Flexicool QP Series passive chilled beams (convection beam) has no supply air, but is based on the principle that circulating air is caused to flow down through the cooling coil by gravity flow natural convection circulation. The air flow through the chilled beam is determined by the temperature difference (actually the difference in density) inside and outside the beam in combination with the height of the beam.

It is possible to supply relatively large cooling effects, but since there is no means of controlling the supplied cold air, these beams are ideal for perimeter use and should not be positioned directly above workplaces.

		Passive Beams
	Function	QPSA	QPBA	QPDA
	Covered upper surface	-	-	-
	Open upper surface
	For use in false ceiling			-
	Freely suspended
	Heating loop option	-	-	-
	Lighting option	-	-