1317 蒸気噴射・吸気冷却ガスタービンコージェネレーションシステムの最適運用

概要

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The operational strategy for cost saving is investigated for an existing gas turbine cogeneration plant with steam injection and inlet air cooling whose operation is difficult to be determined because of its high flexibility. An optimization approach is adopted to acquire the knowledge for the rational operational strategy. The on/off and rated/part load status for each piece of equipment, the amount of injected steam, and the on/off status for inlet air cooling are determined so as to minimize the hourly operational cost subject to the performance characteristics of equipment and energy balance relationships. This optimization problem is solved for various combinations of power and steam demands under various ambient air conditions. The operational strategy such as the on/off status of the cogeneration units, auxiliary boilers and the inlet air cooling as well as the steam injection is illustrated by operational maps, which clarify the conditions for the effective use of steam injection and inlet air cooling.
社団法人日本機械学会の論文