The Machine Mart tool store in Derby, UK, is typical of many highly glazed town centre buildings. This South facing building generates so much solar gain the internal temperatures can reach 40°C.
Machine Mart were seeking a solution with the main objective of cooling the cashier area whilst taking advantage of some existing extraction built into the glazed area.
A single down discharge EcoCooler was installed on the insulated metal clad roof.
A ‘soaker sheet’ is fitted running from the apex of the roof to the cooler upstand. This provides a high level of weather proofing.
A 240V/15A single phase and a ½" mains water supply are fed from the roof space to the cooler. The cooler discharges waste water onto the roof.
Air is transported in the false ceiling space using round section spiral wound ductwork. This duct design allows the cooler to be positioned in the optimum place and the cooled air to be discharged exactly where it is required.
Provided the ductwork is correctly sized very little flow is lost and there is the added benefit of noise reduction as the distance from the fan to the discharge point is increased. Bends also contribute to noise reduction.
An eight-way plenum chamber discharges the air into the retail space. The grills can be set to provide a direct flow of air into the area or draft free displacement ventilation. Air is extracted using a series of wall fans.
Simple controls gives the five fan speeds with the option of evaporative cooling or straight ventilation for cooler conditions.