🔍 Key Concepts

• Steam flow path in a water-tube boiler – where water enters, where steam is formed, and where it goes next • The specific purpose of each component: economizer, superheater, mud drum, and firebox • Difference between steam that is just at saturation temperature and steam that is heated further (superheated)

💭 Think About

• After steam is generated in the tubes, think about which component is designed specifically to raise steam temperature without significantly raising pressure • Ask yourself: which of the listed parts deals mainly with feedwater and which deals with steam? • Consider where the hottest flue gases are directed when the goal is to dry and further heat the steam rather than boil more water

✅ Before You Answer

• Identify which component’s main job is to add heat to feedwater, not steam • Identify which component collects sediment and sludge and is mostly filled with water, not steam space • Identify which component is located in the gas path after the generating tubes and is specifically arranged for steam to pass through it and gain extra temperature beyond saturation