Patent ID: 10962261

Abstract:
A geothermal system transfers heat between the earth and a target. The system includes a containment vessel having an interior volume and a valve being selectively opened and closed to supply a first fluid to the interior volume of the containment vessel so that heat is transferred between the earth and the first fluid. An interior heat exchange line is located in the interior volume of the containment vessel. A second fluid is located in the heat exchange line to transfer heat between the first fluid and the target. A pump for circulates the second fluid through the interior heat exchange line. The system also includes a low temperature activated switch configured to open the valve in response to a temperature of the first fluid in the interior volume of the containment vessel dropping below a preset temperature, and a high temperature activated switch configured to open the valve in response to the temperature of the first fluid in the interior volume of the containment vessel rising above a preset maximum value.