Development of Riverbank Filtration Water Supply System for a Heat Source/Sink of Heat Pumps |
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학술지명 International Symposium on Low Carbon & Renewable Energy Technology
저자 이송이,조용,이남영,김형수,문종필
발표일 2010-11-17
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We have developed a riverbank filtration wells to supply a heat source/sink of water in the alluvial aquifer to geothermal heat pumps for heating and cooling of a green house. The research site in Jinju was chosen as a good site for riverbank filtration water supply among four preliminary sites by the surface geological survey, electrical resistivity soundings, and borehole surveys. In the results of two boreholes drilling at Jinju site, it was revealed that the groundwater table is about 3 m under the ground, and that the sandy gravel aquifer layer in the thickness of 6.5 m and 3.5 m occurs at 5 m and 7 m in depth below the ground level respectively (Fig. 1). Hydrogeological simulations have been carried out for two preliminary cases of pumping and recharge well positions, and it is found that the distance between pumping and recharge wells should be longer to prevent the recharge water from affecting the pumped water which might be used as heat source or sink. Consequently, the improved case that the distance between pumping and recharge wells is at least 70 m has been selected with a quarter of recharged flow rate (Fig. 2). It is predicted that the transfer term, the recharge water affects the pumping well, is over 6 months of heating season. |