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TECHNICAL PAPERS

Thermal Energy Storage in Soils at Temperatures Reaching 90°C

[+] Author and Article Information
A. Gabrielsson, U. Bergdahl, L. Moritz

Swedish Geotechnical Institute SE-581 93 Linköping, Sweden

J. Sol. Energy Eng 122(1), 3-8 (Mar 01, 2000) (6 pages) doi:10.1115/1.556272 History: Received July 01, 1998; Revised March 01, 2000
Copyright © 2000 by ASME
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References

Lottner, V., and Hahne, H., 1997, “Status of Seasonal Thermal Energy Storage in Germany,” Proceedings of 7th International Conference on Thermal Energy Storage, Megastock ’97, Sapporo, Japan, 2 , pp. 931–936.
Lehtmets, M., 1992, “Design and Construction of a High Temperature Store in Clay,” Proceedings of Conference on Solar Energy at High Latitudes, North Sun ’92, Trondheim, Norway, I , pp. 392–397.
Lehtmets, M., 1995, “Parameter Study of Solar Heating Systems With Seasonal Ground Storage in Moraine,” Report 51, Swedish Geotechnical Institute, Linköping, Sweden.
Nordell, B., 1994, “Borehole Heat Store Design Optimization,” Doctoral thesis, 1994, 137 D, Division of Water Resources Engineering, Luleå University of Technology, Luleå, Sweden.
Dalenbäck, J.-O., 1990, “Central Solar Heating Plants with Seasonal Storage—Status Report,” IEA Solar Heating and Cooling Program, Task VII, Swedish Council for Building Research, Stockholm, Sweden.
Gabrielsson, A., 1997, “Solar Heating Systems with Seasonal Heat Stores—A Simulation and Cost Study,” SGI Report 52 (in Swedish), Swedish Geotechnical Institute, Linköping, Sweden.
Sundburg, J., 1991, “Thermal Properties in Soils and Rocks, Information 12,” Swedish Geotechnical Institute, Linköping, Sweden.
Larsson, R., 1982, “Properties of Soil, Information 1,” (in Swedish), Swedish Geotechnical Institute, Linköping, Sweden.
van Meurs, G. A. M., and Hoggendorn, C. J., 1983, “Influence of Natural Convection on the Heat Losses for Seasonal Heat Storage in the Soil,” Proceedings of International Conference on Subsurface Heat Storage in Theory and Practice, Stockholm, Sweden, Appendix Part I, pp. 475–480.
van Meurs, G. A. M., 1985, “Seasonal Heat Storage in the Soil,” Ph.D. thesis, Dept. of Applied Physics, University of Technology in Delft, The Netherlands.
Hellström, G., 1991, “Ground Heat Storage—Thermal Analyses of Duct Storage Systems/Theory,” Doctoral dissertation, Dept. of Mathematical Physics, Lund University of Technology, Lund, Sweden.
Hellström, G., 1989, “Heat Storage in the Ground, Duct Ground Heat Storage Model, Manual for Computer Code,” Dept. of Mathematical Physics, Lund University of Technology, Sweden.
Gabrielsson, A., Lehtmets, M., Moritz, L., and Bergdahl, U., 1997, Heat Storage in Soft Clay—Field Test with Heating and Freezing of the Soil, SGI Report 53, Swedish Geotechnical Institute, Linköping, Sweden.
Gehlin, S. and Nordell, B., 1997, “Thermal Response Test—Mobile Equipment for Determining the Thermal Resistance of Boreholes,” Proceedings of the 7th International Conference on Thermal Energy Storage, Megastock ’97, Sapporo, Japan, 2 , pp. 103–108.
Hellström, G., 1996, “Thermal Response Test for Clay Heat Stores in Linköping (SGI),” SGI Varia 377 (in Swedish), Swedish Geotechnical Institute, Linköping, Sweden.
Gehlin, S. and Eklöf, C., 1996, “More Reliable Thermal Data with Thermal Response Tests,” Journal “Borrsvängen” 3/96, pp. 14–15 (in Swedish), Geotec, Stockholm, Sweden.
Magnusson, C., et al., 1992, “Heat Store in Clay, Evaluation Söderköping,” R21, 1992 (in Swedish), Swedish Council for Building Research, Stockholm, Sweden.
Lundin, S.-E., Nordell, B., and Dalenbäck, J.-O., et al., 1998, “Solar Heating with Seasonal Storage in Boreholes in Rock and Low Temperature System for a Dwelling Area in Anneberg, Danderyd,” Feasibility study 1998-03-31 (in Swedish), Danderyds kommun Miljö och stadsbyggnad, Sweden.

Figures

Grahic Jump Location
Examples of ground heat exchangers with pipes in boreholes. (a) Open circulation system; (b)–(d) Closed circulation systems; (b) U-pipes in a water filled borehole; (c) U-pipes in a grout filled borehole; (d) A concentric pipe combined with a large number of small fluid channels close to the borehole wall 4.
Grahic Jump Location
Measured and calculated heat losses as a function of time for the SGI test field 13
Grahic Jump Location
Results of a thermal response test at a store temperature of 35°C at the SGI test field. Measured inlet and outlet temperatures together with calculated outlet temperature versus number of days since the beginning of the test.
Grahic Jump Location
Calculated and measured temperatures at various distances outside a test store at the SGI test field. After six temperature cycles the operation of the store was shut off.
Grahic Jump Location
Outline of settlements in a heat store in soft clay at cyclic temperature

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