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Effects of regional groundwater flow on the performance of an aquifer thermal energy storage system under continuous operation

Title
Effects of regional groundwater flow on the performance of an aquifer thermal energy storage system under continuous operation
Author
이근상
Keywords
Thermal conditions; Aquifer thermal energy storage; Numerical modeling; Groundwater flow; Continuous operation; NUMERICAL-SIMULATION; CONFINED AQUIFER; HEATED WATER; MODEL
Issue Date
2014-01
Publisher
SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Citation
HYDROGEOLOGY JOURNAL , Vol. 22, No. 1, pp. 251?262
Abstract
Numerical investigations and a thermohydraulic evaluation are presented for two-well models of an aquifer thermal energy storage (ATES) system operating under a continuous flow regime. A three-dimensional numerical model for groundwater flow and heat transport is used to analyze the thermal energy storage in the aquifer. This study emphasizes the influence of regional groundwater flow on the heat transfer and storage of the system under various operation scenarios. For different parameters of the system, performances were compared in terms of the temperature of recovered water and the temperature field in the aquifer. The calculated temperature at the producing well varies within a certain range throughout the year, reflecting the seasonal (quarterly) temperature variation of the injected water. The pressure gradient across the system, which determines the direction and velocity of regional groundwater flow, has a substantial influence on the convective heat transport and performance of aquifer thermal storage. Injection/production rate and geometrical size of the aquifer used in the model also impact the predicted temperature distribution at each stage and the recovery water temperature. The hydrogeological-thermal simulation is shown to play an integral part in the prediction of performance of processes as complicated as those in ATES systems.
URI
http://link.springer.com/content/pdf/10.1007%2Fs10040-013-1052-6.pdfhttp://hdl.handle.net/20.500.11754/46975
ISSN
1431-2174; 1435-0157
DOI
10.1007/s10040-013-1052-6
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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