G080014 ビル用エネルギー供給システムの最適更新計画における各種代替システムの経済性評価([G08001]動カエネルギーシステム部門一般セッション(1):動力エネルギーシステムの高度化1)

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  • G080014 Comparative Study on Renewal Planning of Alternative Energy Supply Systems for a Building from Economic Viewpoint

抄録

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 theircombination 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.

収録刊行物

  • 年次大会

    年次大会 2011 (0), _G080014-1-_G080014-5, 2011

    一般社団法人 日本機械学会

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