Influence of Storage Period on the Geochemical Evolution of a Compressed Energy Storage System
نویسندگان
چکیده
Subsurface porous aquifers are being considered for use as reservoirs compressed energy storage of renewable energy. In these systems, a gas is injected during times in which production exceeds demand and extracted generation periods peak or scarcity production. Current operational subsurface facilities salt caverns air the working gas. CO 2 potentially more favorable choice where under conditions has high compressibility can improve efficiency. However, interaction brine at boundary zone produce chemically active fluid result mineral dissolution precipitation reactions alter properties zone. This study seeks to understand geochemical implications utilization injection, extraction flow cycles. Here, reactive transport simulations developed based on 7 h 11 withdrawal 6 reservoir closure, corresponding schedule Pittsfield field test, 15 years life span assess evolution reservoir. The system compared continuously cyclic 12 injection extraction. show that reactivity occurs inlet domain. Furthermore, porosity inner domain preserved cycling acidified both systems.
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ژورنال
عنوان ژورنال: Frontiers in water
سال: 2021
ISSN: ['2624-9375']
DOI: https://doi.org/10.3389/frwa.2021.689404