draught risk rating
[EN 12792-2003, 115]:percentage of people predicted to be dissatisfied due to draught.
Continue reading →main-glossary
drop (of an air jet in mixing air diffusion)
[EN 12792-2003, 116]:vertical distance (hv) between the lowest horizontal plane tangent to a specified isovel and the centre of the core of an air jet
Continue reading →dry bulb temperature
(See temperature, dry bulb))
Continue reading →dry motor pump
[EN 14511-1:2022, 3.13]:pump with a motor which is cooled by the ambient air.
Continue reading →dual duct unit
[EN 12792-2003, 117]:air terminal unit assembly having two ducted air inlets and means of automatically adjusting the predetermined ratio of mixing of two air flows at different conditions and for regulating the air flow rate to the required value.
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