| 摘要 |
The present invention relates to an open type geothermal system, more specifically, to an open type geothermal system which installs a circulation pump for circulating underground water not in a well but on the ground to facilitate maintenance, installs a filter device and an automatic air discharging device in a circulation tube to eliminate foreign substances in the underground water and air in the tube, and installs a check valve, a flowmeter, and a water supply pipe in an intake side tube of an underground water circulation pump to fill the intake tube of the underground water circulation pump with water if necessary. |
