Refrigeration manufacturer Adande has published further independent scientific evidence confirming that its patented Aircell air flow management system delivers significant energy savings and tighter operating temperatures compared with conventional refrigerated cases.
Adande commissioned Refrigeration Developments & Testing Ltd (RD&T) to conduct tests comparing the performance of a 2500mm open front remote multi deck cabinet, commercially available within the UK, with an identical model modified with the Aircell system, which is designed for open front multi deck refrigerated retail display cabinets.
The tests were carried out under BS EN ISO 23953, which is the accepted industry standard for the testing of refrigerated display cases, with both cabinets loaded in accordance with the test standard. The two cabinets under test were run at an operating temperature of M2 (-1 to 7o C) at an ambient climate class 3 (25o C and 60% relative humidity).
After stable state running for 24 hours, the energy usage of each case was monitored over a further 24 hour cycle. Results for the baseline cabinet showed a refrigeration electrical energy consumption (REC) of 57.61 kWh/24h, compared with a REC of 27.41 kWh/24h for the cabinet modified with Aircell, representing an energy saving of over 50%.
The tests also monitored the temperature of Tylose ‘m’ packs loaded within the cabinets. The temperature of ‘m’ packs in the baseline cabinet varied by 7.7o C, whilst the temperature of the packs in Aircell cabinet was within a band of just 3.2o C, demonstrating much tighter temperature control.
The RD&T data bears out previous independent tests carried out by ECH Engineering Ltd, which established a REC of 48.00 kWh/24h for the baseline cabinet, compared with a REC of 29.72 kWh/24h for the Aircell model. In terms of operating temperature variation, ECH Engineering measured a range of pack temperatures of 9.5o C in the baseline cabinet and a band of 3.1o C in the Aircell cabinet.
Adande claims the results of the tests will be welcomed by retailers seeking to reduce their energy consumption under the terms of the Carbon Reduction Commitment Energy Saving Scheme.
The findings may also appeal to refrigeration equipment manufacturers, who will need to address energy saving issues to comply with the Eco-Design directive and forthcoming energy labelling regulations, for refrigerated retail display cabinets.
The fact that the Aircell cabinet achieves improved temperature stability also has positive implications for maintaining fresh food quality and appearance, reducing the amount of food, which may be price discounted or thrown away due to product deterioration.
Ian Wood, managing director at Adande, said: “We believe that the results for the cabinet incorporating Aircell demonstrate the lowest energy consumption figures and the tightest temperature control seen on an open front refrigerated multi deck cabinet of this type.”