Abstract
Integrated energy systems for supermarkets are becoming popular for the shop owners due to significant energy and cost savings. Integrated system means: the centralized refrigeration unit delivers the entire freezing, cooling and Air Conditioning demand of the Supermarket. Only the natural working fluid CO2 is applied within the units. Within the EU funded project MultiPACK, a series of demonstration supermarkets are developed and monitored across Southern Europe (Portugal and Italy). The energy performance of the MultiPACK unit in Portugal is compared to comparable shop in the region. The MultiPACK system configuration is explained as well as the baseline configuration, i.e. the reference shop. The first-year operation indicates a 30% reduction in energy demand for the Portuguese shop with the MultiPACK unit when comparing with a shop containing a baseline standard cascade configuration (CO2 & HFC134a). © 2020 International Institute of Refrigeration. All rights reserved.