Sample interview questions: Can you explain your knowledge of different types of air separators used in hydronic systems?
Sample answer:
Types of Air Separators in Hydronic Systems:
1. Micro Bubble Separators:
- Captures small air bubbles (less than 100 microns)
- Utilizes a mesh or fiber element to create turbulence and coalesce bubbles
- Efficient at removing entrained air during system filling and operation
2. Venturi Separators:
- Creates a high-velocity zone to shear air bubbles from water
- Uses a Venturi nozzle to constrict flow and generate turbulence
- Removes large amounts of air quickly, typically during system pressurization
3. Expansion Tank Separators:
- Utilizes a diaphragm or bladder to create a variable-volume chamber
- Air accumulates in the chamber, creating a cushion and eliminating pressure fluctuations
- Effective in removing dissolved air from the system
4. Cyclone Separators: