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COD (Chemical Oxygen Demand)
Chemical oxygen demand is a measure of the total quantity of oxygen required to oxidize all organic material (biologically available, inert organic matter) into carbon dioxide and water, and oxidisable inorganic matter.
Cold water
Domestic cold water covers the water that is used in a home for showering, cooking, etc.
Colebrook-White
Colebrook-White's formula can be used to determine the friction coefficient (l) of a turbulent flow.
Compressor
A compressor is the heart of a cooling system. It increases the pressure of a gas by reducing its volume.
Compensator
A compensator can be built-into a heating system to absorb pipe linear expansion as an alternative to an expansion loop.
Condensate pump
A condensate pump is used to pump condensed water in cooling systems.
Condenser
A condenser is used in a cooling system. A condenser removes heat from cooling medium that flows through it.
Condensing boiler
A condensing boiler is provided with a condenser, by which the water vapour produced by the burning of gas or oil in the boiler, condenses back into liquid water - hence the name
Conductivity transmitter
Conductivity transmitters measure the electrical conductivity in a liquid.
Condensing temperature
The condensing temperature is the temperature at which a cooling medium changes phases from a gas to a liquid.