Germany: a new heat pump system using propane for supermarkets

The discount retailer Aldi and the refrigeration company Viessmann presented a joint energy program at the EuroShop exhibition that took place in March 2017 in Düsseldorf. This program consists in a sustainable energy system called ESyCool Green employing propane heat pumps in combination with optimized cooling cabinets and cells, as well as an integrated ice energy storage unit and a photovoltaic system.

The biggest saving potential comes purely from the in-store refrigeration technology, which contributes to around 50% of the whole energy consumption. Viessmann had already fitted the ESyCool system on behalf of Aldi Nord in a newly-built store back in late 2015, in Germany. A 12-month test was conducted and the energy efficiency of the installation passed successfully. It is believed that self-generated electricity from the photovoltaic systems will supply the cooling points in the market via a cooling circuit.

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