A multi-stage renewal planning of an energy supply system for a hospital based on the mathematical optimization method

Shu Yoshida, Koich Ito, Akira Yoshida, Yoshiharu Amano

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The multi-stage renewal planning problem is studied here for an energy supply system installed into a hospital from the long- Term economic viewpoint by applying the mathematical optimization method. This problem is mathematically formulated as a large-scale mixed-integer linear programming one, and the average annual total cost during the evaluation period is set as the objective function to be minimized. In this problem, by taking the deterioration of performance efficiency of the existing pieces of equipment, the renewal system is assumed to be composed by installing new pieces of equipment with improved efficiency by reflecting technical progress. By optimizing the system's operational policy for hourly and seasonally changing energy demands through years of the evaluation period, the renewal years and the system's configurations at each multi-stages are determined optimally. A numerical study is carried out for a really existing hospital with total floor area of 25000m2, and many comprehensive and useful results are obtained by comparing 13 alternative renewal plans by using the CPLEX solver.

    Original languageEnglish
    Title of host publicationECOS 2015 - 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
    PublisherInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
    ISBN (Electronic)9782955553909
    Publication statusPublished - 2015
    Event28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 - Pau, France
    Duration: 2015 Jun 292015 Jul 3

    Other

    Other28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015
    CountryFrance
    CityPau
    Period15/6/2915/7/3

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    Keywords

    • Economy
    • Energy supply system
    • Hospital
    • Multi-stage optimization
    • Renewal planning

    ASJC Scopus subject areas

    • Engineering(all)
    • Environmental Science(all)
    • Energy(all)

    Cite this

    Yoshida, S., Ito, K., Yoshida, A., & Amano, Y. (2015). A multi-stage renewal planning of an energy supply system for a hospital based on the mathematical optimization method. In ECOS 2015 - 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems.