hydronics
Sign in to saveHydronics () is the use of liquid water or gaseous water (steam) or a water solution (usually glycol with water) as a heat-transfer medium in heating and cooling systems. The name differentiates such systems from oil and refrigerant systems.
Article
28 sectionsContents
- District heating
- Types of hydronic system
- Basic types
- Classification
- Piping arrangements
- Single-pipe steam
- Two-pipe steam systems
- Two-pipe direct return system
- Advantages
- Disadvantages
- Two-pipe reverse return system
- Advantages
- Disadvantages
- Water loops
- Improved efficiency and operating costs
- Balancing
- Boiler water treatment
- Air elimination
- Water-loop system
- Free air
- Entrained air
- Dissolved air
- Accommodating thermal expansion
- Automatic fill mechanisms
- Safety mechanisms
- Typical schematic with control devices shown
- See also
- References
Hydronics () is the use of liquid water or gaseous water (steam) or a water solution (usually glycol with water) as a heat-transfer medium in heating and cooling systems. The name differentiates such systems from oil and refrigerant systems.
Historically, in large-scale commercial buildings such as high-rise and campus facilities, a hydronic system may include both a chilled and a heated water loop, to provide for both heating and air conditioning. Chillers and cooling towers are used either separately or together as means to provide water cooling, while boilers heat water. A recent innovation is the chiller boiler system, which provides an efficient form of HVAC for homes and smaller commercial spaces.