Feed water heaters are used aboard steam...

Question 1 / 270705eccef9cbacbc34ba4d45790

Question 1 of 270705eccef9cbacbc34ba4d45790

Feed water heaters are used aboard steam vessels to reduce thermal shock to the boiler and to __________.

Question 1 of 27070

Feed water heaters are used aboard steam vessels to reduce thermal shock to the boiler and to __________.

🔍 Key Concepts

• Feed water heaters purpose in a steam plant • Difference between thermal efficiency and mechanical efficiency • What happens when you use turbine bleed steam or exhaust steam to preheat feed water

💭 Think About

• Ask yourself: When feedwater is preheated before entering the boiler, how does that affect the amount of fuel/heat the boiler must add to make steam? • Which type of efficiency is changed when you recover waste heat and need less fuel for the same steam output? • Do feedwater heaters mainly protect equipment, improve energy use, change mechanical losses, or control exhaust pressure?

✅ Before You Answer

• Identify whether the heater is mainly recovering waste heat or creating new work • Decide if the change is in energy conversion (thermal) or in moving parts and friction (mechanical) • Check which option describes an effect on the overall heat-use efficiency of the plant, not just a side function like providing a place for steam to go

Question 1 of 27070

Feed water heaters are used aboard steam vessels to reduce thermal shock to the boiler and to __________.

increase plant mechanical efficiency

act as a heat sink for turbine bleed steam

improve thermal efficiency

reduce back pressure in the auxiliary exhaust line

Question 1 / 270705eccef9cbacbc34ba4d45790

Question 1 of 270705eccef9cbacbc34ba4d45790

Feed water heaters are used aboard steam vessels to reduce thermal shock to the boiler and to __________.

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Question 1 of 27070

Feed water heaters are used aboard steam vessels to reduce thermal shock to the boiler and to __________.