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Biocide
Biocide is a chemical added to the make-up water for evaporative applications such as condensers and cooling towers.
Break Tank
Break tanks are implemented in boosting systems in order to supply the system if the mains supply becomes insufficient. Tanks are also implemented in series-connected boosting systems.
BTU (British Thermal Unit)
The British thermal unit (BTU) is a unit of energy used in the power, steam generation, heating and air-conditioning industries. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the joule [J].
Buffer tank
A buffer tank is a storage tank used on the cold user side of an air-conditioning system. The tank is used as storage to cover peak loads or in situations when a surge in demand exceeds the capacity of the cooling system.
Butterfly valve
A butterfly valve is from a family of valves called quarter-turn valves. The butterfly is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway.
Bypass connection
Pipe connection between the suction and discharge side of a booster set in order to bypass water when the pumps are not in operation.
CFC (Chlorofluorocarbon)
CFC and HCFC refrigerants are detrimental to the breakdown of the ozone layer and the greenhouse effect. CFC is an abbreviation of chlorofluorocarbon; HCFC is an abbreviation of Hydrochlorofluorocarbon. They describe the molecules’ atom content.
Chilled beams
Passive and active chilled beams are used for cooling building air. Passive chilled beams cool the inside air without the noise and expense of ductwork and air handler units. Active chilled beams generally have much higher sensible cooling capacities than passive chilled beams.
Chilled room
A chilled room is a refrigerated area for cold storage of perishable items, especially food, to preserve them. In a chilled room the temperature is typically between 0 - 5°C.
Chiller
A chiller is a component that is used to cool water. The cooled water is pumped from the chiller to a water/air or water/water heat exchanger, where it can be used to cool air or water respectively.