SUPERMARKET REFRIGERATION
Over recent years, the market share of the so called ‘big four’ has been falling, being picked up by discount retailers Aldi and Lidl or convenience store chains like Co-op.
In 2016, the UK grocery market was estimated to be worth almost £180bn, of which around 57% was attributed to larger stores (hypermarkets and supermarkets).
Larger stores now take less of the market share than they used to, an estimated drop totalling 75% over the past fi ve years, indicating a change in grocery shoppers’ habits from scheduled big shopping trips to unscheduled convenience trips and growth in online shopping.
UK retailers consume energy in three main areas – stores, distribution centres, and transportation. Physical retail outlets account for the most signifi cant element of total energy consumption.
Energy use by stores varies according to size, product mix, type of HVACR equipment and lighting used. Usage ranges from 700kWh/m2 in larger stores to over 2000kWh/m2
in some
smaller convenience stores due to their higher ratio of refrigerated space to total sales area. By far the biggest power draw in many food stores is refrigeration, accounting for between
30% and 60% of consumption. In contrast, lighting accounts for between 15% and 25%. The remainder can be attributed to heating, ventilation, air conditioning and cooking facilities. With energy costs rising, margins under pressure and the increase of the green consumer, it is not surprising that retailers are now seeking to take further control of their energy use.
Taking control of energy use The Carbon Trust identifi es fi ve key areas for attention by retailers wishing to take control of energy use: Energy Management, Refrigeration, HVAC, Lighting and Building Fabric. Building controls, coupled with energy and facilities management technology from companies such as RDM put retailers back in control of the key areas of energy use. Pinpointing where energy is being used, enabling users to manage it without impacting food quality or reducing customer and staff comfort. It is widely recognised, that the use of such systems can improve food quality and enhance comfort in stores, while simultaneously cutting energy costs signifi cantly.
Since 2001 RDM have been working closely with a major UK retailer to become a major
partner in the delivery of an ambitious sustainability program. Through the adoption of innovative approaches, including the installation of the refrigeration controller with IP built-in, RDM has helped them achieve year-on-year energy savings. The retailer, who has the ultimate goal of becoming the world’s most sustainable retailer, became carbon neutral in 2012. One initiative used RDM control systems to optimise suction pressure on refrigeration packs operating in store across the UK wide estate. As a result, the retailer has made annual savings of 4%-5% on refrigeration packs alone, equating to over 1000 tonnes of CO2
equivalent.
Remote software updates deployed by RDM, coupled with the re-commissioning of refrigeration plant across the whole estate, allowed the retailer to more closely align the performance of the refrigeration system to actual demand. Improving effi ciency, without sacrifi cing the performance of the store systems. Furthermore, monitoring tools, also provided by RDM were used to identify sites and specifi c systems that were underperforming. Bespoke reports were used by contractors to optimise equipment on the next visit to that particular store or site.
Daikin Applied
www.acr-news.com
October 2017 27
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