JPH10318689A - Method for executing heating medium container for bore hole type thermal storage apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an embedding execution of heating medium containers by dispersively disposing the containers made of a plurality of hollow piles, then returning to embed sediment in a peripheral edge of the containers in an air conditioner for pouring the medium in a plurality of bore holes formed in the ground to transfer and receive heat stored in the ground. SOLUTION: A periphery of a position to be embedded of heating medium containers in an underground thermal storage apparatus is partitioned by an earth retaining wall such as a sheet pile, and the ground is excavated in an amount corresponding to an embedding depth. Meanwhile, an assembly 16 obtained by coupling with reinforcements 14 in peripheries of the many heating medium containers 12 made of steel tubes or vinyl chloride pipes of closed-end cylindrical containers arranged along a shape of the position to be embedded is built on a surface ground parallel to the operation. Thereafter, the assembly 16 is hoisted down at the position to be embedded by a crawler crane, then upper openings of the containers 12 are covered, and jobbing site generating sediment E1 is returned to be embedded. And, the wall is removed, suitably compacted, and embedding execution of the containers 12 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a heat medium container in a borehole type heat storage device utilizing the ground as a heat storage unit.

[0002]

2. Description of the Related Art As a technology similar to a borehole type heat storage device, there is, for example, an underground heat storage device disclosed in Japanese Patent Application Laid-Open No. 8-18463. The underground heat storage device disclosed in this publication is installed in a building 3 built on top of a plurality of stakes 4 driven into the ground 1 using hollow portions 5 as shown in FIG. 5, for example. The air conditioner 6 and each hollow portion 5 are connected via the heat medium pipes 7a and 7b, and a heat medium is circulated through the hollow portion 5 as necessary to transfer heat to the ground 1. I have.

[0003] In other words, this device uses the heat capacity of the ground 1 to store heat so as to cover the heat demand of the building 3 throughout the season. In particular, a liquid such as water is preferable as a heat medium, and a cooling medium for cooling is used. It is used for such purposes.

[0004]

However, in this construction method, the hollow pile is inserted one by one into the ground after drilling the ground. Limited.

[0005] In addition, since backing is practically impossible with this type of insertion method, it is difficult to control the construction accuracy and the verticality of the hole wall.
If a gap is formed, the ground may be loosened, causing liquefaction and adversely affecting heat exchange efficiency.

Further, when the pile strength is low, there is a risk that the pile may be damaged due to the pressure at the time of insertion, and it is difficult to control the quality of individual piles. Special heavy equipment was required.

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide a method of installing a heat medium container in a borehole type heat storage device which enables the heat medium container to be buried in an economical and reliable manner. It provides a method.

[0008]

According to the present invention, a heat medium is injected into a plurality of boreholes formed in the ground, and the heat stored in the ground via the heat medium is solved by the present invention. In a borehole type heat storage device equipped with an air conditioner for sending and receiving, a required area is excavated, and a plurality of heat medium containers composed of a plurality of hollow piles or pile-like containers are dispersed and arranged in a predetermined arrangement inside the required area. It is characterized by burying earth and sand around the periphery.

Therefore, in the method of the present invention, the degree of freedom of arrangement of the heat medium containers is high, and the heat medium containers can be reliably installed.
In addition, the backfill soil improves the adhesion to the ground, and improves the heat exchange efficiency. Furthermore, there is a feature that a general basic machine can be used.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
FIG. 3 shows a construction procedure of the method of the present invention.

First, as shown in FIGS. 1A and 1B,
The surroundings of the buried position a of the heat medium container are partitioned by a retaining wall 10 such as a sheet pile, and the ground E is excavated by the buried depth.

On the other hand, in parallel with this operation, on the surface of the ground, as shown in (c), the periphery of the large number of heat medium containers 12 arranged along the shape of the planned burial position a is reinforced by reinforcing materials 14.
The assembled assembly 16 is constructed in advance.

Each heat medium container 12 is a bottomed cylindrical container, and is composed of a steel pipe, a PVC pipe, or the like.

The diameter, vertical length, and number of each heat medium container 12 are designed so as to have a capacity sufficient to meet the heat demand according to the scale of a building (not shown) constructed in parallel with the heat medium container 12. Also, as the buried position a, an optimum position is selected in consideration of the positional relationship with the air conditioner installed in the building.

When the above operation is completed, FIG.
As shown in (a) and (b), the assembly 16 is hung to the embedding expected position a by a crawler crane 18 or the like.

Thereafter, as shown in FIG. 3, the upper opening of each heat medium container 12 is covered, and the earth and sand E1 generated at the site is backfilled. As the process progresses, the beams, ridges, etc. are sequentially removed, and then the retaining wall 10 and the like are removed and compacted by an appropriate compacting machine, so that a large number of heat medium containers 12 are continuously connected to the surrounding ground E. Then, it is buried in the soil, and the construction of the heat medium container 12 is completed.

Thereafter, as shown in FIG. 5, each of the heat medium containers 12 and the air conditioner are connected via a pipe to complete the borehole type heat storage device.

In the above-described embodiment, each of the heat medium containers 12 has a rectangular arrangement. However, the arrangement can be freely designed in accordance with optimization, such as a circular arrangement as shown in FIG. 4 or another spiral arrangement. it can.

[0019]

As is apparent from the above description, in the method for installing the heat medium containers in the borehole type heat storage device according to the present invention, the degree of freedom in the arrangement of the heat medium containers is high, and there is a risk of breakage. No, it can be installed reliably. In addition, the backfill soil improves the adhesion to the ground, and improves the heat exchange efficiency. Furthermore, there is a feature that a general basic machine can be used, and both material costs and construction costs are low.

[Brief description of the drawings]

FIG. 1A is a plan view showing an excavation step in the present invention. (B) is the same sectional view. (C) is a top view which shows the assembly of each heat medium container.

FIG. 2A is a plan view showing an assembled state of the assembly. (B) is the same sectional view.

FIG. 3 is a sectional view showing a backfilling step.

FIG. 4 is a plan view showing another arrangement shape of the heat medium container.

FIG. 5 is a schematic view of a conventional heat storage device using a hollow pile.

[Explanation of symbols]

 12 Heat medium container 14 Reinforcement 16 Assembly E Ground E1 Backfill soil

Claims (1)

[Claims] 1. A borehole type heat storage device having an air conditioner for injecting a heat medium into a plurality of boreholes formed in the ground and transmitting / receiving heat stored in the ground via the heat medium, In a borehole-type heat storage device characterized by excavating and disposing a plurality of heat medium containers composed of a plurality of hollow piles or pile-shaped containers in a predetermined arrangement inside thereof, and then backfilling the periphery of each heat medium container with earth and sand. Construction method of heat medium container.