The pipe identified by the letter "J" shown in the illustration is __________. Illustration MO-0110

Correct Answer: Option D — attached to the air ejector

Pipe J is connected to the air ejector, which is essential for maintaining the vacuum within the evaporator shell. The ejector uses a high-velocity fluid stream to draw out non-condensable gases and air, ensuring the system operates at the low pressure required for efficient low-temperature evaporation.