Patent ID: 11906205
Assignee: QUANTITATIVE HEAT OY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A geothermal heat arrangement comprising:
a ground hole provided into the ground and extending into the ground from the ground surface, the ground hole having a lower end;
a piping arrangement comprising a rise pipe having a lower end and arranged into the ground hole, and a drain pipe having a lower end, the lower end of the rise pipe and the lower end of the drain pipe being arranged in fluid communication with each other for circulating the primary working fluid in the ground hole;
the rise pipe is provided with a first thermal insulation surrounding the rise pipe along at least part of the length of the rise pipe;
a first pump connected to the piping arrangement and arranged to circulate the primary working fluid in the rise pipe; and
a heat exchange connection in connection with the piping arrangement for secondary heat exchange with the primary working fluid,, wherein:
the rise pipe is arranged inside the drain pipe in the ground hole;
the depth of the ground hole is at least 300 m;
the first pump is arranged to circulate the primary working fluid in a direction towards the lower end of the ground hole in the rise pipe and towards the ground surface in the drain pipe;
a heat pump or a heat exchanger is connected to the piping arrangement and arranged to provide heat exchange connection for the secondary heat exchange with the primary working fluid;
the heat pump or the heat exchanger is arranged to release thermal energy to the primary working fluid for heating the primary working fluid; and
the first pump is arranged to circulate the heated primary working fluid in the direction towards the lower end of the ground hole in the rise pipe for storing thermal energy to the ground at the lower end of the ground hole.