Geothermal Boreholes in Poland—Overview of the Current State of Knowledge

Geothermal energy can be useful after extraction from geothermal wells, borehole heat exchangers and/or natural sources. Types of boreholes are wells (for water production and injection) exchange with the ground without mass transfer). The purpose is to harvest present in aquifer. They often involve a pumping chamber. injection used for injecting back produced into aquifer, having harvested contained within. paper presents parameters Poland (geothermal exchangers). definitions boreholes, were ordered. dates construction, depth, purposes, spatial orientation, materials construction casing pipes, method type closure presented. Additionally, presented along their efficiency temperature measured at head. Borehole different designs paper. Only 19 created Laboratory Geoenergetics Faculty Drilling, Oil Gas, AGH University Science Technology Krakow; however, it globally unique collection exchangers, each which has design identical geological conditions: exchanger pipe configuration, seal/filling shank spacing variable. Using these operating tested. laboratory system also provide cold two university buildings. Two coefficients, separately characterize (wells exchangers) described