Ice-cream storage energy efficiency with model predictive control of a refrigeration system coupled to a PCM tank | Efficacité énergétique de l'entreposage de crème glacée avec régulation par modèle prévisionnel d'un système frigorifique couplé à un réservoir de PCM
2015
Schalbart, P. | Leducq, Denis | Alvarez, G. | Génie des procédés frigorifiques (UR GPAN) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]SPEE
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Mostrar más [+] Menos [-]Inglés. A model predictive controller (MPC) was developed in order to optimise energy management of an ice-cream warehouse refrigeration system coupled to a phase-change material (PCM) tank. The controller's internal model was based on a steady-state refrigeration cycle model and energy balances on the PCM tank and warehouse. Considering crystal growth in ice-cream, the quality evolution was based on Ostwald ripening equation. The product temperature field was determined by a 1-D finite difference equation. An original PCM model was developed for better performance of Levenberg–Marquardt's optimisation algorithm which was modified in ordepreviso*r to take into account control variables' bounds. Simulation of the ice-cream storage for a period of 90 days lead to good results on the optimised control sequence with efficient energy management thanks to the PCM tank. Ice crystals size remained below the defined target: 26 microm. This study showed the great potential of MPC to reduce energy consumption and guarantee food quality.
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