Chiller boiler system
Encyclopedia
A chiller boiler system is a chiller
, boiler
, pumps
and HVAC controls
in a single pre-engineered package. This reduces complexity for the field installer and increases the simplicity of installation overall. Most chiller boiler packaged systems are designed for large residential and small commercial structures.
A chiller boiler system is a hydronic
system—it uses water instead of air to heat and cool a structure. A properly designed hydronic system is usually more efficient than a standard forced air system.
Chiller boiler systems use radiant heating
and cooling or fan coil
systems to condition a home or business. This allows for multiple zones (a thermostat in each living area of the house) for increased comfort and decreased energy use.
Compared with air, water is a more space-efficient method of transferring heat and cold around a building. A 1" pipe delivers the same amount of heat as an 18" air duct - and is much easier to install in small spaces.
Chiller
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool air or equipment as required.-Use in air conditioning:...
, boiler
Boiler
A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications.-Materials:...
, pumps
Centrifugal pump
A centrifugal pump is a rotodynamic pump that uses a rotating impeller to create flow by the addition of energy to a fluid. Centrifugal pumps are commonly used to move liquids through piping...
and HVAC controls
HVAC control system
-Direct digital control:Central controllers and most terminal unit controllers are programmable, meaning the direct digital control program code may be customized for the intended use. The program features include time schedules, setpoints, controllers, logic, timers, trend logs, and alarms...
in a single pre-engineered package. This reduces complexity for the field installer and increases the simplicity of installation overall. Most chiller boiler packaged systems are designed for large residential and small commercial structures.
A chiller boiler system is a hydronic
Hydronics
Hydronics is the use of water as the heat-transfer medium in heating and cooling systems.Some of the oldest and most common examples are steam and hot-water radiators. Historically, in large-scale commercial buildings such as high-rise and campus facilities, a hydronic system may include both a...
system—it uses water instead of air to heat and cool a structure. A properly designed hydronic system is usually more efficient than a standard forced air system.
Chiller boiler systems use radiant heating
Radiant heating
Radiant heating is a technology for heating indoor and outdoor areas. Heating by radiant energy is observed everyday, the warmth of the sunshine being probably the most commonly observed example. Radiant heating as a technology is typically more narrowly defined...
and cooling or fan coil
Fan coil unit
A fan coil unit is a simple device consisting of a heating or cooling coil and fan. It is part of an HVAC system found in residential, commercial, and industrial buildings. Typically a fan coil unit is not connected to ductwork, and is used to control the temperature in the space where it is...
systems to condition a home or business. This allows for multiple zones (a thermostat in each living area of the house) for increased comfort and decreased energy use.
Compared with air, water is a more space-efficient method of transferring heat and cold around a building. A 1" pipe delivers the same amount of heat as an 18" air duct - and is much easier to install in small spaces.