バイオマス資源とエネルギー需要分布を考慮した中山間地域熱供給システムの設計

摘要

北欧を中心として，海外では木質バイオマスを利用した地域熱供給の先進的な事例がある.国内にも豊富な木質資源を持つ地域が存在するが，このような地域は，資源調達の容易さを利点として持つー方で,エネルギー需要の分散に起因する導管熱損失の増大という欠点を併せ持つ.このトレードオフの関係性について議論するためには，資源調達から，エネルギー供給までをシステムとして捉えた，包括的なシステム分析が必要である.%In recent years, municipalities have started to develop their own energy plan. Therefore, a quantitative evaluation approach considering energy demand distribution is of benefit. In foreign countries, energy maps which visualize the demand distribution, have been used to make an effective decision regarding energy planning. Over the past few years, several studies have analyzed using energy maps, but this approach has not yet been conducted on rural areas which are rich in energy resources. This paper presents the method for making energy map for rural town and applying energy map for designing a biomass district heating system considering pipe network heat loss and pumping power demand based on heat demand distribution. The case study was done for Mogami-cho, Japan. The results indicate that the case of DHS connected with both high demand commercial buildings and single detached houses is economically competitive with the case of DHS only connected with high demand commercial buildings.