🔍 Key Concepts

• Typical sections of a closed regenerative feedwater heater (desuperheating zone, condensing zone, drain cooling zone) • Where drains from higher-pressure heaters or auxiliaries are usually routed in the feedwater heating system • How the lowest compartment in the shell is used in multi-zone heaters

💭 Think About

• Trace the path of the blue dashed condensate/Drain lines in the illustration and note what flows into and out of section "E". • Ask yourself: is section "E" primarily heating incoming feedwater, condensing steam, or sub‑cooling condensate/drains before discharge? • Compare the function of dedicated gland exhaust condensers and after condensers in a steam plant to decide whether they are normally built into this piece of equipment or are separate units.

✅ Before You Answer

• Verify which nozzles and piping connect to section E (look at labels near "L" and "M") and what they are used for. • Confirm whether steam enters directly into section E, or if it mainly receives condensate/drains from the upper sections. • Make sure the chosen option is the section that handles the cooling of drains/condensate before they leave the heater, not the main feedwater heating stages.