The Southern Co-operative (TSC) has achieved CO2 equivalent savings of over 69 tonnes and more than halved power usage at its new community food store at Chobham in Surrey with the help of refrigeration specialist, DCI Refrigeration & Electrical.
DCI said it has designed and installed innovative refrigeration, climate control and energy management systems for the project. Working alongside a sustainable timber-frame construction, insulation exceeding Building Regulations and renewable energy sources, DCI said its systems play a vital role in making the 2,500sq ft building the retailer’s flagship eco store and its most economical to run.
Glass doors have been added to chiller cabinets providing an energy saving of over 30% and reducing CO2 equivalent emissions by 10.5 tonnes; as well as eliminating the need for heating of the cold aisle, which saves a further 8.9 tonnes, said DCI.
Overall store heating comes via a DCI designed heat recovery system, using heat generated by the refrigeration plant to provide hot water for radiators and sink usage. This is backed up by an energy efficient air to water heat pump.
Store ventilation via heat exchange either pre-heats or cools fresh air with extracted air to save further energy; while LED lighting, which uses 75% less electricity than conventional fluorescents and DCI’s Energy Management Panel contribute around a further 24 tonnes of CO2 equivalent savings, the company said.
DCI’s Energy Management Panel, deployed in other TSC stores, controls operational periods for store lighting, signage, bakery ovens, heating, ventilation and non-perishable refrigerated display cabinets; ensuring these systems use energy only when needed and saving 20 tonnes of CO2.
Use of CO2 as the prime refrigerant in the 52kW glycol chiller, designed and manufactured at DCI premises in Portsmouth, provides the established GWP (Global Warming Potential) benefits of using natural refrigerants to reduce direct emissions and contributes to the overall carbon savings; together with TSC’s use of renewable energy sources – both on site and via incoming supply from hydro electric and wind power providers.
Claimed to be a first for any retailer, the store features a 100% recycled and sustainably sourced timber-based refrigeration plant room, which was developed by working closely with designers Box Clever to be sympathetic to the overall building construction.
The Southern Co-operative’s development manager, Gary Taylor, said: “DCI has played an invaluable role in helping us realise the full potential of this eco store. Rather than offsetting our emissions by buying carbon credits, we’re addressing energy issues within our business. The total reduction in carbon usage every year here will be roughly the equivalent of driving your car around the earth eight times or taking a bus all the way to the moon and back.”