WO2008039202A1 - Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system - Google Patents
Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system Download PDFInfo
- Publication number
- WO2008039202A1 WO2008039202A1 PCT/US2006/038220 US2006038220W WO2008039202A1 WO 2008039202 A1 WO2008039202 A1 WO 2008039202A1 US 2006038220 W US2006038220 W US 2006038220W WO 2008039202 A1 WO2008039202 A1 WO 2008039202A1
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- WO
- WIPO (PCT)
- Prior art keywords
- encasement
- tube
- assembly
- trimmie
- tubing
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
- F24T2010/53—Methods for installation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Definitions
- the present invention relates generally to a geothermal direct exchange (“DX") heating/cooling system, which is also commonly referred to as a "direct expansion” heating/cooling system, comprising various design improvements and various specialty applications. More specifically, the present invention pertains to novel designs for encasements used to install refrigerant tubing in a vertical well DX heating/cooling system.
- DX geothermal direct exchange
- Geothermal ground source/water source heat exchange systems typically utilize fluid-filled closed loops of tubing buried in the ground, or submerged in a body of water, so as to either absorb heat from, or to reject heat into, the naturally occurring geothermal mass and/or water surrounding the buried or submerged fluid transport tubing.
- Geothermal water-source heating/cooling systems of a traditional design typically circulate, via a water pump, a fluid comprised of water, or water with anti-freeze, in plastic (typically polyethylene) underground geothermal tubing so as to transfer geothermal heat to or from the ground in a first heat exchange step.
- a refrigerant heat pump system is utilized to transfer heat to or from the water.
- an interior air handler is utilized to transfer heat to or from the refrigerant to heat or cool interior air space.
- the refrigerant fluid transport lines are placed directly in the sub-surface ground and/or water.
- the fluid transport lines typically circulate a refrigerant fluid, such as R-22, R-410A, or the like, in sub-surface refrigerant lines, typically comprised of copper tubing, to transfer geothermal heat to or from the sub-surface elements via a first heat exchange step.
- DX systems require only a second heat exchange step to transfer heat to or from the interior air space, typically by means of an interior air handler. Consequently, DX systems are generally more efficient than water-source systems because fewer heat exchange steps are required and because no water pump energy expenditure is necessary.
- DX systems are generally more efficient than water-source systems because copper is a better heat conductor than most plastics, and because the refrigerant fluid circulating within the copper tubing of a DX system generally has a greater temperature differential with the surrounding ground than the water circulating within the plastic tubing of a water-source system. Also, less excavation and drilling are typically required, and installation costs are typically lower, with a DX system as compared to a water-source system. [0005] While most in- ground/in- water DX heat exchange designs are feasible, various improvements have been developed intended to enhance overall system operational efficiencies. Several such design improvements, particularly in direct expansion/direct exchange geothermal heat pump systems, are taught in U.S. Patent No. 5,623,986 to Wiggs; in U.S.
- the present invention primarily relates to DX systems installed with vertically oriented sub-surface geothermal heat exchange apparatus, although an embodiment to utilize the invention in a lake or similar installation is also disclosed.
- copper refrigerant transport tubing is inserted within vertically oriented wells/boreholes by dropping and/or pushing the copper tubing into the wells.
- the refrigerant transport tubing is generally comprised of one smaller sized liquid copper refrigerant transport tube and one larger sized copper vapor refrigerant transport tube, coupled by means of a U-bend, or the like, at or near the lower distal end of the refrigerant transport tubing within the well.
- the lower distal end of the refrigerant transport tubing is subject to bending and/or other damage as it is lowered into the well and when it comes into contact with the bottom of the well.
- the U-bend can be scraped, dented, punctured, or crimped. Any such damage can either impede the refrigerant flow and impair system operational efficiencies or create a refrigerant leak which renders the system totally useless.
- This small rock ledge quite often acts as an impediment to lowering the copper refrigerant transport lines into the well.
- This small rock ledge also quite often acts as an impediment to lowering the trimmie tube into the well.
- a trimmie tube is used to pump grout into the well from the bottom to the top, so as to remove all air gaps once the copper tubing has been installed.
- a trimmie tube is often a 1 to 1.25 inch diameter polyethylene tube, or the like, with a round, open, distal end. The trimmie tube must be installed together with the copper tubing all the way to, or near, the bottom of the well. Often, even if the trimmie tube is able to be worked past a rock ledge by pushing, pulling, and twisting, the distal end of the tubing is damaged to the extent that the insertion of grout through the tube is impaired or even blocked.
- trimmie tubes are generally stored in a coiled fashion, as are most soft copper refrigerant grade tubes, the "memory" of the plastic tube coil when it is being lowered into a confined, straight, and vertically oriented walled borehole/well causes the tubing to push against the interior walls of at least one of the casing and the rock well.
- Such abrasion is wearing on the tubing, and results in additional force being required in an effort to push the tubing down into the well from the top.
- Simultaneous pushing on soft copper tubing usually results in additional tubing abrasion, occasioned by the walls of the well, and increases the danger of kinking or otherwise damaging the copper tubing.
- a third problem is that naturally occurring underground water is sometimes encountered within a well/borehole. While copper tubing is generally heavier than water, when the liquid refrigerant transport tube is insulated, the added displacement of the insulation results in flotation. This can require one to forcibly push the copper tubing, including the insulated liquid line, into the well in order to get it to the design depth at the bottom. Further, so as to prevent the copper tubing with an insulated liquid line from floating out of the well, the installer must secure the copper tubing at the top of the well.
- Grout 111 is a shrink/crack resistant cementitious grout that is highly water impermeable that was developed by Brookhaven National Laboratory in New York and is well understood by those skilled in the art.
- a fifth problem periodically encountered when installing DX system geothermal refrigerant transport tubing within a vertically oriented well/borehole is that rocks, particularly if shale or the like, can slide across the borehole, thereby impeding tubing installation. Efforts to eliminate such impediments were generally limited to either re-drilling and/or cleaning out the borehole, or to dropping a heavy steel bar, secured to the surface by a rope, into the hole in an effort to break through the barrier. These conventional methods required significant extra time and labor. [0013] Consequently, a method is needed for efficiently and safely installing copper tubing, particularly when at least one of the refrigerant transport lines is insulated. Also needed is a method for efficiently and safely installing the trimmie tube to be used for grouting, so as to avoid the problems of tubing damage, abrasion, blocking rocks/ledges/rims, and flotation.
- This is accomplished by providing a wide (relative to the diameter of the borehole/well), weighted, and elongated, encasement assembly comprising an encasement tube with a flat top and with at least one of a rounded and a cone shaped bottom end, within which to insert the copper tubing and the trimmie tubing as it is being lowered into the well/borehole.
- This configuration also allows the installer to easily pull a loosely attached trimmie tube loose from the tube without damaging the copper refrigerant transport tubing.
- Such an encasement assembly because a preferred embodiment has dimensions similar to a torpedo, can sometimes be referred to as a "torpedo" design.
- the encasement assembly of the present invention is comprised of an encasement tube, or the like, made of steel, PVC, copper, metal, plastic, or the like, that is longer than it is wide.
- the encasement tube has a main body portion with a flat upper top portion.
- the width of the main body portion, for use in a 4.5 inch diameter well/borehole for example, would preferably be in the 2.5 inch to 3 inch range, while the width for use in a larger diameter well/borehole could be larger, with preferably at least a 1 inch diameter clearance.
- the length of the encasement tube would be at least longer than the width of the well/borehole, so as to prevent the encasement tube from turning sideways in the well.
- the length should preferably be at least longer than the U-bend portion of the copper refrigerant transport tubing, and should be long enough, so that when combined with its contents, will achieve the desired weight.
- the weight of the completed encasement tube should preferably be in the 10 pound to 40 pound range. The heavier the encasement (25 to 40 pounds), the easier it is to install the copper tubing in a water-filled well. The lighter the encasement tube (10 to 20 pounds), the easier it is to pull out the copper tubing for any necessary repairs via pressure testing prior to grouting.
- the encasement tube of the present invention should preferably have a main body portion of relatively constant diameter and at least one of a rounded and a cone-shaped nose, or the like, extending from the base of the main body portion of the tube.
- a cone-shaped nose end is preferable because it helps to guide the encasement tube past any rock ledges. It also allows the weight of the encasement assembly, and its accompanying/attached refrigerant transport tubing, to more easily break through any sub-surface materials that may have worked their way partially or totally across the well or borehole.
- the U-bend of the copper tubing within the encasement tube should be positioned at least 1 inch, and preferably 2 inches, above the base of the main body portion of the encasement tube, so that if the rounded or cone-shaped nose breaks off, the refrigerant transport tubing will not be damaged.
- the distal end of the refrigerant transport tubing is placed within the encasement tube and may optionally include a heating mode pin restrictor assembly, as would be well understood by those skilled in the art.
- At least one, and preferably two, eye bolts, or the like, are placed near the top of the encasement tube in a manner so that the rounded eye bolt end of each respective bolt extends slightly above the top rim of the tube, but extending only enough for a wire, a line, or other fastening means, to extend across the top of the encasement tube rim and through the rounded top of the eye bolt.
- the eye bolt(s) will be used for securing the trimmie tube to the encasement tube so as to retain the distal lower end of the trimmie tube within the interior shell of the main body portion of the encasement tube while allowing the trimmie tube to be easily pulled loose without damaging the refrigerant transport tubing when grouting commences.
- This requires enough room to be left within the top interior of the encasement tube to fit the refrigerant transport tubing and the trimmie tube. For example, 1 to 2 inches may be left open (not filled with a flat topped grout) within the top interior portion of the encasement tube.
- the optional second eyebolt, or the like is situated near the top of the encasement tube in a position so as not to impair the insertion of the trimmie tube around the first eyebolt.
- the second eyebolt which, for example, may be a 1.25 inch long eyebolt, or the like, is optionally used to secure a rope, line, wire, chain, or the like to the encasement to control the descent of the encasement and its attached refrigerant transport tubing and trimmie tube into the well and/or to be used in raising the assembly up within, or out of, the well for servicing prior to grouting.
- the rope can be used to help raise the entire encasement assembly to the point where the leak is located and repaired. Thereafter, the rope can be used to re-lower the assembly back down into the well.
- the fill material fills the entire remaining volume of the containment tube, including the rounded or cone-shaped nose, except for the approximate one to two-inch segment near the top of the encasement tube, so as to leave adequate room for the trimmie tube lower distal end to be fully protected within the encasement tube as the assembly is lowered into the well.
- the cementitious fill material near the top of the encasement tube is left level and flat within the tube. This provides a flat plate for water, if any water naturally occurs within the well, and for the heavy grout well/borehole fill material to push against as the grout is added within the empty annular space of the well/borehole over the top of the encasement tube, from the bottom to the top of the well/borehole.
- This design utilizes the weight of the grout against the flat surface of the top of the encasement, near the bottom of the well, as well as the additional weight of the grout filled encasement tube, to prevent the refrigerant transport tubing, in conjunction with any insulation around the liquid line portion of the refrigerant transport tubing, from floating out of a water-filled well, and from floating out of a well as the grout/fill material is added and cures.
- the sub-surface geothermal heat exchange refrigerant transport tubing at the bottom of, or within, a lake, a river, a bay, a creek, a stream, a sea, or the like.
- the eye bolt for a rope attachment would preferably be placed at the lower distal end of the nose of the encasement tube.
- a small hole could be drilled through the cone-shaped nose of the encasement tube of sufficient size to insert a rope, such as a wire rope, a nylon rope, a plastic rope, or the like.
- the rope would be used to pull the encasement tube and its attached refrigerant transport lines into position.
- the encasement tube is useful to pull the refrigerant transport tubing into position, as well as to help anchor the distal end of the refrigerant transport tubing into position, via the weight of the encasement.
- a rope/line, or the like may be attached to the eye-bolt or through the small hole at the end of the cone- shaped nose of the encasement tube, which rope/line is attached to a flotation device, such as a buoy, or the like, to mark the sub-surface location of the encasement assembly and to assist in accessing same for moving or for servicing if ever desired.
- FIG. 1 is a cut-away side view of one embodiment of the encasement assembly of the present invention showing an encasement tube having a cone-shape nose and main body portion with a flat top, situated within a well/borehole, with attached liquid and vapor refrigerant transport lines, a trimmie tube attached to an eyebolt extending from the grout fill within the encasement tube, and an attached rope.
- FIG. 2 is a top view of the encasement assembly of the present invention, showing an extended smaller diameter liquid refrigerant transport line, an extended larger diameter vapor refrigerant transport line, a trimmie tube attached to a first eyebolt with a wire, and a rope tied to an optional second eyebolt.
- FIG. 3 is a side view of an embodiment of the encasement assembly tube of the present invention in which the encasement tube has a rounded nose.
- FIG. 4 is a side view of an embodiment of the encasement assembly of the present invention positioned in lake water and having a ring at the distal end of the cone-shaped nose of the encasement tube.
- the ring is used to provide an optional attachment point for a rope to be utilized to pull the encasement tube and its pre-assembled attached liquid and vapor refrigerant transport tubing into position at the bottom of, or within, a lake.
- An optional line is also shown as being attached to the ring, and is shown as extending up to a flotation device to mark the location of the encasement assembly at the lake surface.
- FIG. 5 is a side view of an embodiment of the encasement assembly of the present invention positioned in lake water in which the encasement tube has a small hole drilled through the nose to provide an optional attachment point for a rope and/or a marker float.
- FIG. 1 a cut-away side view of one embodiment of the encasement assembly 1, comprising an encasement tube 2 with a cone-shaped nose 3 extending from the base 10 of a main body portion.
- the main body portion of the tube 2 (along length 36) is shown here as substantially cylindrical, formed from steel, copper, metal, or plastic pipe, or the like.
- the encasement tube 2 does not necessarily have to be cylindrical, as is well understood by those skilled in the art.
- the tube 2 may be multi-flat sided, or the like (not shown herein as multi- flat sided tubing is well understood by those skilled in the art).
- the main body portion of the encasement tube 2 is longer 36 than the width 37 of the well/borehole 21 so that the encasement assembly 1 cannot turn sideways during its installation into the well/borehole 21.
- the well/borehole 21 is drilled/dug into the ground 41, with such drilling process being well understood by those skilled in the art.
- the cone-shaped nose 3 of the tube 2 is preferably approximately six inches long, coming to a point at the bottom end 4.
- the nose 3 can be attached to the main body portion of the encasement tube in a manner to allow the nose 3 to separate from the main body portion during installation.
- a liquid refrigerant transport line 5 is shown, a distal end of which is shown in the form of a U-bend 8 at a point about two inches 27 above the flat base 10 of the main body portion of tube 2.
- the liquid line 5 is attached by a coupling 29 to the vapor refrigerant transport line 6, all within the encasement tube 2.
- the top end 7 of the tube 2 is flat.
- the distal end or bottom 9 of transport lines should preferably be situated about two inches 27 (not drawn to scale here) from the base 10 of the tube 2, so that if the cone-shaped nose 3 breaks off during insertion into a well/borehole 21, the U-bend 8 will not be damaged.
- the encasement 1 is shown here as being positioned at the lower end 22 of a well/borehole 21.
- the well/borehole 21 is drilled/dug into the ground 41, with such drilling/digging processes being well understood by those skilled in the art.
- a first eyebolt 11 is shown with its rounded head 12 extending only slightly above the top 7 of the encasement tube 2.
- the first eyebolt 11 is used as a means to secure the lower distal end
- trimmie tube 14 is conventionally a polyethylene tube utilized for insertion of a grout fill 15 into a geothermal well/borehole 21, as is well understood by those skilled in the art.
- a lower portion of eyebolt 11, including nut 32, is positioned totally within the grout 15 so as to secure the eyebolt 11 in place.
- a small hole 17 is drilled through both sides of the trimmie tube 14 so as to permit a wire 19, or the like, to be inserted through the small holes 17 in a manner so as to extend through the rounded head 12 of the first eyebolt 11.
- the wire 19 is then bent around 20 the trimmie tube 14 to hold the trimmie tube 14 in place when the encasement 1 is lowered into the well 21, but so as to easily be broken or pulled loose when the trimmie tube 14 is pulled up and away from the encasement 1 during the grouting process without damaging either the liquid or the vapor refrigerant transport lines, 5 and 6.
- An optional second eyebolt 23 is shown positioned within the encasement tube 2 in a manner similar to the first eyebolt 11, but at a position 31 where it does not interfere with either the trimmie tube 14 or the liquid and vapor refrigerant transport lines, 5 and 6.
- a winch not shown herein as winches are well understood by those skilled in the art
- the remainder of the interior of the encasement tube 2 is shown as being filled with a grout/fill material 15 (which is preferably a cementitious grout such as Grout 111 or the like) to a point about two inches 27 (not drawn to scale) below the top 7 of the tube 2, so as to leave room for the lower distal end 13 of a trimmie tube 14 to totally fit with the interior upper portion 18 of the trimmie tube 14. This protects the lower distal end 13 of the trimmie tube 14 from becoming damaged or disfigured as it is lowered into the well 21.
- the grout/fill material 15, which is preferably a cementitious grout such as Grout 111 or the like, is left with a flat surface 26 at a point about two inches 27 below the top 7 of the tube 2.
- the flat surface 26 will provide resistance helping to prevent the encasement assembly 1 and its attached refrigerant transport tubing, 5 and 6, together with any insulation 33 surrounding the liquid line 5, from floating out of the well 21 if the well contains natural water fill (natural water fill is not shown herein as such is well understood by those skilled in the art), and to help prevent the encasement assembly 1 from floating out of the well 21 during the grouting process (the grouting process is well understood by those skilled in the art).
- a cementitious grout, such as Grout 111 is preferred as a fill material for the tube 2 because it is shrink resistant, crack resistant, water resistant, and highly heat conductive when compared to other conventional grouts. Also, Grout 111 is relatively heavy, weighing about 18.5 pounds per gallon (over twice the weight of water) and will therefore displace any water naturally occurring within the well/borehole 21 (not shown).
- FIG. 2 shows the top of the encasement assembly 1, with a smaller diameter liquid refrigerant transport line 5, a larger diameter vapor refrigerant transport line 6, a trimmie tube 14 attached to a first eyebolt 11 with a wire 19 securing the trimmie tube 14 to the first eyebolt 11 within the tube 2 for protective purposes, and a rope 24, or the like, secured 30 to an optional second eyebolt 23 for optional assistance in raising and/or lowering the entire assembly 1.
- FIG. 3 is a side view of another embodiment of the encasement assembly 1 in which the encasement tube 2 has a rounded nose 28.
- FIG. 4 is a side view of another embodiment of the encasement assembly 1 and tube 2 having a ring 34 at the distal end 13 of the cone- shaped nose 3.
- the ring 34 could be an eyebolt, a hook, a U-bolt, or the like, as would be well understood by those skilled in the art.
- the ring 34 is used to provide an optional attachment point for a rope 24, such as a wire rope, a nylon rope, or the like, as would be well understood by those skilled in the art.
- the rope 24, in this particular application, would be utilized to pull the encasement assembly 1 and its pre-assembled attached liquid and vapor refrigerant transport tubing, 5 and 6, into position at the bottom 9 of, or within, a lake 35, a river, a bay, the ocean, or the like, surrounded by ground 41. In such a lake 35 installation, a trimmie tube is not required.
- An optional line 38 is also shown as being attached to the ring
- a flotation device 39 such as a buoy, or the like, to mark the location of the encasement assembly 1 at the water surface 40 of the lake 35.
- FIG. 5 is a side view of the encasement assembly 1 in which the encasement tube 2 has a small hole 17 drilled, or the like, through the cone- shaped nose 3.
- the hole 17 is used to provide an optional attachment point for a rope 24, such as a wire rope, a nylon rope, or the like, as would be well understood by those skilled in the art.
- the rope 24, in this particular application would be utilized to pull the encasement assembly 1 and its pre- assembled attached liquid and vapor refrigerant transport tubing, 5 and 6, into position at the bottom 9 of, or within, a lake 35, a river, a bay, the ocean, or the like, surrounded by ground 41.
- a trimmie tube (not shown in this drawing, but well understood by those skilled in the art) is not required.
- FIG. 17 in FIG. 5, and is shown as extending up to a flotation device 39, such as a buoy, or the like, to mark the location of the encasement assembly 1 at the lake 35 water surface 40.
- a flotation device 39 such as a buoy, or the like
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06815890.6A EP2076720A4 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
PCT/US2006/038220 WO2008039202A1 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
MX2009003346A MX2009003346A (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system. |
AU2006348699A AU2006348699B2 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
CN2006800564845A CN101542216B (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system and method of mountin refrigerant tubing |
CA002664644A CA2664644A1 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
KR1020097008705A KR20090077804A (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
JP2009530320A JP5079009B2 (en) | 2006-09-29 | 2006-09-29 | Housing assembly for refrigerant tube underground installation in direct exchange heating / cooling system |
BRPI0622057-6A2A BRPI0622057A2 (en) | 2006-09-29 | 2006-09-29 | ECAMISATION ASSEMBLY, AND METHOD FOR INSTALLING SUBSUFFICIAL REFRIGERANT PIPE |
IL197866A IL197866A (en) | 2006-09-29 | 2009-03-26 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
EG2009030411A EG25600A (en) | 2006-09-29 | 2009-03-29 | Encasement assembly for installation of subsurfacerefrigerant tubing in a direct exchange heating/c ooling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2006/038220 WO2008039202A1 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008039202A1 true WO2008039202A1 (en) | 2008-04-03 |
Family
ID=39230487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/038220 WO2008039202A1 (en) | 2006-09-29 | 2006-09-29 | Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling system |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP2076720A4 (en) |
JP (1) | JP5079009B2 (en) |
KR (1) | KR20090077804A (en) |
CN (1) | CN101542216B (en) |
AU (1) | AU2006348699B2 (en) |
BR (1) | BRPI0622057A2 (en) |
CA (1) | CA2664644A1 (en) |
EG (1) | EG25600A (en) |
IL (1) | IL197866A (en) |
MX (1) | MX2009003346A (en) |
WO (1) | WO2008039202A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012215338A (en) * | 2011-03-31 | 2012-11-08 | Mitani Sekisan Co Ltd | Method of burying pipe in pile hole |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015064188A (en) * | 2013-09-26 | 2015-04-09 | 積水化学工業株式会社 | Heat collecting pipe for earth thermal |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858679A (en) * | 1987-03-11 | 1989-08-22 | Fujikura Ltd. | Corrugated heat pipe |
US5029633A (en) * | 1988-01-04 | 1991-07-09 | Mann Technology Limited Partnership | Cooling pond enhancement |
US5054297A (en) * | 1989-09-22 | 1991-10-08 | Kabushiki Kaisha Toshiba | Cold storage system |
US5477703A (en) * | 1994-04-04 | 1995-12-26 | Hanchar; Peter | Geothermal cell and recovery system |
US5623986A (en) * | 1995-09-19 | 1997-04-29 | Wiggs; B. Ryland | Advanced in-ground/in-water heat exchange unit |
US5816314A (en) * | 1995-09-19 | 1998-10-06 | Wiggs; B. Ryland | Geothermal heat exchange unit |
US6212896B1 (en) * | 1998-11-05 | 2001-04-10 | John Genung | Heat transfer column for geothermal heat pumps |
US6789608B1 (en) * | 2002-04-22 | 2004-09-14 | B. Ryland Wiggs | Thermally exposed, centrally insulated geothermal heat exchange unit |
US6932149B2 (en) * | 2002-09-20 | 2005-08-23 | B. Ryland Wiggs | Insulated sub-surface liquid line direct expansion heat exchange unit with liquid trap |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59115069U (en) * | 1983-01-25 | 1984-08-03 | 株式会社青森リビエラ | snow melting equipment |
US5590715A (en) * | 1995-09-12 | 1997-01-07 | Amerman; Thomas R. | Underground heat exchange system |
JP3554923B2 (en) * | 1999-12-13 | 2004-08-18 | 昭己 洲澤 | How to embed an underground heat exchanger |
JP2003302108A (en) * | 2002-04-12 | 2003-10-24 | Misawa Kankyo Gijutsu Kk | U-tube type geothermal heat exchanger |
JP4318516B2 (en) * | 2003-09-22 | 2009-08-26 | 旭化成ホームズ株式会社 | Geothermal exchange device |
JP2006052924A (en) * | 2004-08-09 | 2006-02-23 | Tetsuo Murai | Method for artificially preparing constant temperature layer in underground shallow part |
CN2769779Y (en) * | 2005-03-01 | 2006-04-05 | 王全龄 | Vertical pipe burying soil heat exchanger |
-
2006
- 2006-09-29 WO PCT/US2006/038220 patent/WO2008039202A1/en active Application Filing
- 2006-09-29 CA CA002664644A patent/CA2664644A1/en not_active Abandoned
- 2006-09-29 JP JP2009530320A patent/JP5079009B2/en not_active Expired - Fee Related
- 2006-09-29 CN CN2006800564845A patent/CN101542216B/en not_active Expired - Fee Related
- 2006-09-29 BR BRPI0622057-6A2A patent/BRPI0622057A2/en not_active IP Right Cessation
- 2006-09-29 MX MX2009003346A patent/MX2009003346A/en not_active Application Discontinuation
- 2006-09-29 AU AU2006348699A patent/AU2006348699B2/en not_active Ceased
- 2006-09-29 KR KR1020097008705A patent/KR20090077804A/en active IP Right Grant
- 2006-09-29 EP EP06815890.6A patent/EP2076720A4/en not_active Withdrawn
-
2009
- 2009-03-26 IL IL197866A patent/IL197866A/en not_active IP Right Cessation
- 2009-03-29 EG EG2009030411A patent/EG25600A/en active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858679A (en) * | 1987-03-11 | 1989-08-22 | Fujikura Ltd. | Corrugated heat pipe |
US5029633A (en) * | 1988-01-04 | 1991-07-09 | Mann Technology Limited Partnership | Cooling pond enhancement |
US5054297A (en) * | 1989-09-22 | 1991-10-08 | Kabushiki Kaisha Toshiba | Cold storage system |
US5477703A (en) * | 1994-04-04 | 1995-12-26 | Hanchar; Peter | Geothermal cell and recovery system |
US5623986A (en) * | 1995-09-19 | 1997-04-29 | Wiggs; B. Ryland | Advanced in-ground/in-water heat exchange unit |
US5816314A (en) * | 1995-09-19 | 1998-10-06 | Wiggs; B. Ryland | Geothermal heat exchange unit |
US6212896B1 (en) * | 1998-11-05 | 2001-04-10 | John Genung | Heat transfer column for geothermal heat pumps |
US6789608B1 (en) * | 2002-04-22 | 2004-09-14 | B. Ryland Wiggs | Thermally exposed, centrally insulated geothermal heat exchange unit |
US6932149B2 (en) * | 2002-09-20 | 2005-08-23 | B. Ryland Wiggs | Insulated sub-surface liquid line direct expansion heat exchange unit with liquid trap |
Non-Patent Citations (1)
Title |
---|
See also references of EP2076720A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012215338A (en) * | 2011-03-31 | 2012-11-08 | Mitani Sekisan Co Ltd | Method of burying pipe in pile hole |
Also Published As
Publication number | Publication date |
---|---|
AU2006348699B2 (en) | 2011-08-04 |
BRPI0622057A2 (en) | 2014-05-06 |
CA2664644A1 (en) | 2008-04-03 |
IL197866A (en) | 2013-06-27 |
IL197866A0 (en) | 2009-12-24 |
CN101542216B (en) | 2011-12-07 |
EP2076720A4 (en) | 2013-11-27 |
AU2006348699A1 (en) | 2008-04-03 |
MX2009003346A (en) | 2009-08-28 |
EP2076720A1 (en) | 2009-07-08 |
KR20090077804A (en) | 2009-07-15 |
EG25600A (en) | 2012-03-18 |
CN101542216A (en) | 2009-09-23 |
JP2010505086A (en) | 2010-02-18 |
JP5079009B2 (en) | 2012-11-21 |
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