🔍 Key Concepts

• function of element E as a temperature-sensing bulb or bellows that responds to condensate temperature/steam presence • relationship between sensor position and where steam is allowed to enter or is shut off inside the heat exchanger • how moving a sensor closer to the steam side versus the condensate side changes the location of the steam/condensate interface (condensation point)

💭 Think About

• What part of the system does E actually "feel" when it is moved closer to the top of B – hotter incoming steam, or cooler condensate that has given up heat? • If the sensor feels hotter fluid sooner, will the control valve try to close earlier (closer to the steam inlet) or later (closer to the condensate outlet)? • Which of the choices would be a direct consequence of shifting the location where the control element senses temperature, without changing spring settings or supply pressure?

✅ Before You Answer

• Identify clearly which side of the heat exchanger is the steam inlet and which is the condensate outlet in the drawing. • Trace the flow path of steam and condensate and mark mentally where the steam/condensate interface would be before and after moving E. • Confirm that nothing in the illustration indicates a change to the pressure set point mechanism (springs/adjusting screw), only a change in sensor position.