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Subproject 2

Further development of the emulated borehole heat exchanger (E-BHE) to check TRT devices

Lead Management
ZAE Bayern / Fraunhofer ISE
Subproject Leader
Dipl.-Ing. Hanne Karrer (
M.Sc. Dipl.-Ing. (FH) Peter Osgyan (
Participating Partners
ZAE Bayern
Fraunhofer ISE
H.S.W. GmbH

In order to be able to certify thermal response test (TRT) devices, the limits and capabilities of the TRT test rig developed in the previous project QEWS II, which emulates a real borehole heat exchanger (E-BHE), must be determined. This includes dealing with possible disturbances to which the TRT device is exposed in reality, such as electrical grid fluctuations, power interruptions, heating failures, changes in volume flow or also environmental influences due ot a poor test setup. Furthermore, the variation possibilities concerning the virtual borehole length and the thermal conductivity of the ground need to be extended.
Project Partners
Funding Authority