Environmentally Friendly Retail Outlet

The Subway at the Beehive centre in Cambridge was designated by the management as a test site to trial the provision of the most environmentally friendly retail site possible. The brief was to create as near as is possible a carbon neutral outlet employing the latest technologies.

EcoCooling were invited to look at the cooling of the unit. After careful analysis of the existing environment taking into account, heat generated, airflow and the comfort of both staff and customers, a complete air handling system was designed to provide both heating and cooling.

Subway stores bake bread three to four times each day so the EcoCooling system was designed to capture the surplus heat generated by both the ovens and the walk in fridges to provide heating for the whole shop and not just specific hot spots. This was done by redirecting the hot air into the shop to provide heating in the winter months. Evaporative cooling is then used to cool the store during the summer when the hot air from the ovens is extracted outside the building.

The temperature is maintained within the unit by thermostats. A bespoke control system provides a fresh environment at all times by continually circulating air. This also eliminates any condensation issues and prevents the formation of hot spots which previously caused uncomfortable conditions when the ovens were in use.

The Cambridge franchisee installed power usage monitors at both this site and a similar site. The Beehive site is now using 75% less power than the equivalent site and is being held up as a flag ship example of green technology for the whole of the Subway chain.

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EcoCooling is Europe’s leading manufacturer and distributor of evaporative coolers. Evaporative coolers provide cool fresh air by using the process of evaporation to cool the air as an alternative to using refrigeration. EcoCooling has...
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