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

Claim 2:
3. The geothermal heat arrangement according to claim 1, wherein:
the first thermal insulation extends along the rise pipe from ground surface towards the lower end of the ground hole and to at least 50% of the depth (D) of the ground hole or to at least ⅔ of the depth (D) of the ground hole; or
the first thermal insulation extends from a predetermined distance (E) from the lower end of the ground hole upwards along the rise pipe, the predetermined distance (E) from the lower end of the ground hole being at least 10% of the depth (D) of the ground hole or at least 20% of the depth (D) of the ground hole; or
the first thermal insulation extends along the rise pipe between ground surface and the lower end of the ground hole and from a predetermined distance (E) from the lower end of the ground hole along the rise pipe towards the ground surface along the rise pipe and from a predetermined distance from the ground surface towards the lower end of the ground hole.