排気再燃ボイラを用いた熱電独立可変ガスエンジンシステムによる省エネルギー(省エネルギー・小型分散電源・コジェネ技術,<特集>第13回動力・エネルギー技術シンポジウム)

抄録

This system consists of a 1MW class gas engine of which generating efficiency is 42.5% LHV, that is the best level of this class in the world, and HRSG (Heat Recover Steam Generator) with reburning system to expand heat/power ratio. The total thermal efficiency of this system is 10-20 points higher than that of conventional variable heat and power gas turbine systems or current gas engine systems in combination with independent package boiler in a range of heat/power ratio of 0.5-1.5. In this paper, features of this gas engine system which is eco-friendly and has high electrical efficiency and moderate steam output, and the energy saving effect of this system based on a field test result in some mining factory for two years are described.