GROUNDWATER CIRCULATION SYSTEM FOR OVERFLOWING OPEN GEOTHERMAL HOLE

摘要

The present invention relates to a groundwater circulation system for an overflowing open geothermal hole, and the objective of the present invention is to a groundwater circulation system for an overflowing open geothermal hole, capable of realizing groundwater circulation balanced with surrounding geothermal holes without causing failure in the overflowing open geothermal hole flooding outside due to a higher water level of the groundwater than that of the geothermal hole. To this end, the system comprises: a geothermal hole drilled for geothermal heat exchange; an upper geothermal hole protection hole institution the upper part of the geothermal hole to seal the geothermal hole with watertightness from the outside; a supply pipe inserted and installed inside the geothermal hole to supply groundwater to a water supply side; a circulation pump combined with the supply pipe; a recovery pipe to recover the groundwater to the geothermal hole from a ground heat exchanger after heat exchange; and an air vent installed to supply or discharge air in accordance with a water level change inside the geothermal hole. Moreover, since an operation water level of the geothermal hole is arbitrarily raised and maintained to use a feature that the groundwater overflows by a water level difference, the circulation pump is installed on the ground. Thus, while fundamentally preventing overflowing of the geothermal hole, groundwater circulation balanced with the surrounding geothermal holes can be realized in an area or place with a high groundwater level, thereby heat exchange efficiency of the geothermal hole can be largely increased without failure of a geothermal system.;COPYRIGHT KIPO 2017