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

Claim 3:
4. The geothermal heat arrangement according to claim 1, wherein:
the thermal conductivity of the first thermal insulation is uniform in a direction along the ground hole; or
the thermal conductivity of the first thermal insulation decreases in the direction towards the lower end of the ground hole; or
the thickness of the first thermal insulation decreases in the direction towards the lower end of the ground hole such that the thermal conductivity of the first thermal insulation decreases in the direction towards the lower end of the ground hole; or
the first thermal insulation comprises at least two different thermal insulation materials arranged to the rise pipe such the thermal conductivity of the first thermal insulation decreases in the direction towards the lower end of the ground hole.