Discharging an excessive amount of cold...

Question 1 / 205eccef9cbacbc34ba4d457b8

Question 1 of 205eccef9cbacbc34ba4d457b8

Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.

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Question 1 of 20

5eccef9cbacbc34ba4d457b8

Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.

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🔍 Key Concepts

• Function of a D.C. (de-aerating) heater in a marine steam plant • Effect of feedwater temperature on dissolved gases such as oxygen and carbon dioxide • Relationship between water temperature and risk of flashing or cavitation at the feed pump suction

💭 Think About

• Ask yourself: What is the main job of the D.C. heater in the feedwater system, besides just heating the water? • If you suddenly add a lot of cold water, what happens to the temperature and how does that affect the removal of dissolved gases? • Which of the listed problems is most directly linked to changes in dissolved gases versus changes in pressure or flow?

✅ Before You Answer

• Verify which choice is directly connected to dissolved oxygen content in the feedwater. • Check whether flashing at the feed pump suction is more likely with hotter or colder water at a given pressure. • Confirm which options (if any) would normally be associated with the economizer or back pressure in the exhaust system, and rule those out if they don’t relate to the D.C. heater’s primary function.

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Question 1 of 20

Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.

flashing at the feed pump suction

excess oxygen in the feed water

water hammer in the economizer

increased back pressure

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Question 1 / 205eccef9cbacbc34ba4d457b8

Question 1 of 205eccef9cbacbc34ba4d457b8

Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.

Back

Question 1 of 20

5eccef9cbacbc34ba4d457b8

Discharging an excessive amount of cold water into the DC heater during normal steaming conditions could cause __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed