地下帯水層蓄熱法を併用した雪国のコジェネレーション

概要

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A combination of a cogeneration system and an aquifer thermal energy strage method, known as Co-Gene ATES, has been investigated numerically, based on the performance of fundamental elements of the system as obtained experimentally in previous investigations in a heavy-snow fall zone. The results obtained were as follows : 1. The yearly total coefficient of performance of Co-Gene ATES was estimated at 3.04, and the energy cost was a quarter of that of a conventional system. 2. In a comparison of Co-Gene ATES with conventional equipment, a financial break-even point of 6.3 years was estimated from an economic feasibility study, taking the recovery factor in the charge well as 60% and the increase in fuel cost as 1%, which in turn led to an increase in the cost of electricity of 3%. 3. We proposed a method that estimate the optimum condition of system by the life gain. When the lifetime of Co-Gene ATES is 15 years, the optimum condition is that the proportion of snowmelt road are is 100%, and that of snowmelt roof is 0% were financial break-even point 3.3 years and a life gain of 9 hundred million yen were estimated.
一般社団法人日本機械学会の論文
1989-12-25