Ground heat exchanger

a heat exchanger and ground technology, applied in geothermal energy generation, lighting and heating apparatus, heat production devices, etc., can solve the problems of not being able to ensure that the borehole will be completely filled, the tremie pipe not being positioned to a position low enough in the borehole is very difficult, and the borehole will not be completely filled

Inactive Publication Date: 2012-11-15
UPONOR INNOVATION AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a new type of ground heat exchanger with a refilling pipe permanently attached to the lower part of the exchanger. This solution ensures reliable re-fueling of the borehole and fast, certain refilling without additional steps.

Problems solved by technology

It is very challenging to ensure that the borehole will be filled completely.
For example ensuring that the tremie pipe would be positioned to a position low enough in the borehole is very challenging.
If the tremie pipe is not in a low enough position there is a risk that the borehole will not be filled completely.
It is also sometimes very difficult to assemble the tremie pipe with the ground heat exchanger and therefore the assembly may take a long time.

Method used

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Examples

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Embodiment Construction

[0010]FIG. 1 shows partly in cross-section a side view of a ground heat exchanger 2 positioned in a borehole 1. In the following, the ground heat exchanger 2 may also be called an exchanger 2. The exchanger 2 comprises a flow leg 3, a heat exchanger leg 4, an upper manifold 7 and a lower manifold 8. The upper manifold 7 is positioned in the upper part of the borehole 1, and the lower manifold 8 is positioned at the bottom of the borehole 1. The flow leg 3 extends from the upper part of the borehole 1 through the upper manifold 7 to the lower manifold 8. The heat exchanger leg 4 comprises an outlet pipe 5 extending upwards from the upper manifold 7 and a plurality of heat exchanger pipes 6 between the upper manifold 7 and the lower manifold 8. The heat exchanger pipes surround the flow leg 3. The lower manifold 8 connects the flow leg 3 and the heat exchanger leg 4 together by dividing the heat transfer fluid flow in the flow leg 3 into smaller volume flows for the heat exchanger pip...

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Abstract

The invention relates to a ground heat exchanger to be positioned in a borehole (1) in the ground. The ground heat exchanger (2) comprises a flow leg (3) and a heat exchanger leg (4). Yet further the ground heat exchanger (2) comprises a refilling pipe (9) that is permanently attached to a lower part of the ground heat exchanger (2).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]Under 35 USC 119, this application claims the benefit of the May 13, 2011 priority date of European Application No. 11166017.1, the contents of which are hereby incorporated by reference in their entirety.FIELD OF THE INVENTION[0002]The invention relates to a ground heat exchanger to be positioned in a borehole in the ground, the ground heat exchanger comprising a flow leg and a heat exchanger leg.BACKGROUND OF THE INVENTION[0003]Ground heat exchangers are used as heat transfer units in heating or cooling systems utilizing the ground as a heat source or as heat storage. In the heating systems the ground heat exchangers are used for collecting heat present in the ground and for conveying or carrying it for warming the building, for example. In the cooling systems the ground heat exchangers are used for conveying or carrying extra heat present in the building and for transferring it to the ground.[0004]A borehole is formed for the ground he...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F24J3/08
CPCY02E10/125F24J3/083F24T10/15Y02E10/10
InventorRUDOLF, JURGEN
OwnerUPONOR INNOVATION AB