期刊
GRUNDWASSER
卷 15, 期 2, 页码 123-133出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00767-009-0125-x
关键词
Ground source heat pumps (GSHP); Borehole heat exchanger (BHE); Cold plumes; Analytical solutions; Geothermal energy
Shallow geothermal energy installations, especially ground source heat pump (GSHP) systems are increasingly being used for air conditioning and temperature control in buildings. Heating applications, for example, result in cold temperature anomalies (cold plumes) in the subsurface. To avoid interactions between adjacent cold plumes, authorities recommend minimum distances of about 10 m between installations. The length of these plumes can be simulated analytically and numerically. The presented analytical solutions are valid for steady-state conditions and consider conduction, convection and dispersion. The results show that the length depends on different parameters, especially flow velocity. The plumes in gravel aquifers become temporarily longer than in less permeable aquifers. Even under average energy extraction rates, they can exceed 10 m in length after one heating period. In the presented example the plume has a length of 10 m after 100 days under a continuous energy extraction rate of 55 W m(-1). However, these plumes can regenerate quickly. Finally, the analytical results are discussed in a legal context.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据