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Aluminium
Pure aluminium is a light, soft metal with a density of about a third of that of steel. Pure aluminium has a high electrical and thermal conductivity.
Ambient condition
“Ambient conditions” is a set of parameters used by designers for dimensioning ventilation and cooling systems. Ambient conditions typically include temperature, humidity and air pressure.
Anaerobic
Anaerobic conditions under wastewater transport and treatment imply that neither nitrate, sulphate nor oxygen are present for the decomposition of organic matter.
Anoxic
Anoxic conditions, as for anaerobic conditions, indicate the absence of pure oxygen. However, compounds such as nitrate or sulphate can be present under anoxic conditions.
ATEX
ATEX is an abbreviation of a French term used to denote an explosive atmosphere.
Axial fan
An axial fan is a type of fan where both motor and wings are mounted directly on the axle. When the axle and the wings rotate, it results in a current parallel with the axle.