🔍 Key Concepts

• Condensate flow direction shown in the illustration and what that usually indicates about the type of heater • The presence of an attached drain cooler / auxiliary section below the main shell and how that relates to low‑pressure vs high‑pressure feed heaters • Typical services for a Butterworth heater and a flash evaporator salt water feed heater on a steam plant

💭 Think About

• Look closely at the arrows labelled condensate inlet and outlet. In a feed‑heating system, which side (shell or tubes) normally carries condensate in low‑pressure vs high‑pressure heaters? • The small vertical unit beneath the main shell cools drains coming from several heaters. Which type of feed heater is commonly combined with a drain cooler in one shell? • On your plant, where would you expect to find a Butterworth heater or a flash evaporator feed heater located, and would their drawings usually emphasize main feedwater/condensate flow the way this one does?

✅ Before You Answer

• Verify which answer choices normally handle condensate from multiple sources and include a drain cooler section. • Confirm whether a Butterworth or flash evaporator feed heater would typically be labeled with condensate inlet/outlet instead of tank‑cleaning water or seawater flow. • Check if high‑pressure feed heaters are usually drawn with this large shell diameter and attached vertical drain cooler, or if that configuration is more typical of low‑pressure units.