Comparative study on renewal planning of alternative energy supply systems for a hospital

Shu Yoshida, Masahiro Inoue, Akira Okano, Koichi Ito, Yoshiharu Amano, Takumi Hashizume

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

    2 Citations (Scopus)

    Abstract

    In this paper, a method of rationally determining an optimal renewal plan is proposed for energy supply systems based on the optimization approach. In the planning of this proposed method, it becomes necessary to consider many factors such as the deterioration of each pieces of existing equipment, candidate pieces of equipment with upgraded efficiency reflecting technology improvement in the proper renewal year, the structure of renewal system, and so on. It is also necessary to determine the system's operational policy to match energy demands, which change daily and hourly through the year. A numerical study is carried out for a hospital with the total floor area of 25 000m2, where electrical (e.g., heat pump) and gas (e.g., gas engine cogeneration) systems are compared together with their combination of gas and electricity driven equipment (hybrid) system. Through this numerical study, the following results are obtained: a) Theoretically, the hybrid system is, of course, the best renewal system. However, the economic difference between the hybrid and the electrical systems is very small. b) The gas system is worse economically than the electrical one relatively due to the low energy efficiency of the related equipment, the high price of energy, and so on.

    Original languageEnglish
    Title of host publicationProceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011
    PublisherNis University
    Pages1372-1382
    Number of pages11
    ISBN (Print)9788660550165
    Publication statusPublished - 2011
    Event24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011 - Novi Sad
    Duration: 2011 Jul 42011 Jul 7

    Other

    Other24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011
    CityNovi Sad
    Period11/7/411/7/7

    Fingerprint

    alternative energy
    comparative study
    Planning
    Hybrid systems
    Gases
    gas
    Gas engines
    cogeneration
    energy efficiency
    Energy efficiency
    Deterioration
    electricity
    Electricity
    Pumps
    Economics
    energy supply
    planning
    hospital
    economics
    energy

    Keywords

    • Comparative study
    • Energy supply systems
    • Hospital
    • Optimization
    • Renewal planning

    ASJC Scopus subject areas

    • Environmental Science(all)
    • Energy(all)

    Cite this

    Yoshida, S., Inoue, M., Okano, A., Ito, K., Amano, Y., & Hashizume, T. (2011). Comparative study on renewal planning of alternative energy supply systems for a hospital. In Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011 (pp. 1372-1382). Nis University.

    Comparative study on renewal planning of alternative energy supply systems for a hospital. / Yoshida, Shu; Inoue, Masahiro; Okano, Akira; Ito, Koichi; Amano, Yoshiharu; Hashizume, Takumi.

    Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011. Nis University, 2011. p. 1372-1382.

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

    Yoshida, S, Inoue, M, Okano, A, Ito, K, Amano, Y & Hashizume, T 2011, Comparative study on renewal planning of alternative energy supply systems for a hospital. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011. Nis University, pp. 1372-1382, 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011, Novi Sad, 11/7/4.
    Yoshida S, Inoue M, Okano A, Ito K, Amano Y, Hashizume T. Comparative study on renewal planning of alternative energy supply systems for a hospital. In Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011. Nis University. 2011. p. 1372-1382
    Yoshida, Shu ; Inoue, Masahiro ; Okano, Akira ; Ito, Koichi ; Amano, Yoshiharu ; Hashizume, Takumi. / Comparative study on renewal planning of alternative energy supply systems for a hospital. Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011. Nis University, 2011. pp. 1372-1382
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