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

Claim 1:
2. The geothermal heat arrangement according to claim 1, wherein:
the ground hole forms at least part of the drain pipe for circulating the primary working fluid in the ground hole;
the piping arrangement comprises a separate drain pipe having a lower end arranged into the ground hole, the lower end of the rise pipe and the lower end of the separate drain pipe being arranged in fluid communication with each other for circulating the primary working fluid in the ground hole, the rise pipe being arranged inside the separate drain pipe; or
the piping arrangement comprises a separate drain pipe having a lower end arranged into the ground hole, the lower end of the rise pipe and the lower end of the separate drain pipe being arranged in fluid communication with each other for circulating the primary working fluid in the ground hole; and
the rise pipe is arranged inside the separate drain pipe in the ground hole, and that the rise pipe extends an extension distance (M) out from the lower end of the drain pipe towards the lower end of the ground hole; or
the piping arrangement comprises a separate drain pipe having a lower end arranged into the ground hole, the lower end of the rise pipe and the lower end of the separate drain pipe being arranged in fluid communication with each other for circulating the primary working fluid in the ground hole; and
the separate drain pipe extends from the ground surface into the ground hole to a free distance (P) from the lower end of the ground hole such that the ground hole forms the drain pipe along the free distance (P) from the lower end of the ground hole; or
the ground hole forms the drain pipe and the rise pipe is arranged inside the ground hole.