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Back-to-back seal
A back-to-back seal describes two shaft seals mounted back-to-back to provide a higher level of safety and reliability.
Backflow
The flow of piped medium in the direction opposite to normal flow is called backflow. It is caused by a difference in water pressures.
BACnet
BACnet is a data communication protocol for Building Automation and Control Networks.
Baffle
The term baffle covers a flat board or plate, deflector vanes, guides, grids, gratings or similar devices constructed or placed in flowing water, wastewater or slurry systems.
Balance point
In any thermal heat exchange process, a mixture of two energy flows will result in a new stage or phase called the balance point.
Balancing
Balancing of heating and cooling systems is performed to ensure that the correct amount of water is present at all consumption points.
Balancing valve
During commissioning of heating and cooling systems, hydraulic balance is often achieved using balancing valves; static or dynamic.
Biocide
Biocide is a chemical added to the make-up water for evaporative applications such as condensers and cooling towers.
Biofilm
Biofilm refers to a population of various micro-organisms trapped in a layer of slime and organic matter that attaches itself to the surfaces of pumps, pipes, walls etc.
BMS (Building Management System)
A BMS is an integrated data network and control system for automation, monitoring and control of HVAC, lighting and other functions in a building.