| Abstract: | A study of the feasibility of storing heated water in a deep sandstone aquifer in Minnesota is described. The aquifer consists of four hydraulic zones that are areally anisotropic and have average hydraulic conductivities that range from 0. 03 to 1. 2 meters per day. A preliminary axially symmetric, nonisothermal, isotropic, single-phase, radial-flow, thermal-energy-transport model was constructed to investigate the sensitivity of model simulation to various hydraulic and thermal properties of the aquifer. A three-dimensional flow and thermal-energy transport model was constructed to incorporate the areal anisotropy of the aquifer. Analytical solutions of equations describing areally anisotropic groundwater flow around a doublet-well system were used to specify model boundary conditions for simulation of heat injection. The entire heat-injection-testing period of approximately 400 days was simulated. Model-computed temperatures compared favorably with field-recorded temperatures, with differences of no more than plus or minus 8 degree C. For each test cycle, model-computed aquifer thermal efficiency, defined as total heat withdrawn divided by total heat injected, was within plus or minus 2% of the field-calculated values. |
| Genre: | Conference Paper |
| ProdID: | 70014693 |
| Citation Author: | Miller, R. T. |
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| Citation End Page: | 685 |
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| Citation Language: | English |
| Citation Larger Work Title: | Proceedings of the Intersociety Energy Conversion Engineering Conference |
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| Citation Number Of Pages: | 4 |
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| Citation Publisher: | ACS |
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| Citation Search Results Text: | THERMAL-ENERGY STORAGE IN A DEEP SANDSTONE AQUIFER IN MINNESOTA: FIELD OBSERVATIONS AND THERMAL ENERGY-TRANSPORT MODELING.; 1986; Conference Paper; Proceedings of the Intersociety Energy Conversion Engineering Conference; Miller, R. T. |
| Citation Start Page: | 682 |
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| Citation Year: | 1986 |
| Type: | citation/reference |
| Text: | THERMAL-ENERGY STORAGE IN A DEEP SANDSTONE AQUIFER IN MINNESOTA: FIELD OBSERVATIONS AND THERMAL ENERGY-TRANSPORT MODELING.; 1986; Conference Paper; Proceedings of the Intersociety Energy Conversion Engineering Conference; Miller, R. T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1986 00:00 -0600 |
| Publisher: | ACS |
