Measurements and Design Calculations for a Deep Coaxial Borehole Heat Exchanger in Aachen, Germany

Figure 6

Petrophysical core data (right) and on the left borehole log data (left) for the RWTH-1 borehole; (i) on the right, dots indicate the core measurements and the black lines are sliding window average of the core measurements; (ii) on the left, the black lines are borehole logs and the blue line shows the sliding window average of the core measurements. Colors indicate rock type according to the petrographic core description [1, 7–10].