Monday August 26, 2019 from 13:40 to 15:00
Demand Side Management of a Commercial Refrigeration System with Cold Thermal Energy Storage
Gianluca Coccia1, Alessia Arteconi1,2, Paola D'Agaro3, Fabio Polonara1, Giovanni Cortella3.
1Università Politecnica delle Marche, Ancona, Italy; 2Università eCampus, Novedrate, Italy; 3Università di Udine, Udine, Italy
Accounting for about 17% of the overall electricity consumption worldwide, the refrigeration sector requires improvements in energy reduction and management strategies. A feasible solution lies in the adoption of demand side management (DSM), i.e. a modification of customers’ energy demand to improve the overall system energy efficiency.
In this work, a CO2 commercial refrigeration system coupled with a cold thermal energy storage (CTES) is studied through a DSM approach. Based on a demand response (DR) strategy, the CTES is used to change the timing of end-use consumption from high electricity cost periods to low-cost periods. During off-peak times, cold thermal energy can be generated by electricity, stored in the CTES and then used during peak-hours to flatten the utility load profile.
Results show that a similar application can lead to economic savings if the system takes advantage of the different electricity prices during peak and off-peak hours.