Quality Control of Borehole Heat Exchanger Systems
نویسندگان
چکیده
The vast growing market for borehole heat exchangers (BHE’s) requires great efforts of quality assurance in design and construction. Within a research project funded by the German Federal Ministry of Economics and Technology a consortium consisting of the University of Applied Sciences at Biberach (UASB), the University of Karlsruhe (EIFER, GI) and the Bavarian Centre of Applied Energy Research (ZAE Bayern) is investigating subjects related to quality management of BHE’s. For proper design of BHE’s reliable data on thermal properties of the underground determined by the Thermal Response Test are essential. New measurement techniques and improved evaluation models are developed. The design tool GEOSYST developed by (UASB) which considers the whole system, the building as well as the ground source in one step will be enhanced further and validated. Borehole grouting is an important issue from the environmental point of view. The sealing properties of different grouting materials are investigated under realistic operating conditions.
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