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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. It is a standardised technology for building automation and supports a variety of specific physical network standards, which makes it ideal for use on all automation levels.
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.
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. Here, a common temperature, humidity or enthalpy is reached.
Balancing valve
During commissioning of heating and cooling systems, hydraulic balance is often achieved using balancing valves; static or dynamic
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.
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.
BOD (Biochemical Oxygen Demand)
The quantity of oxygen consumed by aerobic microorganisms during the decomposition of organic matter in a water sample is defined as the Biochemical Oxygen Demand (BOD).