Annual heat load, energy consumption and COP of open refrigerated display cabinets (ORDC) driven byheat pump in supermarkets are assessed by means of a dedicated performance evaluation method. Thesystem modelling approach is firstly presented, and subsequently fitted to experimental data measured withinactual equipment working in a comprehensive range of operative conditions. The obtained characteristicequations for estimating the heat load of the ORDC and energy consumption of the condensing unit areemployed for a first screening of the results with reference to the effect of the display cabinet set temperature,refrigerant evaporating temperature and supermarket room temperature. Seasonal temperature distributionsof three representative locations are applied for the performance calculation of a selected arrangement of 5different models of ORDCs in a store. This methodology is integrated in a dedicated software, with a userfriendly interface, which is generally capable of predicting the annual performance of various combinationsof different ORDCs and can therefore be used for benchmarking and identifying energy conservationopportunities.
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