Open type geothermal system

摘要

PURPOSE: A geothermal heat exchange system in an open type is provided to prevent a deep well pump from becoming blocked, and to remove sludge flowing into a case. CONSTITUTION: A geothermal heat exchange system(100) in an open type comprises a casing(120), a deep wall pump(130), an underwater supply pipe(140), and a return pipe(160). The casing is inserted into a tube well(110). The deep wall pump is inserted into the casing, and pumps underground water. The underwater supply pipe supplies the underground water to a heat exchanger(150). The return pipe returns the heat exchanged underground water to the inside of the case. The return pipe is placed in a space between a wall and the casing, and inserted into the casing at a portion near an underwater inlet(121). An end part of the return pipe is bent toward the upper part of the casing.