Hydronics is the name for the use of
water as the heat-transfer medium in
heating and
cooling systems. Some of the oldest and most common examples are
steam or hot-water
radiators. In large-scale commercial buildings such as
high-rise and
campus facilities, a hydronics 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 separately or together as means to provide water cooling, while
boilers heat water. In addition, many larger cities have a
district heating system that provides, through underground piping, publicly available steam and chilled water. By paying a service fee, a building in the service district may be connected to these.
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