JP5875796B2 - Heat exchanger and its installation method - Google Patents

Description

  The present invention relates to a heat exchanger that constitutes a geothermal heat pump system and is buried in the ground, and an installation method thereof.

  A geothermal heat pump system using geothermal heat has attracted attention from the viewpoint of energy saving and low environmental load. Such a geothermal heat pump system circulates a heat medium such as water, glycol or alcohol in a heat exchanger consisting of a heat exchange pipe buried in the ground, and exchanges this heat medium in the ground. By doing so, it takes heat from the ground and releases heat into the ground.

  Conventionally, a vertical burying method in which a heat exchanger is installed by excavating in the vertical direction at a depth of several tens to several hundreds of meters has been performed, but since the excavation cost is expensive, about 1 m to 3 m A horizontal burying method in which a heat exchanger is horizontally arranged by excavating in a flat shape at a depth of 5 mm is being studied. For example, in the horizontal burying method, a heat exchanger arranges a heat exchange pipe made of a resin pipe having flexibility in a predetermined pattern in a hole excavated at a required width and depth, and arranges the heat exchange pipe. It is installed in the ground by backfilling so as not to break the pattern. Here, since the heat exchange pipe is provided in a coiled state, the loops of the heat exchange pipe wound in the coil shape are spread so as to be shifted in order, and the loops of the heat exchange pipes are partly connected to each other. Arrangement patterns arranged so as to overlap each other are often employed because the heat exchange pipe can be efficiently laid. However, the diameter of each loop of the heat exchange pipe varies depending on the degree of curl in the coil state, and the strength and return amount of the curl also changes depending on the outside air temperature during construction. The length is affected by the time of construction and the contractor. If there are variations in the arrangement pattern and length of the heat exchange tubes, the required heat exchange efficiency cannot be ensured in the ground, and the underground heat pump system may not exhibit the desired performance.

  Accordingly, the heat exchanger disclosed in Patent Document 1 is provided with an identification portion provided at a predetermined interval on the tube, and fixed after the tube is aligned with a plurality of grooves provided on the nozzle so that the identification portion is linear. In addition, a plurality of loops continuing through the tube are arranged in a direction substantially parallel to the loop surface. Thus, the heat exchanger of patent document 1 keeps the arrangement | positioning pattern and length of a heat exchange pipe | tube constant by fixing a pipe | tube with a nozzle. Patent Document 1 also proposes another heat exchanger that supports a pipe by sandwiching an identification portion provided on the pipe at a predetermined position with a sheet-like fixing member from above and below.

JP 2010-185599 A

  The heat exchanger of Patent Document 1 can set the loop pitch of the tube only within the range of the interval of the groove portion provided in the nozzle, and is not easy to use because it cannot be a flexible tube arrangement pattern according to the site. Is bad. In addition, since the nozzle is long and has a structure capable of supporting the pipe, it is bulky and difficult to handle in transportation and installation work. In another heat exchanger disclosed in Patent Document 1, if the pipe is sandwiched and fixed by a sheet-like fixing member, the pipe cannot be replaced, so that the flexibility of construction is impaired, and this is also easy to use. bad. The work of fixing the pipe to the groove of the nozzle and the work of sandwiching the pipe with the sheet-like fixing member requires a certain amount of work space, and is particularly adapted to the vertical construction method in which the pipe loop surface is installed in a vertical posture. It is impossible to work in a narrow hole. If the heat exchanger is assembled by fixing the tube with a nozzle or sheet-like fixing member outside the hole, it will be difficult to handle because it will be large as a whole, and there is a possibility that the mount or sheet-like fixing member will be caught when installing in the hole is there.

  That is, the present invention has been proposed in view of the above-described problems inherent in the heat exchanger according to the prior art, and has been proposed to suitably solve these problems, and the heat exchange tube can be flexibly aligned. An object is to provide an exchanger and its installation method.

In order to overcome the above-mentioned problems and achieve an intended object, a heat exchanger according to claim 1 of the present application is
In heat exchangers used in underground heat pump systems and buried underground,
A heat exchange pipe arranged so that a plurality of continuous loops are arranged in a posture in which each loop surface is raised; and
Provided above the heat exchange pipe, and having a flexible embedded display tape and a holder for connecting the heat exchange pipe,
The holding tool detachably holds the heat exchange tube and a tape holding portion that changes from a holding state that holds the embedded display tape to an open state that is movable along the extending direction of the embedded display tape. A tube holding portion to
It said tape holding portion, and having a through hole for inserting the implants provided display tapes,
The tube holding portion has a holding space that matches the outer diameter of the heat exchange tube,
The penetration direction of the through hole and the penetration direction of the holding space intersect obliquely,
A plurality of the holders are spaced apart in the extending direction of the embedded display tape and disposed on the embedded display tape via the tape holding portion,
The gist of the invention is that the loops of the heat exchange tubes held by the tube holding part are aligned in a posture laid down with respect to the arrangement direction of the loops by adjusting the intervals of the plurality of holders.
According to the first aspect of the present invention, since the holder can be moved along the embedded display tape, the distance between the loops in the heat exchange pipe by the holder can be adjusted flexibly and easily. And since the loop of a heat exchange pipe | tube is appropriately aligned with a holder, the heat exchanger can implement | achieve heat exchange as designed. Moreover, since the embedment display tape embedded above the heat exchange tube for the embedment display of the heat exchanger is used as a reference for adjusting the interval between the plurality of holders, the number of parts can be minimized. .

In the invention according to claim 2, the tape holding portion is formed with an outer shell portion having the through-hole and an insertion port that can be aligned with the through-hole, and can be displaced vertically with respect to the outer shell portion. A supported locking portion, a spring that biases the locking portion upward, and an outer portion that penetrates through the upper portion of the outer shell and faces the locking portion against the biasing force of the spring. An operation unit that can be operated downward,
In the holding state, the upper and lower overlapping dimensions of the through hole and the insertion hole are smaller than the thickness of the embedded display tape due to the biasing force of the spring,
In the released state in which the operating portion is operated downward against the urging force of the spring, the upper and lower overlapping dimensions of the through-hole and the insertion opening are increased to allow passage of the embedded display tape. Is the gist .

The gist of the invention according to claim 3 is that the tube holding portion is attached to the upper end portion of the loop.
According to the invention of claim 3 , the holder is attached to the upper end of the loop of the heat exchange pipe even when the groove is excavated with a narrow width corresponding to the heat exchange pipe installed in a posture in which the loop surface is raised. Therefore, the holder is unlikely to interfere with the groove, and the loop can be properly aligned.

  The gist of the invention according to claim 4 is that the heat exchange tubes are aligned by the holder so that adjacent loops do not contact each other.
  According to the invention which concerns on Claim 4, since it aligns with a holder so that the adjacent loop of a heat exchange tube may not contact, the contact area with soil can be earned and it can heat-exchange efficiently.

  In order to overcome the above-mentioned problems and achieve the intended purpose, the heat exchanger installation method of the invention according to claim 5 of the present application,
  A method for installing a heat exchanger used in a geothermal heat pump system,
  A heat exchange pipe arranged so that a plurality of continuous loops are arranged excavates a groove that can be installed with the loop surface of the loop upright,
  The heat exchange tube wound in a coil shape is shifted in a direction parallel to the loop surface, and the heat exchange tube is arranged in the groove so that a plurality of continuous loops are arranged,
  The embedded display tape inserted through the through holes provided in the plurality of holders and movably attached to the plurality of holders is installed above the heat exchange pipe installed in the groove,
  It is formed in a direction obliquely intersecting with the through direction of the through hole, and has a holding space having a shape that matches the outer shape of the heat exchange tube, and is disposed on the embedded display tape at predetermined intervals. By inserting the heat exchange pipe into the holding space of the holder through an opening provided in the lower part of the holder, the holder is attached to the upper end of the loop in the heat exchange pipe, and a plurality of loops Aligned the loop surface of each loop with the laying posture with respect to the alignment direction
This is the gist.
  According to the invention which concerns on Claim 5, since a holder can be moved along an embedding display tape, the space | interval adjustment of the loop in a heat exchange pipe | tube by a holder can be performed flexibly and easily. And since the obtained heat exchanger aligns the loop of a heat exchange pipe appropriately with a holder, it can realize heat exchange as designed. In addition, since the embedment display tape embedded above the heat exchange tube for the heat exchanger embedment display is used as a reference for adjusting the interval between the plurality of holders, the construction labor for arranging the holders is reduced. Can be suppressed.

  The heat exchanger according to the present invention can flexibly align the heat exchange tubes. Moreover, according to the installation method of the heat exchanger which concerns on this invention, position alignment of a heat exchange pipe | tube can be performed flexibly and the heat exchange pipe | tube of a suitable arrangement | positioning pattern can be installed easily.

1 is a side view of a heat exchanger according to a preferred embodiment of the present invention. It is a top view of the heat exchanger of an Example. It is a front view of the holder of an Example, (a) shows the holding state of the embedded display tape, (b) shows the released state of the embedded display tape. It is a top view of the heat exchanger of the example of a change.

  Next, a heat exchanger according to the present invention and a method for installing the heat exchanger will be described below with reference to the accompanying drawings by way of preferred embodiments.

  As shown in FIG. 1 or 2, the heat exchanger 10 of the embodiment includes a heat exchange pipe 12 arranged so that a plurality of continuous loops 12 a are arranged, and the heat exchange pipe 12 and the heat exchange pipe 12. And a holding tool 14 for connecting an embedded display tape T embedded so as to extend upward. The heat exchange tube 12 has flexibility, and a tube that can be bent into a circular arc shape or stretched linearly by hand is adopted. The heat exchange tube 12 may be any material having flexibility and appropriate thermal conductivity, and a synthetic resin such as vinyl chloride, polyethylene, polypropylene, polybutene, and crosslinked polyethylene, or a composite tube made of metal and resin is used. Polyethylene is preferable from the viewpoint of cost, strength, corrosion resistance, and the like.

  The embedded display tape T is laid between the ground surface and the heat exchanger 10, and when the installation site of the heat exchanger 10 is excavated, the embedded display tape T appears before the heat exchange pipe 12. The purpose is to avoid damage to the exchange tube 12. The embedded display tape T is a band made of a synthetic resin such as polyethylene that is hard to be corroded, and has flexibility that can be arbitrarily bent, and can be stored and carried in a rolled state. The embedded display tape T is laid along the arrangement direction N (see FIG. 2) of the plurality of loops 12a in the heat exchange tube 12.

  As shown in FIG. 3, the holder 14 includes a tape holding unit 16 that holds the embedded display tape T and a tube holding unit 24 that holds the heat exchange tube 12, and the embedded display tape held by the tape holding unit 16. The vertical distance between T and the heat exchange tube 12 held by the tube holding unit 24 is defined. The tape holding portion 16 is provided with an outer shell portion 18 provided with a through-hole 18a through which the embedded display tape T can be inserted, and an insertion port 20a aligned with the through-hole 18a of the outer shell portion 18. And a locking portion 20 supported so as to be displaceable in a direction (vertical direction) intersecting the penetrating direction of the through hole 18a. The tape holding portion 16 is configured to elastically urge the locking portion 20 upward by a spring 22 provided between the outer shell portion 18 and the locking portion 20. The locking part 20 is provided with an operating part 20b that penetrates the upper part of the outer shell part 18 up and down and faces outward, and the operating part 20b operates the locking part 20 downward against the bias of the spring. it can.

  In the free state in which the locking portion 20 is urged upward by the spring 22, the tape holding portion 16 is displaced from the through-hole 18 a of the outer shell portion 18 and the insertion port 20 a of the locking portion 20 upward. The upper and lower overlapping dimensions of 18a and the insertion opening 20a are configured to be smaller than the thickness of the embedded display tape T (see FIG. 3A). Further, in the tape holding portion 16, the upper and lower overlapping dimensions of the through hole 18 a and the insertion port 20 a become large in the operation state of the locking portion 20 in which the operation portion 20 b is pressed downward against the bias of the spring 22. The through hole 18a and the insertion hole 20a are aligned to such an extent that the embedded display tape T can pass through (see FIG. 3B). As described above, the state of the tape holding unit 16 changes from a holding state in which the embedded display tape T is held by a fingertip operation of the operation unit 20b to a released state in which the tape can be moved along the extending direction of the embedded display tape T. The operating portion 20b is configured to return to the holding state by the spring 22 in a free state.

  As shown in FIG. 3, the tube holding portion 24 is provided below the outer shell portion 18 in the tape holding portion 16. The tube holding portion 24 is formed in an annular shape having a holding space 24a that matches the outer shape of the heat exchange tube, and a lower portion is cut away, and an insertion / removal opening 24b through which the heat exchange tube 12 can be inserted into and removed from the holding space 24a is provided. ing. The insertion / removal opening 24b is set to be smaller than the diameter of the heat exchange tube 12 fitted to the tube holding portion 24. The tube holding portion 24 is configured to be elastically deformable, and can be deformed so as to be separated from a normal state in which the opposing one portions across the insertion / removal opening 24b are aligned with the outer shape of the heat exchange tube 12. Yes. The tube holding portion 24 expands and removes the piece from the heat exchange tube 12 to the holding space 24a via the insertion / removal opening 24b, and the heat exchange tube accommodated in the holding space 24a in the normal state of the piece. 12 is fixed. The holder 14 has the tape holder 16 and the tube holder 24 fixed thereto, and the through hole 18a in the tape holder 16 is matched to the angle of the loop surface L of the heat exchange tube 12 with respect to the extending direction of the embedded display tape T. The direction of the holding space 24a in the tube holding part 24 with respect to the direction is set. In the embodiment, since the loop surface L of the heat exchange tube 12 is set to intersect at a predetermined angle with respect to the extending direction of the embedded display tape T, with respect to the through direction of the through hole 18a in the tape holding unit 16, The penetration direction of the holding space 24a of the tube holding part 24 intersects at a predetermined angle.

  In the heat exchanger 10, the heat exchange pipe 12 is installed so that a plurality of loops 12a are in a posture in which the loop surface L stands, and the adjacent loops 12a and 12a are shifted from each other in a direction parallel to the loop surface L. Are lined up. Moreover, although the heat exchange pipe | tube 12 is arrange | positioned so that adjacent loops 12a and 12a may mutually overlap in the arrangement direction N, it adjoins so that adjacent loops 12a and 12a may not contact. The heat exchange pipe 12 can reduce the installation space of the heat exchange pipe 12 by arranging adjacent loops 12a and 12a so as to partially overlap, but if the heat exchange pipes 12 are closely packed, heat exchange in the ground Since the efficiency is lowered, it is preferable to make the overlapping portion of the loops 12a less than half of the adjacent loops 12a. Further, even if the heat exchange tubes 12 constituting the loop 12a are not in direct contact with each other, the heat exchange efficiency is reduced by approaching them. It is preferable that there are few approaching parts of the heat exchange tubes 12 during one period returning to the upper end. Specifically, in the heat exchanger 10, it is preferable that the total of the intersections where the loops 12a overlap in the horizontal direction and the points adjacent to each other in the arrangement direction N (approach points) not overlap in the horizontal direction is 11 or less. 7 or less is preferable, and in particular, the intersection is 5 or less and there is no approach point.

  The heat exchange pipe 12 is disposed so that the loop surface L of each loop 12a intersects the arrangement direction N of the plurality of loops 12a. Here, when the loop surface L is in a posture laid down with respect to the arrangement direction N (an angle is set shallow), the width of the groove 26 excavated for installing the heat exchanger 10 can be reduced. Then, the heat exchanger 10 separates the plurality of holders 14 in the extending direction of the embedded display tape T and disposes the plurality of holders 14 on the embedded display tape T via the tape holding unit 16. The loop 12a of the heat exchange tube 12 that is adjusted and held by the tube holding unit 24 is configured to be aligned. That is, in the heat exchanger 10, the arrangement pattern such as the pitch of the loops 12a in the heat exchange tube 12, the angle of the loop surface L, and the non-contact state of the adjacent loops 12a and 12a, etc. It is defined by the holding of the holder 14.

  Next, the installation method of the heat exchanger 10 mentioned above is demonstrated easily. The groove 26 is excavated by an excavating machine such as a trencher used for laying a backhoe or dark pipe. Here, the groove | channel 26 is excavated by the minimum width | variety matched with the arrangement pattern of the heat exchange pipe | tube 12 to install. That is, by installing the heat exchange pipe 12 in a posture in which the loop surface L is set up, the width of the groove 26 can be made narrower than in the case where the loop surface L is laid down. Can be suppressed. The heat exchange tube 12 wound in a coil shape is extended while being shifted in a direction parallel to the winding surface, the heat exchange tube 12 is disposed in the groove 26, and the loop surfaces L of a plurality of continuous loops 12a are erected. The adjacent loops 12a and 12a are arranged so that a part of them overlap. Since the groove 26 has a minimum width in accordance with the arrangement pattern of the heat exchange pipe 12, the heat exchange pipe 12 can be leaned against the wall of the groove 26 to maintain the upright posture, and support for the pillars and the like can be maintained. Not particularly necessary. In addition, as described above, the heat exchange tube 12 can be easily made independent by arranging the loop surface L at a predetermined angle with respect to the arrangement direction N of the plurality of loops 12a. it can.

  An embedded display tape T to which a plurality of holders 14 are attached via a tape holder 16 is disposed above the groove 26 (heat exchange tube). The embedded display tape T is in a state of being stretched by pressing its end with a weight such as a sandbag. The embedded display tape T is provided in a state of being wound in a roll shape, and the holder 14 is attached in accordance with the arrangement pattern of the heat exchange tubes 12 at the site. By attaching the upper end portion of the loop 12a of the heat exchange tube 12 to the holder 14 disposed at predetermined intervals on the embedded display tape T via the tube holding portion 24, the pitch of the loop 12a in the heat exchange tube 12 and The non-contact state of the adjacent loops 12a, 12a is defined by the positional relationship of the plurality of holders 14 spaced from the embedded display tape T. Further, the angle of the loop surface L of each loop 12a is defined by the relationship between the direction of the through hole 18a of the tape holding unit 16 and the direction of the holding space 24a of the tube holding unit 24, and is held with respect to the direction of the through port 18a. Since the direction of the space 24a intersects, the loop surface L is defined by an angle that intersects the arrangement direction N of the loops 12a. Here, the plurality of holders 14 may be adjusted in intervals before being installed in the groove 26 with reference to a scale (not shown) attached to the embedded display tape T at regular intervals. The interval can be adjusted later. And the heat exchanger 10 by which the arrangement pattern of the heat exchange pipe | tube 12 was prescribed | regulated appropriately as a design is obtained by refilling the groove | channel 26. FIG.

  Since the heat exchanger 10 can move the holder 14 along the embedded display tape T, the distance between the loops 12a in the heat exchange pipe 12 by the holder 14 can be adjusted flexibly and easily. In addition, the holder 14 is attached to the upper end of the loop 12a of the heat exchange pipe 12 even if the groove 26 is excavated with a narrow width corresponding to the heat exchange pipe 12 installed with the loop surface L upright. The holder 14 does not easily interfere with the groove 26, and the loop 12a can be properly aligned. And since the loop 12a of the heat exchange pipe | tube 12 is appropriately aligned with the holder 14, the heat exchanger 10 can implement | achieve heat exchange as designed. Since the adjacent loops 12a and 12a are separated from each other by the holders 14 and 14 adjacent to each other in the embedded display tape T, the heat exchanger 10 prevents heat exchange between the loops 12a, and the soil and the heat exchange pipe 12 Heat exchange can be performed efficiently by increasing the contact area. Further, since the embedded display tape T embedded above the heat exchange pipe 12 for the embedded display of the heat exchanger 10 is used as a reference for adjusting the interval between the plurality of holders 14, the number of parts is minimized. Can be suppressed.

  According to the installation method of the heat exchanger 10, since the holder 14 can be moved along the embedded display tape T, the distance between the loops 12a in the heat exchange pipe 12 by the holder 14 can be adjusted flexibly and easily. be able to. Moreover, the adjacent loops 12a and 12a are separated by the holders 14 and 14 adjacent to each other in the embedded display tape T, and the angles of the loop surfaces L can be adjusted simultaneously. Since the embedded display tape T is provided in a rolled state, it is not bulky and can be bent arbitrarily, so it is easy to handle, and the attachment work of the holder 14 and the installation work of the embedded display tape T can be easily performed. Can do. Further, since the holder 14 is attached to the upper end portion of the loop 12a of the heat exchange tube 12, the holder 14 is unlikely to interfere with the groove 26, and the width of the groove 26 needs to be increased in order to attach or adjust the position of the holder 14. The groove 26 can be excavated with a narrow width corresponding to the heat exchange pipe 12 installed with the loop surface L upright. The required number of holders 14 can be attached to the embedded display tape T in the field according to the arrangement pattern of the heat exchange tubes 12. Further, since the embedded display tape T embedded above the heat exchange tube 12 for the embedded display of the heat exchanger 10 is used as a reference for adjusting the interval between the plurality of holders 14, the holder 14 is disposed. Therefore, the labor for construction can be reduced.

(Change example)
The present invention is not limited to the above-described embodiment, and can be modified as follows, for example.
(1) As shown in FIG. 4, the heat exchange pipe 12 is installed with the loop surface L lying down, and the embedded display tape T and the heat exchange pipe 12 extending above the heat exchange pipe 12 are held. The heat exchanger 30 connected by the tool 14 may be used.
(2) The holder may be provided with a plurality of tube holders with respect to the tape holder. That is, as shown in FIG. 4, adjacent heat exchange tubes 12 may be aligned with one holder 32.
(3) The tape holding portion is not limited to the configuration of the embodiment, and may be, for example, a clip shape sandwiching the embedded display tape as long as the holder can be positioned or released with respect to the embedded display tape.
(4) The tube holding portion is not limited to the configuration of the embodiment, and may be, for example, a clip shape that sandwiches the heat exchange tube as long as it can hold the heat exchange tube.
(5) A structure in which a support is provided between the tape holding part and the pipe holding part and the embedded display tape is separated from the heat exchange pipe by a predetermined distance can also be adopted as the holder.
(6) You may provide the short spacer which prescribes | regulates the space | interval of the adjacent heat exchange pipe | tube separately from a holder.
(7) The holder may be configured such that the tube holding portion can be rotationally adjusted with respect to the tape holding portion, and the angle of the loop of the heat exchange tube can be adjusted.

12 heat exchange tubes, 12a loops, 14, 32 retainer, 16 the tape holding portion,
18 outer shell part, 18a through-hole, 20 locking part, 20a insertion hole, 20b operation part,
22 spring, 24 tube holding part, 24a holding space, 24b insertion / removal opening (opening),
26 groove, L loop surface, T buried display tape, N alignment direction

Claims (5)

In heat exchangers used in underground heat pump systems and buried underground,
A heat exchange pipe arranged so that a plurality of continuous loops are arranged in a posture in which each loop surface is raised; and
Provided above the heat exchange pipe, and having a flexible embedded display tape and a holder for connecting the heat exchange pipe,
The holding tool detachably holds the heat exchange tube and a tape holding portion that changes from a holding state that holds the embedded display tape to an open state that is movable along the extending direction of the embedded display tape. A tube holding portion to
It said tape holding portion, and having a through hole for inserting the implants provided display tapes,
The tube holding portion has a holding space that matches the outer diameter of the heat exchange tube,
The penetration direction of the through hole and the penetration direction of the holding space intersect obliquely,
A plurality of the holders are spaced apart in the extending direction of the embedded display tape and disposed on the embedded display tape via the tape holding portion,
The heat exchange is configured to align the loops of the heat exchange tubes held by the tube holding portion in a posture laid down with respect to the arrangement direction of the loops by adjusting the intervals of the plurality of holders. vessel. The tape holding part is formed with an outer shell part having the through hole, an insertion part that can be aligned with the through hole, and a locking part supported to be displaceable in the vertical direction with respect to the outer shell part, A spring that urges the locking portion upward, and an operation portion that penetrates the upper portion of the outer shell portion and faces outward, and can operate the locking portion downward against the urging force of the spring; With
In the holding state, the upper and lower overlapping dimensions of the through hole and the insertion hole are smaller than the thickness of the embedded display tape due to the biasing force of the spring,
In the released state in which the operation portion is operated downward against the urging force of the spring, the upper and lower overlapping dimensions of the through hole and the insertion hole are increased to allow passage of the embedded display tape. Item 2. The heat exchanger according to Item 1. Before Symbol tube holding unit, the heat exchanger according to claim 1, wherein attached to the upper end of the loop. The said heat exchange pipe | tube is a heat exchanger as described in any one of Claims 1-3 aligned so that adjacent loops may not contact by the said holder. A method for installing a heat exchanger used in a geothermal heat pump system,
A heat exchange pipe arranged so that a plurality of continuous loops are arranged excavates a groove that can be installed with the loop surface of the loop upright,
The heat exchange tube wound in a coil shape is shifted in a direction parallel to the loop surface, and the heat exchange tube is arranged in the groove so that a plurality of continuous loops are arranged,
Is inserted into a through hole provided in a plurality of holders, the embedded display tape mounted movably said plurality of retainers, bridged above the heat exchange tubes disposed in said groove,
A holding space is formed in a direction obliquely intersecting with the through direction of the through hole, and has a shape matching the outer shape of the heat exchange tube, and is disposed in the embedded display tape at predetermined intervals. and retainer of the holding space by through an opening provided in the lower portion of the holder for inserting the heat exchange tubes, mounted the holder to the upper end of the loop in the heat exchange tubes, a plurality of loops A heat exchanger installation method characterized in that the loop surface of each loop is aligned in a laying posture with respect to the arrangement direction of the heat exchangers.

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