exhaust steam is normally abundant at full sea speed when main turbines and turbo‑generators are carrying the load.

Question 1 of 27070

What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load?

High pressure bleed steam

Auxiliary exhaust steam

Low pressure bleed steam

Intermediate pressure bleed steam

Question 1 / 2707066636ef128f7522a1c52195b

Question 1 of 2707066636ef128f7522a1c52195b

What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load?

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Question 1 of 27070

What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load?