## 抄録

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 25000m^{2}, and many comprehensive and useful results are obtained by comparing 13 alternative renewal plans by using the CPLEX solver.

本文言語 | English |
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ホスト出版物のタイトル | ECOS 2015 - 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems |

出版社 | International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems |

ISBN（電子版） | 9782955553909 |

出版ステータス | Published - 2015 |

イベント | 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 - Pau, France 継続期間: 2015 6月 29 → 2015 7月 3 |

### Other

Other | 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 |
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国/地域 | France |

City | Pau |

Period | 15/6/29 → 15/7/3 |

## ASJC Scopus subject areas

- 工学（全般）
- 環境科学（全般）
- エネルギー（全般）