Water circulation in a water-tube boiler is...

Water circulation in a water-tube boiler is...

Question 1 of 270705eccef9fbacbc34ba4d46c5c

Water circulation in a water-tube boiler is a result of the __________.

Question 1 of 27070

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Water circulation in a water-tube boiler is a result of the __________.

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🔍 Key Concepts

• Natural vs. forced circulation in water-tube boilers • How water density changes with temperature in boiler tubes • Flow path of water from drum → downcomers → generating tubes → drum

💭 Think About

• Think about what actually makes the water move inside the tubes once the boiler is firing, even if the feed pump stopped for a moment. • Consider what happens to water when it is heated in vertical tubes compared to cooler water in other parts of the boiler. • Ask yourself: which option would still cause circulation even without any moving mechanical parts?

✅ Before You Answer

• Verify which choice involves a difference in density due to heating. • Check which options describe something that would work only when a pump or flow device is running versus a passive effect. • Eliminate any option that suggests a siphon or shape effect that doesn’t depend on temperature and density changes.