Advanced in-ground/in-water heat exchange unit

• US 5,623,986 A
• Filed: 09/19/1995
• Issued: 04/29/1997
• Est. Priority Date: 09/19/1995
• Status: Expired due to Fees

• Current Assignee: Wiggs B. Ryland
• Original Assignee: Wiggs B. Ryland
• Inventors: Wiggs, B. Ryland
• Primary Examiner(s): Leo, Leonard R.
• Application Number:
  US08/530,053
• Time in Patent Office: 588 Days
• Field of Search: 165/45, 165/163, 165/177, 165/184, 62/260, 60/641.2
• US Class Current: 165/45
• CPC Class Codes: F24T 10/15 using bent tubes; using tubes assembled with connectors or with return headers
• CPC Class Codes: F28F 2270/00 Thermal insulation; Thermal decoupling
• CPC Class Codes: Y02E 10/10 Geothermal energy

Abstract

A geothermal heat exchange unit, which can be placed in ground or in water, having a hollow sleeve about which a helical winding of thermally conductive tubing is wound and a return length of thermally conductive tubing along the central axis of the sleeve separated from the inner wall of the sleeve by thermal insulating material. The heat exchange unit may be housed within a thermally conductive case with a thermally conductive material filling the gap between the inner wall of the case and the thermally conductive tubing surrounding the sleeve of the heat exchange unit. The thermally conductive case may have at least one set of helical fins which act as threads for ground insertion assistance. The heat exchange units may be combined to form greater lengths and be combined in series or parallel connection for greater efficiency.

Claims

1. A geothermal heat exchange unit comprising a hollow sleeve having inner and outer walls about central axis, a helical winding of thermally conductive tubing around the outer wall and a return length of said thermally conductive tubing along the central axis of the sleeve separated from the inner wall of the sleeve by thermally insulating material.

2. The geothermal heat exchange unit of claim 1, wherein said heat exchange unit is housed within a thermally conductive case having a closed bottom end, with a thermally conductive material filling a gap between an inner wall of the case and the thermally conductive tubing surrounding the sleeve of the heat exchange unit.

3. The geothermal heat exchange unit of claim 2, wherein said thermally conductive case has at least one set of helical fins which act as threads for ground insertion assistance.

4. The geothermal heat exchange unit of claim 2, wherein said geothermal heat exchange unit being of a defined overall length forms a geothermal heat exchange segment and is attachable to a companion geothermal heat exchange segment of a defined overall length to form a combination geothermal heat exchange unit having plural segments extending the overall length of said geothermal heat exchange unit.

5. The geothermal heat exchange unit of claim 4, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be connected in parallel to other geothermal heat exchange units, regardless of the number of attached companion segments, by common supply and return fluid lines.

6. The geothermal heat exchange unit of claim 5, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized for mechanical and electrical power production.

7. The geothermal heat exchange unit of claim 5, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to heat or chill water for a hydronic heating or cooling application.

8. The geothermal heat exchange unit of claim 5, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to enhance the efficiency of an air to air heat pump.

9. The geothermal heat exchange unit of claim 4, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be connected in series to other geothermal heat exchange units, regardless of the number of attached companion segments, by common supply and return fluid lines.

10. The geothermal heat exchange unit of claim 9, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized for mechanical and electrical power production.

11. The geothermal heat exchange unit of claim 9, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to heat or chill water for a hydronic heating or cooling application.

12. The geothermal heat exchange unit of claim 9, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to enhance the efficiency of an air to air heat pump.

13. The geothermal heat exchange unit of claim 2, wherein said closed bottom end of said thermally conductive case being configured in accordance with one shape from the group of shapes consisting essentially of flat, hemispherical, inverted conical, or truncated inverted conical.

14. The geothermal heat exchange unit of claim 1, wherein said geothermal heat exchange unit being of a defined overall length forms a geothermal heat exchange segment and is attachable to a companion geothermal heat exchange segment of a defined overall length to form a combination geothermal heat exchange unit having plural segments extending the overall length of said geothermal heat exchange unit.

15. The geothermal heat exchange unit of claim 14, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be connected in parallel to other geothermal heat exchange units, regardless of the number of attached companion segments, by common supply and return fluid lines.

16. The geothermal heat exchange unit of claim 15, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized for mechanical and electrical power production.

17. The geothermal heat exchange unit of claim 15, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to heat or chill water for a hydronic heating or cooling application.

18. The geothermal heat exchange unit of claim 15, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to enhance the efficiency of an air to air heat pump.

19. The geothermal heat exchange unit of claim 14, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be connected in series to other geothermal heat exchange units, regardless of the number of attached companion segments, by common supply and return fluid lines.

20. The geothermal heat exchange unit of claim 19, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized for mechanical and electrical power production.

21. The geothermal heat exchange unit of claim 19, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to heat or chill water for a hydronic heating or cooling application.

22. The geothermal heat exchange unit of claim 19, wherein each respective geothermal heat exchange unit, regardless of the number of attached companion segments, can be utilized to enhance the efficiency of an air to air heat pump.

23. The geothermal heat exchange unit of claim 1, wherein said geothermal heat exchange unit can be connected in parallel to other geothermal heat exchange units by common supply and return fluid lines.

24. The geothermal heat exchange unit of claim 23, wherein each respective geothermal heat exchange unit can be utilized for mechanical and electrical power production.

25. The geothermal heat exchange unit of claim 23, wherein said respective geothermal heat exchange unit can be utilized to heat or chill water for a hydronic heating or cooling application.

26. The geothermal heat exchange unit of claim 23, wherein said respective geothermal heat exchange unit can be utilized to enhance the efficiency of an air to air heat pump.

27. The geothermal heat exchange unit of claim 1, wherein said geothermal heat exchange unit can be connected in series to other geothermal heat exchange units by common supply and return fluid lines.

28. The geothermal heat exchange unit of claim 27, wherein each respective geothermal heat exchange unit can be utilized for mechanical and electrical power production.

29. The geothermal heat exchange unit of claim 27, wherein said respective geothermal heat exchange unit can be utilized to heat or chill water for a hydronic heating or cooling application.

30. The geothermal heat exchange unit of claim 27, wherein said respective geothermal heat exchange unit can be utilized to enhance the efficiency of an air to air heat pump.