Cost optimisation of supermarket refrigeration system with hybrid model
Authored by Miha Glavan, Dejan Gradisar, Serena Invitto, Iztok Humar, Dani Juricic, Cesare Pianese, Damir Vrancic
Date Published: 2016
DOI: 10.1016/j.applthermaleng.2016.03.177
Sponsors:
Slovenian Research Agency
Platforms:
AnyLogic
Model Documentation:
Other Narrative
Mathematical description
Model Code URLs:
Model code not found
Abstract
Refrigeration systems based on vapour compression cycle are one of the
largest energy consumers in supermarkets. In this paper a hybrid model
of a refrigeration system is developed, in order to estimate the
benefits of energy optimisation measures. The refrigeration model
comprises the refrigerated display case dynamics, food products
dynamics, evaporation model, and ice formation model, and is further
extended with the discrete events that are typical for normal operation
of a refrigeration system (i.e. customer interactions, product
refilling, defrosting). Model parameters are identified from the
measured data, equipment specifications and estimations of some
conditions in a supermarket case study. The simulation software AnyLogic
is used to. realise an agent-based model of the display case that allows
us to extend the model to the entire store-wide refrigeration system.
The analysis demonstrates the use of the model for system optimisation
purposes. The defrosting schedule of a single display case as well as
for the complete store is optimised considering the overall running
costs, food quality, and maximum peak power. Moreover, several energy
optimisation measures are compared and evaluated in terms of their
contribution to the overall savings and food quality degradation. (C)
2016 Elsevier Ltd. All rights reserved.
Tags
Simulation
Performance
Demand-side management
Consumption