Vertical geothermal heat exchangers - probes
The PRAWTECH geothermal probe is a component of the PRAWTECH ground source technology for heat pumps. The ground exchanger consists of a plastic geothermal U-shaped head connected by polyfusion with HDPE 100 RC pipes. The probe has been designed to optimize the process of applying the heat exchanger to the borehole and increase the operational safety of the ground heat source installation. Modern probe production technology is based on the highest quality raw materials and constant quality control of production and logistics processes.
Geothermal probe construction
The geothermal collectors is designed to collect the heat accumulated in the ground and for supplying an antifreeze medium to the ground heat pump. The PRAWTECH geothermal probe is designed for both heating and cooling operation.
The Prawtech geothermal probe is available in two pressure categories:
● Pn 12.5 (SDR 13.6): the maximum depth of the borehole must not exceed 120 meters;
● Pn 16 (SDR 11): the maximum depth of the borehole may not exceed 200 meters, in individual cases it is possible to apply the collector for deeper boreholes after written consultation with the geologist, designer and manufacturer.
And in two dimensional standards:
● 2 x 40mm: both collector pipes are made of high density polyethylene PE100 RC resistant to crack propagation with an external diameter of 40mm each;
● 2 x 32mm: both collector pipes are made of high-density polyethylene PE100 RC resistant to crack propagation with an external diameter of 32 mm each.
The collectors probe has been designed to guarantee ergonomics and safety during installation. The external dimensions of the head (see Fig. 1) reduce the resistance during application of the exchanger to the borehole, while the wedge shape of the U-shape makes it easier for the probe to overcome individual soil layers and securely locate it at the designed depth. An integral part of each Prawtech collector is the auxiliary conduit used for axial and parallel application to the drilled hole of the exchanger in chamber.
All PRAWTECH geothermal probes are delivered to the customer only after passing the pressure and flow tests in accordance with the internal quality control procedure.
Each ground exchanger has its own individual serial number.