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

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

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.

元の言語English
ホスト出版物のタイトルProceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011
出版者Nis University
ページ1372-1382
ページ数11
ISBN(印刷物)9788660550165
出版物ステータスPublished - 2011 1 1
イベント24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011 - Novi Sad, Serbia
継続期間: 2011 7 42011 7 7

出版物シリーズ

名前Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011

Conference

Conference24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011
Serbia
Novi Sad
期間11/7/411/7/7

ASJC Scopus subject areas

  • Environmental Science(all)
  • Energy(all)

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  • これを引用

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