Natural ventilation is key to energy efficiency for Co-op

Advanced Air, natural ventilation
Specially designed dampers and louvres from Advanced Air provide buoyancy-driven natural ventilation for this Co-operative superstore.

Contributing to the energy efficiency of the Midlands Co-operative superstore at Oakham, Rutland, is the provision of natural ventilation through special dampers and louvres supplied by Advanced Air The system comprises modulating intake dampers at low level with high-level discharge through a large area of outlet dampers and louvres running the length of the building on both sides.

The aerodynamic characteristics of this arrangement were critical since the ventilation requirements are driven by the buoyancy of the air as the internal temperature increases. Any additional benefit from the wind effect was a bonus over and above the design parameters.

To achieve a low resistance to airflow, the dampers have extruded aluminium aerofoil sectioned blades. Low leakage for the dampers was achieved with silicon seals for the blade tips and stainless-steel side/blade edge seals. The dampers comply with Class 4 EN1751 with a leakage of 3.8 l/s/m2 at 500 Pa.

Bolting the blades onto horizontal shafts gave the rigidity needed to enable these dampers to be supplied in single sections of 1800 x 1200 mm.

Derek Walker, associate director of EDP Consulting explains, ‘We needed a damper and louvre system that could be easily installed into the cladding and, more importantly, had low pressure loss and low leakage characteristics.’

Other features of the building include heat recovery, daylighting, free cooling, solar water heating and a rainwater harvesting system.

Mechanical-services contractor was William Bailey Ltd,

For more information on this story, click here: December 10, 137
Related links:
Related articles:

modbs tv logo

R&D spending in construction sector rose 7.9% last year, despite the pandemic

Construction sector R&D spending hit £368m last year, according to latest ONS data

Heat pump market represents a colossal opportunity, says BESA

BESA’s head of technical Graeme Fox said the heat pump market represented “an absolutely colossal opportunity” for suitably qualified engineers but warned that the industry would have “to rapidly scale up capacity and needed considerable investment in additional skills to deliver all these hugely ambitious targets”.