Air Design has designed, manufactured and supplied eight bespoke AHUs for Holywell Primary School in Hertfordshire. The AHU is fitted with double, high efficiency, plate heat exchangers through which the heat generated by the classroom radiators is transferred between the separate supply and exhaust air. Recovery of heat from the exhaust air and the efficient transfer to the supply fresh air offers significant energy savings, contributing significantly to the school’s energy efficiency and the reduction of its carbon emissions. The units connect to the ductwork ventilation system that distributes the conditioned air through the school and returns it to the AHU.
The approach to construction within education is very environmentally aware and this fits well Air Design’s own philosophy of maximising the energy efficiency of AHUs to contribute to the whole process of reducing carbon emissions. At Holywell the units have been designed with temperature and CO² sensors and controls that make the ventilation of the building compliant with Building Control Bulletin 101.