Fig. 1
From: Six years of high-resolution monitoring data of 40 borehole heat exchangers
Overview of the BHE field and monitoring system. (a) Location of the 40 BHEs (numbered circles) and the three underground vaults (A, B, C), in which the sensors are placed. Horizontal supply and return pipes between the BHEs and the vaults are shown in black, and the main pipes connecting the underground vaults to the building in orange. (b) Photography of sensors in underground vault B. (c) Schematic overview of underground vault B with sensors at each BHE, as well as cross sections of the horizontal connecting pipes and the BHE.
