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- Title
Oberflächennahe Geothermiesondenanlagen im Betrieb.
- Authors
Wagner, Isabel M.
- Abstract
Abstract: Borehole heat exchangers in operation Small shallow borehole heat exchanger (BHE) systems (< 30 kW) are used very frequently for residential houses. Nevertheless there is a lack in information about the operation, the reliability as well as the satisfaction of the owners. A survey was carried out in the cities of Wiesbaden, Darmstadt, Düsseldorf and Frankfurt am Main which shows high satisfaction with the operation of the small geothermal systems as well as a great number of borehole heat exchanger systems that are used additionally for cooling. Geothermal systems generate thermal plumes depending on the groundwater velocity and direction which can cause thermal interaction of neighbored systems. Therefore minimal distances to the border need to be kept. Based on the results of the survey it is investigated how the thermal plume depends on the operation mode of the system, especially the alternating operation with cooling during the summer. An alternating operation can reduce the thermal plume and thereby the thermal interaction which is relevant for the needed border distances.
- Publication
Bautechnik, 2018, Vol 95, Issue 10, p756
- ISSN
0932-8351
- Publication type
Article
- DOI
10.1002/bate.201700044