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Geothermal Energy

Science – Society – Technology

Fig. 5 | Geothermal Energy

Fig. 5

From: First field application of temperature sensor modules for groundwater flow detection near borehole heat exchanger

Fig. 5

Temperatures measured 70 m to 100 m below the surface before and during BHE operation. The dashed lines show the temperatures measured with the DTS method before BHE operation and with a temperature probe in a nearby well (without BHE). The black squares show the TSM temperatures before BHE operation. The solid lines show the temperatures measured by DTS during BHE operation

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