Breathing Buildings Ltd has installed a system of mixing
ventilation units in the two storey classroom block at the QAC
campus in Birmingham. In this installation, classrooms on both the
ground and the first floors exchange air with the outside through
stacks which penetrate the roof of the building. In winter, the
system operates using the mixing ventilation strategy of the
e-stack units, while in summer, the system control changes to
operate using upward displacement ventilation.
Monitoring of the site since occupation suggests
that the e-stack control system maintains very comfortable internal
air temperatures and that the CO2 levels remain low,
confirming the effectiveness of the ventilation system.