用材・燃料材区分を考慮した木質バイオマス燃料サプライチェーンの最適化モデル分析

The objective of this study is to build an optimization model expressing the supply chain of wooden fuels from thinning to users. The whole supply chain is optimized in terms of the total economic cost to control thinning, selling, transportation, drying, processing, storage, and supply to the demand side. The model incorporates selling thinned woods as a timber and selling co-generated electricity to the grid at the feed-in tariff for renewable energy. The results show that most of thinned woods with large diameter will be sold while the woods with smaller diameter will be used for the biomass fuel. Among various users, hospital will be selected to install wood-chip co-generation.