JP2010505086A - Housing assembly for refrigerant tube underground installation in direct exchange heating / cooling system - Google Patents

Abstract

  The containment assembly (1) for installing the refrigerant pipe underground in the direct exchange heating / cooling system has a weight for lowering the U-shaped part (8) at the bottom end of the refrigerant pipe to the well / bore hole (21). A protective housing tube (2) is provided. The housing tube (2) has a main body portion and a circular protrusion or a conical protrusion. The U-shaped portion at the tip of the refrigerant transport line (5, 6) is accommodated in a cement grout (15) in the accommodating pipe (2). The grout (15) in the containment tube (2) has at least a flat upper surface to prevent upward levitation, and at least for fixing the grout pump tube (14) with a disposable wire (19) during installation. It has one eyebolt (11). An optional nose ring (34) is attached to the lower tip of the receiving tube (2) in order to attach the float (39) that serves as a mark in the water.

Description

  The present invention generally relates to a geothermal direct exchange (“DX”) heating / cooling system, also commonly referred to as a “direct expansion” heating / cooling system, which includes various design improvements and various special applications. including. More particularly, the present invention relates to a novel design for a container used for installing refrigerant tubes in a vertical well DX heating / cooling system.

  Geothermal / water source heat exchange systems typically utilize a closed loop filled with fluid in a tube buried in the ground or submerged in water. It absorbs or dissipates heat naturally generated from the geothermal mass and / or water around the buried or submerged fluid transport tube. The loop of the tube extends to the surface and is used to circulate a naturally warmed or naturally cooled fluid to the internal air heat exchange means.

  Conventionally designed geothermal water source heating / cooling systems typically circulate a fluid composed of water or antifreeze water into a plastic (generally polyethylene) underground geothermal pipe by means of a water pump. In the heat exchange process, geothermal heat is transported to or from the ground. In the second heat exchange step, a refrigerant heat pump system is used to transport heat into or out of the water. In the third heat exchange step, an internal air handler (consisting of finned tubes and fans) is used to heat or cool the internal space by transporting heat to or from the refrigerant. .

  In more recent geothermal DX heat exchange systems, refrigerant fluid transport lines are placed directly in the ground and / or in the water. In a general fluid transport line, a refrigerant fluid such as R-22 or R-410A is circulated through an underground refrigerant line usually made of a copper tube, and to or from the underground element by a first heat exchange process. Transport geothermal. DX systems generally require only a second heat exchange step to transport heat to or from the interior space by an interior air handler. As a result, the DX system requires less heat exchange steps and is generally more efficient than the water source system because it does not require water pump energy consumption. In addition, copper has better thermal conductivity than most plastics, and the refrigerant fluid circulating in copper pipes in DX systems has a greater temperature difference from the surrounding ground than the water circulating in the plastic pipes of the water source system. Thus, the DX system is generally more efficient than the water source system. Also, compared to water source systems, DX systems generally require less exhaust and excavation and generally require less installation costs.

  Most underground / underwater DX heat exchange designs are feasible, and various improvements have been made to improve the overall system work efficiency. Some such design improvements, particularly in direct expansion / direct exchange geothermal heat pump systems, are taught in U.S. Patents granted to Wiggs et al. Reference 3 and Patent Document 4), the disclosures of which are incorporated herein by reference. Such disclosure includes horizontal and vertical underground heat / geothermal exchange means.

  Although the present invention primarily relates to a DX system with underground geothermal heat exchangers installed in the vertical direction, embodiments are also disclosed that utilize the present invention in lakes and similar installation locations. Historically, refrigerant transport copper tubes are inserted into vertical wells / boreholes by dropping and / or pushing copper tubes into the wells. This method faces several problems. First, the refrigerant transport pipe is usually composed of one small-diameter liquid refrigerant transport copper pipe and one large-diameter gas refrigerant transport copper pipe, and these transport copper pipes are located at the lower end of the refrigerant transport pipe in the well. It is connected by a U-shaped tube or the like at or near the part. The lower tip of the refrigerant transport tube is bent and / or otherwise damaged when the transport copper tube is lowered into the well and when the transport copper tube contacts the bottom of the well. For example, the U-shape can be broken, dented, ruptured, or corrugated. Any such damage can cause refrigerant leakage that impedes refrigerant flow and reduces the working efficiency of the system or renders the system completely unusable.

  Furthermore, those skilled in the art will appreciate that several other problems are regularly encountered when refrigerant tubes are installed in a well. One such problem is that a casing is needed to support the loose soil until it hits a hard rock. In such a case, a small drill bit is extended through the casing and the rock is drilled to the desired depth. As a result, a small circular rock ledge is usually left in place in the well where the casing hits the rock and begins to excavate the rock. This occurs because the small drill bits used to drill rocks are smaller in diameter than the large drill bits used to drill enough holes in the casing size. For example, the casing is 6 inches in diameter, while the lower rock drill bit is only about 4.5 inches in diameter. This small rock ledge also quite often acts as an obstacle to lowering the refrigerant transport copper line to the well.

  This small rock bulge also quite often acts as an obstacle to lowering the grout pump tube to the well. Grout pump tubing is used to pump grout from the bottom to the top of the well. Thereby, all the voids can be removed after the copper pipe is installed. The grout pump tube is often a polyethylene tube with a diameter of 1 to 1.25 inches and has a round open tip. The grout pump tube must be installed with the copper tube at or near the bottom of the well. Even if the grout pump pipe is managed to be installed beyond the rock ledge by pushing, pulling and twisting, the tip of the grout pump pipe often prevents or blocks grout injection by the grout pump pipe. Damaged enough to even do.

  Grout pump tubes are typically coiled and stored, so that, like the most flexible grade refrigerant copper tubes, a limited range of straight boreholes / wells in a walled vertical direction. As the tube is lowered into the well, the “memory” on the coiled plastic tube forces the tube against the inner wall of at least one of the casing and the rock well. Such friction causes the tube to wear and, as a result, additional forces are required when trying to push the tube down from the top into the well. Similarly, pressing a flexible copper tube typically increases the risk of friction being applied by the well wall, causing the copper tube to be kinked or otherwise damaged.

  Third, we sometimes face groundwater problems that occur naturally in wells / boreholes. Copper tubes are generally heavier than water, but if the liquid refrigerant transport tube is insulated, it will float due to the added displacement of the insulation. This forces someone to force the copper tube containing the insulated liquid line to reach the design depth of the bottom of the well. In addition, the installer must secure the copper tube to the top of the well in order to prevent the copper tube with the insulated liquid line from levitating out of the well.

  The DX system faces a fourth problem when an insulated liquid line is utilized. The fourth problem is that the insulation around the liquid line has a sufficient amount of grout (Grout 111) to float the copper tube out of the well when the grout filler is pumped. Displace at least twice the weight of water). As with wells filled with water, when using a cementitious grout such as Grout 111 etc., the installer will have the top of the copper tube extending from the top of the well until at least the grout has hardened. There is a troubling concern that it needs to be blocked, tethered and otherwise fixed. Grout 111 is a highly water impervious, shrink / crack resistant cementitious grout developed by Brookhaven National Laboratory, New York and well understood by those skilled in the art.

  The fifth problem is regularly encountered when installing DX system geothermal refrigerant transport pipes in vertical wells / boreholes. The fifth problem is that rocks, especially shale, can slide down the borehole, hindering the pipe installation. Attempts to eliminate such obstacles generally involve trying to break the barrier by re-digging and / or clearing the borehole or dropping a heavy steel rod secured to the surface by a rope into the hole. limited. These conventional methods require excessive time and effort.

  As a result, a method for efficiently and safely installing a copper tube is required, particularly when insulating at least one of the refrigerant transport lines. Also to efficiently and safely install grout pump tubes used for grout injection so that tube damage, friction, rock / rock ledge / edge blockage, and levitation problems can be avoided. A method is also needed.

  It is an object of the present invention to improve and improve the efficiency and safety of copper pipe underground installation in a vertical direction and horizontal installation in a lake in a conventional direct expansion geothermal heating / cooling system. To do. This is accomplished by providing a wide, heavy and elongated containment assembly (compared to the borehole / well diameter). The containment assembly includes a containment tube having a flat top end and a circular or conical bottom end, and a copper tube and a grout pump tube are inserted into the containment tube as the containment tube is lowered into the well / borehole. . With this configuration, the installer can easily pull out the loosely attached grout pump pipe from the housing pipe without damaging the refrigerant transport copper pipe. Such a containment assembly has dimensions similar to a torpedo in the preferred embodiment, and can sometimes be referred to as a “torpedo” design.

  The containment assembly of the present invention is made of steel, PCV, copper, metal, plastic, etc. and is comprised of a containment tube or the like that is longer than wide. The receiving tube has a body portion having a flat upper end. For example, when used in a 4.5 inch diameter well / bore hole, the width of the body portion is preferably in the range of 2.5 inches to 3 inches for use in larger diameter wells / bore holes. Can be larger, preferably with a diameter difference of at least 1 inch. The length of the containment tube is at least longer than the width of the well / borehole. Thereby, it can prevent that a storage pipe turns sideways in a well. This length should be at least longer than the U-shaped portion of the refrigerant transport copper tube and reach a desired weight when combined with the contents. The total weight of the receiving tube is preferably in the range of 10 pounds to 40 pounds. The heavier the container (25 to 40 pounds), the easier it is to install a copper tube in a well filled with water. The lighter the containment tube (10 pounds to 20 pounds), the easier it will be to pull out the copper tube for any necessary repairs by pressure testing prior to grouting.

  The receiving tube of the present invention preferably has at least one of a main body portion having a relatively constant diameter and a circular protrusion and a conical protrusion extending from the base of the main body portion of the receiving tube. A conical protrusion is preferred because it helps guide the containment tube over any rock ledge. The conical protrusion also makes it easier to accommodate any underground material that may partially or completely enter the well or borehole, depending on the weight of the containment assembly and its associated / attached refrigerant transport tube. To be able to break through. The U-shaped portion of the copper tube within the receiving tube should be located at least 1 inch, preferably 2 inches above the base of the body portion of the receiving tube. Thereby, even if a circular protrusion part or a conical protrusion part is damaged, a refrigerant | coolant transport pipe is not damaged.

  The tip of the refrigerant transport tube is disposed within the containment tube and may optionally include a heated mode pin restrictor assembly, as will be appreciated by those skilled in the art. At least one, preferably two eyebolts, etc. are arranged so that the circular eyebolt end of each eyebolt extends slightly above the top edge of the receiving tube, but only to the extent that it extends slightly above To the extent that a wire, line or other fastening means extending across the upper edge of the receiving tube can be barely inserted through the circular end of the eyebolt. By using eyebolts, the grout pump pipe can be fixed to the receiving pipe, and the lower tip of the grout pump pipe can be held within the inner shell of the main body of the receiving pipe. In order not to damage it, the grout pump tube can be easily pulled and loosened. For this reason, it is necessary to leave a sufficient space above the internal space of the housing pipe to fit the refrigerant transport pipe and the grout pump pipe. For example, 1 to 2 inches should be left above the interior of the containment tube (so that the top is not filled with a flat grout).

  An optional second eyebolt or the like is placed near the upper end of the receiving tube at a position that does not interfere with the insertion of the grout pump tube around the first eyebolt. For example, a second eyebolt, which may be an 1.25 inch long eyebolt, is optionally used to secure a rope, line, wire, chain, etc. to the receiving tube, and the receiving tube and its attached refrigerant Used to control the descent of the transport and grout pump pipes into the well and / or to raise the assembly in or out of the well and prepare for grout injection. For example, during a pressure test prior to grouting, if a leak is detected, a rope can be used to help pull the entire containment assembly to a position where there is a leak and is repaired. The rope can then be used to bring the assembly back down into the well.

  After the refrigerant transport pipe and its U-shaped part are inserted into the receiving pipe, and the eyebolts are fixed in place (with each eyebolt hanging over the upper end of the receiving pipe by a hard wire or the like), concrete, cement, grout 111, etc. To fill the remainder of the interior space of the containment tube to a point approximately 1 to 2 inches from the top. The containment tube covers most of at least the lower part of the eyebolt, including the lower tip of the nut or bent eyebolt, in such a way that the threaded end of the eyebolt is securely fastened to the cementitious grout or other filler. Filled to a point of sufficient height. The filler fills the entire remaining volume of the containment tube, including the circular or conical protrusions, except for an approximately 1 to 2 inch portion near the upper end of the containment tube. Thereby, when the assembly is lowered into the well, sufficient space is left in the receiving tube so that the lower tip of the grout pump tube is fully protected.

  The cement-based filler has a flat surface near the upper end of the housing tube. This is because the bottom plate of the well / borehole is in the cylindrical space without the well / borehole contents, with the flat plate for moisture in case the water is naturally generated in the well and the grout beyond the top of the containment tube Provides a flat plate for pushing the heavy grout well / borehole filler when added from top to bottom. This design uses the weight of the grout on the top plane of the containment tube near the bottom of the well and uses the additional weight added to the containment tube filled with grout around the liquid line section. A coolant transport tube, optionally connected to a coolant transport tube wrapped with insulation, prevents levitation from a well filled with water, and when a grout / filler is added and cured , To prevent levitation from the well.

  It is beneficial to periodically install underground geothermal heat exchange refrigerant transport pipes at or in the bottom of lakes, rivers, bays, streams, waterways, seas, etc. In such locations, when heat is recovered by the DX heating / cooling system, the amount of water is generally large enough not to freeze to the bottom, and the heat is drained to the bottom during cooling mode operation. There is a sufficient amount of water so that it does not evaporate due to heat, and it is possible to provide excellent geothermal exchange without the need to drill a well / borehole. In such an application, it is preferable that the eyebolt for attaching the rope is disposed at the lower tip of the protruding portion of the receiving tube. Alternatively, a small-diameter hole that is large enough to pass through a rope such as a wire rope, nylon rope, or plastic rope can be provided so as to penetrate the conical protrusion of the receiving tube. The rope is used to pull the containment tube and its attached transport line into place. In such installation, the storage pipe serves to pull the refrigerant transport pipe and put it in a predetermined position, and also serves to support the tip of the refrigerant transport pipe in a predetermined position by the weight of the container.

  Further, in some cases, a rope / line or the like may be attached through an eye bolt or a small-diameter hole formed at the end of the conical protrusion of the receiving tube. This rope / line is attached to a float, such as a boy, and serves as an indicator of the underground position of the containment assembly and helps access the assembly if desired for movement or repair.

FIG. 4 is a cut-away side view of one embodiment of a containment assembly of the present invention showing a containment tube having a body portion with a conical protrusion and a flat top end installed in a well / borehole. The containment assembly has an attached liquid and gas refrigerant transport line, a grout pump tube attached to an eyebolt extending from a grout filler in the containment tube, and an attached rope.

Shows an extended small-diameter liquid refrigerant transport line and an extended large-diameter gas refrigerant transport line, a grout pump pipe attached to the first eyebolt by a wire, and a rope tied to an optional second eyebolt FIG. 3 is a top view of the containment assembly of the present invention.

FIG. 4 is a side view of an embodiment of the storage assembly of the present invention, wherein the storage tube in the storage assembly has a circular protrusion.

FIG. 6 is a side view of one embodiment of the containment assembly of the present invention disposed in the lake water and having a ring at the tip of the conical protrusion of the containment tube. The ring is utilized to draw and place the containment tube, and its installed attached liquid and gas refrigerant transport tubes, in place at or in the bottom of the lake. Also, as shown, an optional line is attached to the ring and extends to the float to mark the location of the containment assembly on the surface of the lake.

1 is a side view of one embodiment of the containment assembly of the present invention disposed in lake water. FIG. In the containment assembly, a small diameter hole is drilled in the protrusion of the containment tube, and this small diameter hole provides an optional attachment point for the rope and / or landmark.

  Reference will now be made in detail to the drawings. In the drawings, like parts or like components are given like reference numerals. FIG. 1 shows a cut-away side view of one embodiment of a containment assembly 1 that comprises a containment tube 2 having a conical protrusion 3 extending from a base 10 of a body portion. In the present invention, the main body portion (length direction 36) of the receiving tube 2 is substantially cylindrical and is formed of a steel, copper, metal, or plastic pipe. As will be appreciated by those skilled in the art, the receiving tube 2 need not necessarily be cylindrical. For example, the receiving tube 2 may be a multi-flat sided or the like (although not shown in the present specification, the all-plane tube is well understood by those skilled in the art). Since the body portion of the containment tube 2 is longer than the width 37 of the well / bore hole 21, the containment assembly 1 cannot be turned sideways when installed in the well / bore hole 21. The well / borehole 21 is excavated / digged into the ground 41 by a drilling method that is well understood by those skilled in the art.

  The conical protrusion 3 of the receiving tube 2 is preferably about 6 inches long to reach a point on the bottom end 4. The conical protrusion 3 can be attached to the body part of the receiving tube in such a way that the conical protrusion 3 can be separated from the body part during installation. The tip of the liquid refrigerant transport line 5 is shown in the form of a U-shaped portion 8 at a point on the length 27 of about 2 inches from the flat base 10 of the body portion of the receiving tube 2. The liquid refrigerant transport line 5 is attached to the gas refrigerant transport line 6 by a joint 29, all of which are in the receiving tube 2. The upper end 7 of the receiving tube 2 is flat. The tip or bottom 9 (U-shaped portion 8) of the transport line is preferably located at a length 27 (not drawn to scale herein) of about 2 inches from the base 10 of the receiving tube 2. . Thereby, even if the conical protrusion 3 is broken during insertion into the well / bore hole 21, the U-shaped portion 8 is not damaged. The containment assembly 1 is shown here disposed at the lower end 22 of the well / borehole 21. The well / borehole 21 is drilled / digged into the ground 41 by a drilling / digging method as is well understood by those skilled in the art.

  In the embodiment of FIG. 1, a first eyebolt 11 is shown having a round head 12 that extends slightly above the upper end 7 of the receiving tube 2. The first eyebolt 11 is used as a means for fixing the lower tip 13 of the grout pump tube 14 to the housing assembly 1. The grout pump tube 14 is a polyethylene tube that is conventionally used to inject the grout / filler 15 into the geothermal well / bore hole 21, as is well understood by those skilled in the art. The lower part of the eyebolt 11 including the nut 32 is completely disposed in the grout / filler 15 to secure the eyebolt 11 in place. The grout pump tube 14 is such that the entire lower tip 13 is in the upper interior 18 of the containment tube 2 that is not filled with the grout / filler 15 so that the first eyebolt 11 is on the grout / filler 15. It is preferably arranged around or above the extended part. Small diameter holes 17 are drilled on both sides of the grout pump tube 14 so that a wire 19 or the like can be inserted into the small diameter hole 17 in a manner that extends through the round head 12 of the first eyebolt 11. And when lowering the containment assembly 1 to the well 21, the wire 19 is bent around the grout pump pipe 14 to hold the grout pump pipe 14 in place, but during the grout injection process the grout pump pipe When pulling or unloading 14 from the containment assembly 1, it is easily cut or sagged, so that neither the liquid refrigerant transport line 5 nor the gas refrigerant transport line 6 is damaged.

  The optional second eyebolt 23 is shown in the same manner as the first eyebolt 11 and is disposed in the receiving tube 2, but the grout pump tube 14 or the liquid refrigerant transport line 5 and the gas refrigerant transport line 6 are shown. It arrange | positions in the position 31 which does not interfere with any of these. An optional rope 24 such as a nylon rope, wire rope or the like is attached to the round head 12 of the second eyebolt 23 and extends through the well 21 to a point on the ground 25. To assist in raising and lowering the containment assembly 1 and its additionally attached grout pump pipe 14 and refrigerant transport lines 5 and 6 in the well / borehole 21, any rope at a point on the ground It can be attached to a winch or the like (not shown herein, which is well understood by those skilled in the art).

  As shown, the remainder of the interior of the containment tube 2 is cemented with a grout / filler 15 (such as Grout 111) up to a point about 2 inches long 27 of the upper end 7 of the containment tube 2. Grout is preferred), leaving a space for the lower tip 13 of the grout pump tube 14 so that it fits perfectly with the upper interior 18 of the containment tube 2. This protects the lower tip 13 of the grout pump pipe 14 from being damaged or scratched when the grout pump pipe is lowered to the well 21. A grout / filler 15, preferably a cementitious grout such as Grout 111, becomes a flat surface 26 at a point about 2 inches long 27 at the upper end 7 of the receiving tube 2. If the well 21 contains natural water fill (natural fill water is well understood by those skilled in the art, but not shown here), the plane 26 is a liquid line. Along with any thermal insulation 33 around 5, the containment assembly 1 and its additionally attached refrigerant transport lines 5 and 6 provide resistance to prevent the well 21 from floating. The flat surface 26 also helps to prevent the containment 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 cement-type grout such as Grout 111 has a shrink resistance, a crack resistance, a water resistance and a high thermal conductivity as compared with other conventional grouts, and is therefore preferable as a filler for the containing tube 2. Also, Grout 111 is relatively heavy, about 18.5 pounds per gallon (more than twice the weight of water), thus eliminating any water that naturally occurs in the well / borehole 21.

  FIG. 2 is a top view of the containment assembly 1, which comprises a small diameter liquid refrigerant transport line 5, a large diameter gas refrigerant transport line 6, and a first eyebolt 11 within the containment tube 2 for protection purposes. An optional second eyebolt 23 for optionally assisting the lifting and / or lowering of the entire grout pump tube 14, the housing assembly 1, attached to the first eyebolt 11 by a wire 19 that secures the grout pump tube 14 to the first eyebolt 11. And a rope 24 fixed to 30.

  FIG. 3 is a side view of another embodiment of the housing assembly 1, and the housing tube 2 in the housing assembly 1 has a circular protrusion 28.

  FIG. 4 is a side view of the storage assembly 1 and another embodiment of the storage tube 2 having a ring 34 at the lower tip 13 of the conical protrusion 3. As will be appreciated by those skilled in the art, ring 34 may be an eyebolt, hook, U-bolt, and the like. The ring 34 is used to provide an optional attachment point for the rope 24, such as a wire rope, nylon rope, etc., as will be appreciated by those skilled in the art. In this particular application, the rope 24 pulls the containment assembly 1 and the installed liquid refrigerant transport line 5 and gas refrigerant transport line 6 installed, and the lake 35, river, bay, sea surrounded by the ground 41. Are used for placing them at the bottom 9 or in place within them. In such an installation in the lake 35, a grout pump pipe is not required.

  As shown, the optional line 38 is also attached to the ring 34 in the embodiment of FIG. 4 and extends to a float 39 such as a boy and the location of the containment assembly 1 on the water surface 40 of the lake 35. It is a sign of.

  FIG. 5 is a side view of the housing assembly 1, and the housing tube 2 in the housing assembly 1 has a small-diameter hole 17 or the like formed in the conical protrusion 3. The small diameter hole 17 will be used to provide an optional attachment point for the rope 24, such as a wire rope, nylon rope, etc., as will be appreciated by those skilled in the art. In this particular application, the rope 24 pulls the containment assembly 1 and its installed liquid refrigerant transport line 5 and gas refrigerant transport line 6, and the lake 35, river, bay, sea surrounded by the ground 41. Are used for placing them at the bottom 9 or in place within them. In such a lake 35 installation, a grout pump tube (not shown but well understood by those skilled in the art) is not required.

  Also, as shown in FIG. 5, an arbitrary line 38 is attached to the small-diameter hole 17, extends to a float 39 such as a boy, and the position of the containment assembly 1 on the water surface 40 of the lake 35. It is marked.

  Thus, although a specific embodiment of the present invention has been described for a containment assembly for underground placement of a refrigerant tube in a new and useful direct exchange heating / cooling system, such reference refers to the following claims. It is not intended to be construed as limiting the scope of the invention, except as described in the scope.

DESCRIPTION OF SYMBOLS 1 Housing assembly 2 Housing pipe 3 Conical protrusion 5 Liquid refrigerant transport line 6 Gas refrigerant transport line 7 Upper end part 8 U-shaped part 10 Base 11 First eyebolt 14 Grout pump pipe 15 Grout / filler 17 Small diameter hole 21 Well / Borehole 23 Second Eye Bolt 28 Circular Protrusion 34 Ring 38 Line 39 Float

US Pat. No. 5,623,986 US Pat. No. 5,816,314 US Pat. No. 5,946,928 US Pat. No. 6,615,601

Claims (26)

A containment assembly for installing a refrigerant pipe underground in a direct exchange heating / cooling system,
With a containment tube,
A receiving assembly, wherein the receiving tube has a flat upper end, a body portion having a base, and at least one of a circular protrusion or a conical protrusion extending from the base of the body portion.   The containment assembly according to claim 1, further comprising a refrigerant tube disposed within the containment tube and having a tip located proximate to or above the base of the body portion of the containment tube.   The housing assembly according to claim 2, further comprising a filler inside the housing pipe, wherein the filler houses at least one of the tip of the refrigerant pipe and the whole refrigerant pipe.   4. A containment assembly according to claim 3, further comprising grout pump tube attachment means for attaching the grout pump tube proximate to the upper end of the containment tube.   5. A containment assembly according to claim 4, further comprising a grout pump tube secured to the grout pump tube attachment means.   5. A containment assembly as claimed in claim 4, wherein the grout pump tube attachment means comprises a first eyebolt having an upper portion extending above the upper end of the containment tube and a lower portion inside the filler.   The containment assembly of claim 6, further comprising a second eyebolt having an upper portion extending above the upper end of the containment tube and a lower portion within the filler.   8. The containment assembly of claim 7, further comprising at least one of a rope, a wire, and a chain attached to the upper portion of the second eyebolt.   The containment assembly according to claim 1, wherein the containment tube is vertically disposed within a borehole having a borehole diameter, and the body portion of the containment tube is longer than the borehole diameter.   4. The receiving assembly according to claim 3, further comprising rope connecting means attached to the protruding portion of the receiving tube.   11. A containment assembly according to claim 10, wherein the rope connection means comprises a nose ring.   The receiving assembly according to claim 10, further comprising a line having a proximal end and a distal end connected to the rope connecting means, wherein the line is composed of at least one of a rope, a wire, and a chain.   13. The containment assembly of claim 12, further comprising a float as a landmark connected to the proximal end of the line.   The containment assembly of claim 13, wherein the containment assembly is disposed in water.   The containment assembly of claim 3, wherein the filler comprises a cementitious grout.   16. A containment assembly according to claim 15, wherein the cementitious grout has a flat surface proximate to the upper end of the containment tube but below the upper end.   The containment assembly of claim 16, wherein the cementitious grout is composed of Grout 111.   The grout pump pipe further includes a hole portion penetrating both sides of the grout pump pipe, and further includes at least one of a release wire and a release line inserted through the hole portion of the grout pump pipe and the upper portion of the first eyebolt. A containment assembly according to claim 6.   19. The containment assembly of claim 18, wherein the release line or release wire is bent around the grout pump tube to releasably hold the grout pump tube in place when the containment assembly is lowered into place. An installation method for installing a refrigerant pipe underground in a direct exchange heating / cooling system,
(A) Arranging at least the tip of the refrigerant pipe inside the housing pipe having a flat upper end, a main body having a base, and at least one of a circular protrusion or a conical protrusion extending from the base of the main body. To do
(B) placing the containment tube in an underground position;
(C) An installation method comprising filling at least a part of the housing tube with a filler.   21. The installation method according to claim 20, further comprising releasably attaching the grout pump pipe to the receiving pipe, and delivering the filler to the receiving pipe using the grout pump pipe.   The installation method according to claim 21, further comprising: attaching a rope to the accommodation pipe; and arranging the accommodation pipe at an underground position using the rope.   The installation method according to claim 20, wherein the underground position is a well or a borehole.   The installation method according to claim 20, wherein the underground position is underwater.   The installation method according to claim 24, further comprising attaching a floating device as a mark to the receiving tube.   The installation of claim 21, further comprising attaching the first eyebolt to the receiving tube by embedding the lower portion of the eyebolt in the filler, and the grout pump tube is releasably attached to the upper portion of the first eyebolt. Method.

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