An Optimal Control Approach for an Overall Cryogenic Plant Under Pulsed Heat Loads | Zendy

Luis G. Palacín | Zendy; Benjamin Bradu | Zendy; Enrique Blanco Viñuela | Zendy; R. Maekawa | Zendy; M. Chalifour | Zendy

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An Optimal Control Approach for an Overall Cryogenic Plant Under Pulsed Heat Loads

Author(s) -

Luis G. Palacín,

Benjamin Bradu,

Enrique Blanco Viñuela,

R. Maekawa,

M. Chalifour

Publication year - 2015

Publication title -

physics procedia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.26

H-Index - 61

ISSN - 1875-3892

DOI - 10.1016/j.phpro.2015.06.177

Subject(s) - refrigerator car , refrigeration , computer science , optimal control , supercritical fluid , work (physics) , cooling capacity , power (physics) , nuclear engineering , process engineering , environmental science , control theory (sociology) , mechanical engineering , control (management) , thermodynamics , mathematical optimization , physics , mathematics , engineering , artificial intelligence

This work deals with the optimal management of a cryogenic plant composed by parallel refrigeration plants, which provide supercritical helium to pulsed heat loads. First, a data reconciliation approach is proposed to estimate precisely the refrigerator variables necessary to deduce the efficiency of each refrigerator. Second, taking into account these efficiencies, an optimal operation of the system is proposed and studied. Finally, while minimizing the power consumption of the refrigerators, the control system maintains stable operation of the cryoplant under pulsed heat loads. The management of the refrigerators is carried out by an upper control layer, which balances the relative production of cooling power in each refrigerator. In addition, this upper control layer deals with the mitigation of malfunctions and faults in the system. The proposed approach has been validated using a dynamic model of the cryoplant developed with EcosimPro software, based on first principles (mass and energy balances) and thermo-hydraulic equations

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