JP5145465B1 - Underground heat exchange system - Google Patents

Underground heat exchange system Download PDF

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JP5145465B1
JP5145465B1 JP2012009588A JP2012009588A JP5145465B1 JP 5145465 B1 JP5145465 B1 JP 5145465B1 JP 2012009588 A JP2012009588 A JP 2012009588A JP 2012009588 A JP2012009588 A JP 2012009588A JP 5145465 B1 JP5145465 B1 JP 5145465B1
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water
heat exchanger
heat
heat exchange
water supply
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JP2013137176A (en
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真司 高杉
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ジオシステム株式会社
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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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • 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
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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Abstract

【課題】限られた土地を有効に活用して、地中熱交換を行うことができる地中熱交換システムを提供する。
【解決手段】所定の透水性を有し、地中熱熱交換ユニット１２０が埋設される熱交換器設置溝１５０を建屋の下に配置して、外部から熱交換器設置溝１５０に水を供給する水供給手段３００を設けて、熱交換効率を高める。
【選択図】図１An underground heat exchange system capable of exchanging underground heat by effectively utilizing limited land is provided.
A heat exchanger installation groove 150 having a predetermined water permeability and in which the underground heat exchange unit 120 is embedded is arranged under the building, and water is supplied to the heat exchanger installation groove 150 from the outside. Water supply means 300 is provided to increase heat exchange efficiency.
[Selection] Figure 1

Description

本発明は、地中熱と熱交換させた熱媒体をヒートポンプサイクルに利用する地中熱交換システムに関し、さらに詳しく言えば、限られた土地を有効に利用して、地中熱交換を行うことができる地中熱交換システムに関する。
The present invention is a heat medium ground heat and is heat exchanged relates geothermal heat exchanger system that utilizes the heat pump cycle and, more particularly, by effectively utilizing the limited land, performing the underground heat exchanger The present invention relates to an underground heat exchange system that can

例えば、特許文献１に記載されている地中熱交換システムでは、地中に埋設された熱交換器に熱媒体を循環させる一次側熱交換回路と、空気調和機などの二次側熱交換回路とを有し、一次側熱交換回路と二次側熱交換回路とを互いに熱的に接続にして、二次側回路で発生した熱と地中熱とを熱交換するようにしている。
For example, in the land in a heat exchange system that is described in Patent Document 1, the primary side heat exchange circuit for circulating a heat medium in the heat exchanger embedded in the ground, the secondary heat exchange circuit such as an air conditioner And the primary side heat exchange circuit and the secondary side heat exchange circuit are thermally connected to each other so as to exchange heat between the heat generated in the secondary side circuit and the underground heat.

ところで、従来の熱交換システムは、地中熱との熱交換を行うための地中熱熱交換器を地中に設けられた熱交換器設置溝の中に埋めている。通常、熱交換器設置溝は、雨などの水が浸透することによって、熱交換効率が高められるため、屋外の地中内に設置されていることが多い。   By the way, the conventional heat exchange system has buried the underground heat exchanger for performing heat exchange with underground heat in the heat exchanger installation groove | channel provided in the underground. Usually, heat exchanger installation grooves are often installed outdoors in the ground because heat exchange efficiency is enhanced by the penetration of water such as rain.

しかしながら、この種の熱交換システムは、熱交換器設置溝を屋外に敷設するため、必然的に敷設用地が必要となる。そのため、都市部の住居や農業用ハウスなど土地が限られる場所においては、この熱交換システムを組み込むことは、困難であった。   However, since this type of heat exchange system lays the heat exchanger installation groove outdoors, an installation site is inevitably required. For this reason, it has been difficult to incorporate this heat exchange system in places where land is limited such as urban dwellings and agricultural houses.

特開２０１０−１９０４３５号公報JP 2010-190435 A

そこで、本発明の課題は、限られた土地を有効に活用して、地中熱交換を行うことができる地中熱交換システムを提供することにある。   Then, the subject of this invention is providing the underground heat exchange system which can utilize a limited land effectively and can perform underground heat exchange.

上述した課題を解決するため、本発明は、所定の熱媒体と地中熱との間で熱交換する地中熱熱交換器を有し、上記地中熱熱交換器にて熱交換された上記熱媒体をヒートポンプ装置との間でさらに熱交換し、上記ヒートポンプ装置を用いて所定の建屋の冷暖房および／または給湯を行う地中熱交換システムにおいて、上記地中熱熱交換器が埋設される熱交換器設置溝が上記建屋の下の透水性を有する地中内に細長いスリット状に形成されており、上記地中熱熱交換器として熱交換チューブを平面的に多列もしくは螺旋状に配設してなる平面型の熱交換器が用いられ、上記熱交換器設置溝内に上記平面型の地中熱熱交換器がほぼ垂直に設置されているとともに、上記地中熱熱交換器に対してその上方から水を供給する給水パイプが配置されており、上記給水パイプに上記建屋の外部から水を供給する水供給手段が接続されていることを特徴としている。
In order to solve the above-described problems, the present invention has a ground heat exchanger that exchanges heat between a predetermined heat medium and ground heat, and the heat is exchanged by the ground heat exchanger. In the underground heat exchange system in which the heat medium is further subjected to heat exchange with a heat pump device, and air conditioning and / or hot water supply of a predetermined building is performed using the heat pump device, the underground heat exchanger is embedded. The heat exchanger installation groove is formed in a long and narrow slit shape in the water-permeable underground below the building, and the heat exchange tubes are arranged in multiple rows or spirals as the underground heat exchanger. A planar heat exchanger is used, and the planar underground heat exchanger is installed almost vertically in the heat exchanger installation groove, and the underground heat exchanger is On the other hand, there is a water supply pipe that supplies water from above It is characterized in that water supply means for supplying an external water of the building to the water feed pipe is connected.

また、本発明において、上記給水パイプに結束体を介して上記地中熱熱交換器が連結されていることが好ましい。Moreover, in this invention, it is preferable that the said underground heat exchanger is connected to the said water supply pipe through the binding body.

また、上記水供給手段として、上記建屋の外に設けられた雨樋から上記給水パイプに水を送る第１水供給回路および／または貯水タンクに蓄えられた水を上記給水パイプに送る第２水供給回路を備えていることが好ましい。
In addition, as the water supply means, a first water supply circuit for sending water from a rain gutter provided outside the building to the water supply pipe and / or a second water for sending water stored in the water storage tank to the water supply pipe preferably includes a supply circuits.

本発明には、さらに別の態様として、上記建屋の屋根および／または上記建屋の周囲には、太陽光発電パネルが設置されており、上記太陽光発電パネルには、パネル表面に水をまく散水手段と、上記パネル表面に散水された水を回収する水回収手段とが設けられており、上記水回収手段より上記給水パイプに水が供給される態様も含まれる。
In another aspect of the present invention, a photovoltaic power generation panel is installed on the roof of the building and / or around the building, and the solar power generation panel is sprinkled with water on the panel surface. Means and a water recovery means for recovering water sprayed on the panel surface are provided, and a mode in which water is supplied from the water recovery means to the water supply pipe is also included.

本発明によれば、地中熱熱交換器が埋設される熱交換器設置溝を建屋の下の透水性を有する地中内に細長いスリット状として形成し、地中熱熱交換器として熱交換チューブを平面的に多列もしくは螺旋状に配設してなる平面型の熱交換器を用い、熱交換器設置溝内に平面型の地中熱熱交換器をほぼ垂直に設置するとともに、地中熱熱交換器に対してその上方から水を供給する給水パイプを配置し、給水パイプに建屋の外部に設けられている水供給手段から水を供給するようにしたことにより、限られた土地を有効に利用して、熱交換を行うことができる。
According to the present invention, the heat exchanger installation groove in which the underground heat exchanger is embedded is formed as a long and narrow slit in the underground having water permeability under the building, and heat exchange is performed as an underground heat heat exchanger. using a flat-type heat exchanger formed by arranged in a planar manner the multi-row or spiral tube, it established substantially vertically flat underground heat exchanger to the heat exchanger placed in the groove, the land The water supply pipe that supplies water from above to the medium heat exchanger is arranged, and water is supplied to the water supply pipe from the water supply means provided outside the building. It is possible to perform heat exchange by effectively using.

また、複数の熱交換器設置溝を互いに平行となるように配置することにより、長方型ハウスなどの下に熱交換器設置溝を効率的に組み込むことができる。また、複数の熱交換器設置溝を放射状に配置することにより、ドーム型ハウスような円形の土地の下に熱交換器設置溝を効率的に組み込むことができる。
Further, the Rukoto be placed so as to be mutually parallel heat exchanger installation groove of multiple, it may incorporate a heat exchanger installation groove under such rectangular type house efficiently. Further, by arranging the plurality of heat exchanger installation grooves radially, the heat exchanger installation grooves can be efficiently incorporated under a circular land such as a dome-shaped house.

上記水供給手段は、上記建屋の外に設けられた雨樋から上記熱交換器設置溝に水を送る第１水供給回路と、水タンクに蓄えられた水を上記熱交換器設置溝に送る第２水供給回路との少なくとも一方を備えていることにより、建屋の下に埋設された熱交換器設置溝に水を供給することができ、熱交換器設置溝でのエネルギー変換効率を高めることができる。   The said water supply means sends the water stored in the 1st water supply circuit which sends water to the said heat exchanger installation groove from the rain gutter provided outside the said building, and the water stored in the water tank to the said heat exchanger installation groove By providing at least one of the second water supply circuit, water can be supplied to the heat exchanger installation groove buried under the building, and the energy conversion efficiency in the heat exchanger installation groove is increased. Can do.

また、太陽光発電パネルの発電効率を上げる方法の１つとして、パネル表面に散水することが知られているが、パネル表面に散水した水を回収して、地中熱熱交換器に供給することにより、排水を有効活用してさらに省エネを図ることができる。   In addition, as one of the methods for increasing the power generation efficiency of the photovoltaic power generation panel, it is known that water is sprayed on the panel surface. The water sprayed on the panel surface is collected and supplied to the underground heat exchanger. As a result, the wastewater can be effectively used to further save energy.

本発明の一実施形態に係る熱交換システムのブロック構成図。The block block diagram of the heat exchange system which concerns on one Embodiment of this invention. 上記熱交換システムの平面から見た状態のブロック構成図。The block block diagram of the state seen from the plane of the said heat exchange system. 地中熱交換器の模式図。The schematic diagram of an underground heat exchanger. 熱交換器設置溝の内部構造を示す断面図。Sectional drawing which shows the internal structure of a heat exchanger installation groove | channel. （ａ）〜（ｃ）熱交換ユニットの詳細な構成を示す構成図。(A)-(c) The block diagram which shows the detailed structure of a heat exchange unit. 熱交換器設置溝の変形例を示す断面図。Sectional drawing which shows the modification of a heat exchanger installation groove | channel. 熱交換器設置溝の配置例を示す模式図。The schematic diagram which shows the example of arrangement | positioning of a heat exchanger installation groove | channel. （ａ）〜（ｄ）地中熱交換器の敷設手順を説明する説明図。(A)-(d) Explanatory drawing explaining the installation procedure of a ground heat exchanger. ドーム型ハウスに本発明の熱交換システムを組み込んだ状態の模式図。The schematic diagram of the state which incorporated the heat exchange system of this invention in the dome shape house. 本発明の第２実施形態に係る熱交換システムのブロック構成図。The block block diagram of the heat exchange system which concerns on 2nd Embodiment of this invention.

次に、本発明の熱交換システムの実施形態について図面を参照しながら説明するが、本発明はこれに限定されるものではない。   Next, an embodiment of the heat exchange system of the present invention will be described with reference to the drawings, but the present invention is not limited to this.

図１および図２に示すように、この熱交換システムは、地中熱との間で熱交換を行う一次側熱交換回路１００と、所定のヒートポンプ装置（この例では空気調和機１）の一部に組み込まれる二次熱交換回路２００と、一次側熱交換器１００に水を供給する水供給ユニット３００とを備えている。   As shown in FIGS. 1 and 2, this heat exchange system includes a primary heat exchange circuit 100 that exchanges heat with underground heat, and a predetermined heat pump device (in this example, the air conditioner 1). And a water supply unit 300 for supplying water to the primary heat exchanger 100.

一次側熱交換回路１００は、地中に埋設される地中熱熱交換器１１０と、二次熱交換回路２００との間で熱交換を行うための熱交換ユニット１２０と、地中熱熱交換器１１０と熱交換ユニット１２０との間で熱媒体を循環させる循環パイプ１３０とを備えている。循環パイプ１３０には、熱媒体を一方向に循環させるポンプ１４０が設けられている。   The primary side heat exchange circuit 100 includes a ground heat heat exchanger 110 embedded in the ground, a heat exchange unit 120 for performing heat exchange between the secondary heat exchange circuit 200, and a ground heat heat exchange. And a circulation pipe 130 for circulating a heat medium between the heat exchanger 110 and the heat exchange unit 120. The circulation pipe 130 is provided with a pump 140 that circulates the heat medium in one direction.

この例において、熱媒体は、不凍液を混ぜた水が用いられるが、これ以外に熱伝導性のよい液体があれば、仕様に応じて適宜選択可能である。   In this example, water mixed with antifreeze liquid is used as the heat medium, but any other liquid having good heat conductivity can be selected as appropriate according to the specifications.

図４を併せて参照して、地中熱熱交換器１１０は、農業用ビニールハウス１０の下に敷設された熱交換器設置溝１５０の内部に敷設されている。この例において、熱交換器設置溝１５０は、長さＬ（３００００ｍｍ）、幅Ｗ（８００ｍｍ）の細長いスリット状に開口され、地表面から深さＤ（３０００ｍｍ）まで掘り下げられた底から高さＨ（１５００ｍｍ）の長方形空間に形成されている。   Referring also to FIG. 4, the underground heat exchanger 110 is laid inside a heat exchanger installation groove 150 laid under the agricultural greenhouse 10. In this example, the heat exchanger installation groove 150 is opened in the shape of an elongated slit having a length L (30000 mm) and a width W (800 mm), and the height H from the bottom dug down from the ground surface to a depth D (3000 mm). It is formed in a rectangular space of (1500 mm).

熱交換器設置溝１５０は、その内部に透水性を確保するため砂が充填されている。この例において、熱交換器設置溝１５０には、水はけのよい川砂が充填されているが、これ以外にも例えば砕石など、熱交換器設置溝１５０が透水性を備えることができれば、仕様に応じて任意に選択される。   The heat exchanger installation groove 150 is filled with sand to ensure water permeability. In this example, the heat exchanger installation groove 150 is filled with well-drained river sand, but in addition to this, if the heat exchanger installation groove 150 can have water permeability, such as crushed stone, according to the specifications. Is arbitrarily selected.

熱交換器設置溝１５０の上部には、熱交換器設置溝１５０を掘り起こした際に出た残土が充填されている。この例において、残土層（地表面から熱交換器設置溝１５０の上面までの高さ）は１５００ｍｍである。残土層の厚さは、任意に選択されてよい。   The upper portion of the heat exchanger installation groove 150 is filled with the residual soil that has come out when the heat exchanger installation groove 150 is dug up. In this example, the remaining soil layer (height from the ground surface to the upper surface of the heat exchanger installation groove 150) is 1500 mm. The thickness of the remaining soil layer may be arbitrarily selected.

図３を参照して、地中熱熱交換器１１０は、２本の中空なメインパイプ１１１，１１２と、メインパイプ１１１，１１２の間に架け渡すように連結された複数の熱交換チューブ１１３とを備えている。
Referring to FIG. 3, the underground heat exchanger 110 is provided with two hollow main pipe 111, a plurality of heat exchange tubes 113 which are connected as to bridge between the main pipes 111, 112 It has.

各メインパイプ１１１，１１２はともに、塩化ビニル製の硬質な管材からなり、いずれか一端（メインパイプ１１１は下端、メインパイプ１１２は上端）が閉塞されている。   Each of the main pipes 111 and 112 is made of a hard pipe material made of vinyl chloride, and one end thereof is closed (the main pipe 111 has a lower end and the main pipe 112 has an upper end).

熱交換チューブ１１３は、合成樹脂製の可撓性を有する細いチューブからなり、その両端が各メインパイプ１１１，１１２の外周に軸線方向に形成された図示しない連通孔に差し込まれ、メインパイプ１１１，１１２の管内同士に連通している。熱交換チューブ１１３のほぼ中間には、熱交換チューブ１１３の並びを整え、かつ撓まないようにするための、補強桟１１４が設けられている。
Heat exchange tubes 11 3 comprises a thin tube with a synthetic resin flexible, both ends are inserted into the communication hole (not shown) formed in the axial direction on the outer periphery of the main pipe 111, main pipes 111 112 communicate with each other. The approximately midway of the heat exchange tubes 11 3, furnished the arrangement of the heat exchange tubes 11 3, and for so undeflected, reinforcing bars 114 are provided.

これによれば、一方のメインパイプ１１１から注入された熱媒体は、熱交換チューブ１１３を通って他方のメインパイプ１１２の下端から吐出され、その際、熱交換チューブ１１３で地中熱との間で熱交換が行われる。
According to this, the heat medium injected from one of the main pipe 111, through the heat exchange tubes 113 is discharged from the lower end of the other main pipe 112, the time, and geothermal heat in the heat exchanger tubes 11 3 Heat exchange takes place between them.

この例において、地中熱熱交換器１１０は、アメリカのマイタルテック社製のハイパーループ（米国登録商標）が好適に用いられている。なお、少なくとも熱交換が行われる構造を備えていればよい。   In this example, as the underground heat exchanger 110, Hyper Loop (US registered trademark) manufactured by Mittal Tech of the United States is suitably used. In addition, what is necessary is just to provide the structure where heat exchange is performed at least.

また、図６に示すように、通常の熱交換チューブ１１０ａを熱交換器設置溝１５０の深さに合わせて螺旋状にした状態で埋設して、その上に給水パイプ１１５を配置するようにしてもよい。このような態様も本発明に含まれる。   Further, as shown in FIG. 6, a normal heat exchange tube 110a is embedded in a spiral shape in accordance with the depth of the heat exchanger installation groove 150, and a water supply pipe 115 is disposed thereon. Also good. Such an embodiment is also included in the present invention.

また、この例において、熱交換器設置溝１５０は、細長いスリット状に開口されているが、これ以外に、熱交換器設置溝１５０を平面状に開口して、その中に地中熱熱交換器１１０をほぼ水平な状態で配置してもよい。その場合、１つの熱交換器設置溝１５０に対して複数の地中熱熱交換器１１０を積層して配置してもよい。このような態様も本発明に含まれる。   Further, in this example, the heat exchanger installation groove 150 is opened in the shape of an elongated slit, but in addition to this, the heat exchanger installation groove 150 is opened in a flat shape, and underground heat heat exchange is performed therein. The vessel 110 may be arranged in a substantially horizontal state. In that case, a plurality of underground heat exchangers 110 may be stacked and arranged with respect to one heat exchanger installation groove 150. Such an embodiment is also included in the present invention.

地中熱熱交換器１１０にはさらに、地中熱熱交換器１１０の上部から水を供給する給水パイプ１１５が設けられている。給水パイプ１１５は、塩ビ製のパイプからなり、地中熱熱交換器１１０の上端に架け渡されている。   The geothermal heat exchanger 110 is further provided with a water supply pipe 115 that supplies water from the upper part of the geothermal heat exchanger 110. The water supply pipe 115 is made of a vinyl chloride pipe and spans the upper end of the underground heat exchanger 110.

給水パイプ１１５は、一端が後述する水供給ユニット３００に接続され、他端が閉塞されており、その周縁には軸線方向に沿って一定間隔で水吐出孔１１６が設けられている。給水パイプ１１５は、地中熱熱交換器１１０の熱交換チューブ１１２に結束帯１１７を介して一体的に括り付けられている。   One end of the water supply pipe 115 is connected to a water supply unit 300, which will be described later, and the other end is closed, and water discharge holes 116 are provided on the periphery of the water supply pipe 115 at regular intervals along the axial direction. The water supply pipe 115 is integrally bound to the heat exchange tube 112 of the underground heat exchanger 110 via a binding band 117.

この例において、給水パイプ１１５は塩ビ製のストレート管が用いられているが、水を供給することができればよく、例えば散水用チューブなどがもちいられてもよく、その形態は仕様に応じて任意に変更されてよい。   In this example, the water supply pipe 115 is a straight pipe made of polyvinyl chloride, but it is sufficient that water can be supplied. For example, a watering tube or the like may be used. It may be changed.

熱交換ユニット１２０は、図５（ａ）に示すように、所定の冷媒循環回路を有し、一方の凝縮器側に一次冷媒の循環パイプ１３０が接続され、他方の膨張器側に二次熱交換回路２００の循環パイプ２１０が接続されることによって相互の熱交換を行うようになっている。   As shown in FIG. 5A, the heat exchange unit 120 has a predetermined refrigerant circulation circuit, a primary refrigerant circulation pipe 130 is connected to one condenser side, and a secondary heat is provided to the other expander side. The circulation pipe 210 of the exchange circuit 200 is connected to exchange heat with each other.

この例において、熱交換ユニット１２０は、図５（ａ）に示す構成であるが、これ以外に、図５（ｂ）に示すように、熱交換ユニット１２０の放熱器側をダイレクトに屋内に設置して、一次冷媒と二次冷媒とを直接熱交換してもよい。   In this example, the heat exchange unit 120 has the configuration shown in FIG. 5 (a), but in addition to this, as shown in FIG. 5 (b), the radiator side of the heat exchange unit 120 is directly installed indoors. Thus, the primary refrigerant and the secondary refrigerant may directly exchange heat.

さらには、図５（ｃ）に示すように、熱媒体を水や冷媒ガスに代えて、空気でおこなうようにしてもよい。熱交換ユニット１２０は、一次側の熱媒体と二次側の熱媒体とが熱交換可能な構成であれば、仕様に応じて任意に設計されてよい。   Further, as shown in FIG. 5C, the heat medium may be air instead of water or refrigerant gas. The heat exchange unit 120 may be arbitrarily designed according to the specifications as long as the heat exchange between the primary heat medium and the secondary heat medium is heat exchangeable.

循環パイプ１３０は、屈曲可能なチューブからなり、循環ポンプ１４０を介して熱媒体が一方向に流れて循環するようになっている。循環パイプ１３０は、内部に熱媒体が搬送可能であれば、その具体的な仕様は任意に選択されてよい。   The circulation pipe 130 is made of a bendable tube, and the heat medium flows in one direction through the circulation pump 140 and circulates. The specific specification of the circulation pipe 130 may be arbitrarily selected as long as the heat medium can be conveyed therein.

二次熱交換回路２００は、空気調和機１の熱媒体が循環する冷凍サイクル回路からなる。この例では、空気調和機１の循環パイプ２１０と、ハウス１０内に設置された室内機ユニット２２０とを有し、その一部に熱交換ユニット１２０が組み込まれている。   The secondary heat exchange circuit 200 includes a refrigeration cycle circuit in which the heat medium of the air conditioner 1 circulates. In this example, it has the circulation pipe 210 of the air conditioner 1, and the indoor unit 220 installed in the house 10, The heat exchange unit 120 is incorporated in the one part.

なお、本発明において、二次熱交換回路２００の具体的な構成は任意であってよく、循環パイプ２１０および室内機ユニット２２０の構成は，仕様に応じて任意に変更されてよい。   In the present invention, the specific configuration of the secondary heat exchange circuit 200 may be arbitrary, and the configurations of the circulation pipe 210 and the indoor unit 220 may be arbitrarily changed according to specifications.

水供給ユニット３００は、ハウス１０の外の側面に沿って形成された側溝３１０と、一端が側溝３１０に接続され、他端が上述した給水パイプ１１５に接続される水供給パイプ３２０とを備えている。   The water supply unit 300 includes a side groove 310 formed along the outer side surface of the house 10, and a water supply pipe 320 having one end connected to the side groove 310 and the other end connected to the water supply pipe 115 described above. Yes.

これによれば、雨などが降った際の水を側溝３１０に溜めて、水供給パイプ３２０を介して給水パイプ１１５から、ハウス１０の下に埋設された地中熱熱交換器１１０に水を供給することができ、熱交換効率をより一層高めることができる。   According to this, the water when raining or the like is accumulated in the side groove 310, and water is supplied from the water supply pipe 115 through the water supply pipe 320 to the underground heat exchanger 110 buried under the house 10. The heat exchange efficiency can be further increased.

また、側溝３１０は、雨が降った際にしか水を溜めることができない。そこで、本発明では、例えば雨水を溜めておく水タンクなどからなる水供給ユニット３３０をさらに備え、そこからポンプ３５０を介して水を給水パイプ１１５に送る第２の水供給パイプ３４０が設けられている。   Further, the side groove 310 can collect water only when it rains. Therefore, in the present invention, a water supply unit 330 including, for example, a water tank for storing rainwater is further provided, and a second water supply pipe 340 for supplying water to the water supply pipe 115 via the pump 350 is provided. Yes.

これによれば、雨が降らない時であっても、定期的に水を地中熱熱交換器１１０の供給することができ、常に熱交換効率の高い運転を行うことができる。なお、水給水ユニット３３０の水タンクは、例えば河川や湖なども含まれてよい。   According to this, even when it is not raining, water can be periodically supplied to the underground heat exchanger 110, so that an operation with high heat exchange efficiency can always be performed. Note that the water tank of the water supply unit 330 may include, for example, a river or a lake.

この例において、熱交換器設置溝１５０はハウス１０下に１ヶ所のみ設けられているが、これ以外に、例えば図７に示すように、ハウス１０の下に複数、この例では４個所の熱交換器設置溝１５０を設けてもよい。複数の熱交換器設置溝１５０の接続方法は、直列回路、並列回路のいずれであってもよい。同様に給水パイプ１１５も直列回路でもよいし、並列回路でもよい。   In this example, only one heat exchanger installation groove 150 is provided under the house 10, but in addition to this, for example, as shown in FIG. An exchanger installation groove 150 may be provided. The connection method of the plurality of heat exchanger installation grooves 150 may be either a series circuit or a parallel circuit. Similarly, the water supply pipe 115 may be a series circuit or a parallel circuit.

熱交換器設置溝１５０を複数設けた場合、全てをハウス１０の下に設置する必要は無く、一部をハウス１０（建屋）の外に設置してもよい。その場合、ハウス１０の外壁面に沿って配置することが好ましい。   When a plurality of heat exchanger installation grooves 150 are provided, it is not necessary to install all of them under the house 10, and some of them may be installed outside the house 10 (building). In that case, it is preferable to arrange along the outer wall surface of the house 10.

次に、図８（ａ）〜（ｄ）を参照しながら、地中熱熱交換器１１０の敷設手順の一例について説明する。まず、予め所定の大きさに掘られた熱交換器設置溝１５０に鉄筋や樹脂などからなるポールＰを熱交換器設置溝１５０に沿って等間隔で配置する。   Next, an example of a procedure for laying the underground heat exchanger 110 will be described with reference to FIGS. First, poles P made of reinforcing steel or resin are arranged at equal intervals along the heat exchanger installation groove 150 in the heat exchanger installation groove 150 dug in advance to a predetermined size.

次に、図８（ｂ）に示すように、ポールＰの間に挟むように地中熱熱交換器１１０を熱交換器設置溝１５０にセットしたのち、配管処理を行う。なお、地中熱熱交換器１１０を下に降ろす際、上述した給水パイプ１１５を吊り下げながら地中熱熱交換器１１０を降ろすことにより、真っ直ぐな状態で定位置にセットすることができる。   Next, as shown in FIG. 8 (b), after setting the underground heat exchanger 110 in the heat exchanger installation groove 150 so as to be sandwiched between the poles P, pipe processing is performed. When the underground heat exchanger 110 is lowered, the underground heat exchanger 110 is lowered while the above-described water supply pipe 115 is suspended, so that the underground heat exchanger 110 can be set in a straight position.

次に、図８（ｃ）に示すように、地中熱熱交換器１１０が配置された状態で熱交換器設置溝１５０に砂を充填したのち、ポールＰを抜き取る。これにより、図８（ｄ）に示すように、熱交換器設置溝１５０の中央に地中熱熱交換器１１０を立てた状態で綺麗に埋設することができる。   Next, as shown in FIG.8 (c), after filling the heat exchanger installation groove | channel 150 with the ground heat exchanger 110 arrange | positioned, the pole P is extracted. Thereby, as shown in FIG.8 (d), it can embed neatly in the state which stood the underground heat exchanger 110 in the center of the heat exchanger installation groove | channel 150. FIG.

次に、図９を参照しながら、本発明の地中熱交換システムの変形例について説明する。この例において、地中熱交換システムは、ドーム型ハウス１０Ａに組み込まれている。ドーム型ハウス１０Ａは、例えば中心から外側に向かって移動する放射状コンベアの上で野菜を成長させてゆき、最終的に外側に来た野菜を収穫するといった農業用途に用いられている。なお、ドーム型ハウス１０Ａの用途は任意であってよい。   Next, a modification of the underground heat exchange system of the present invention will be described with reference to FIG. In this example, the underground heat exchange system is incorporated in the dome-shaped house 10A. The dome-shaped house 10A is used for agricultural purposes such as growing vegetables on a radial conveyor moving outward from the center and finally harvesting the vegetables that have come to the outside. Note that the use of the dome-shaped house 10A may be arbitrary.

このドーム型ハウス１０Ａの下には、複数の熱交換器設置溝１５０が放射状に配置されている。各熱交換器設置溝１５０にはそれぞれ、地中熱熱交換器１１０が埋設されており、それらは配管１３０により連結されている。   A plurality of heat exchanger installation grooves 150 are arranged radially below the dome-shaped house 10A. The underground heat exchanger 110 is embedded in each heat exchanger installation groove 150, and they are connected by a pipe 130.

これによれば、ドーム型ハウス１０Ａの下に熱交換器設置溝１５０を放射状に配置することで、限られた土地に熱交換器設置溝１５０を効率的に組み込むことができ、ひいては、効率的な地中熱交換システムが得られる。   According to this, by arranging the heat exchanger installation grooves 150 radially below the dome-shaped house 10A, the heat exchanger installation grooves 150 can be efficiently incorporated in a limited land, and as a result, efficient. A simple underground heat exchange system.

この例において、地中熱交換システムは、農業用ハウスの下に敷設する例をとって説明したが、これ以外に、一般家屋や工場などの建屋の下に設置してもよい。さらには、畜産業の牛舎などの下に組み込むこともでき、本発明の熱交換システムは、熱交換器設置溝１５０が建屋の下に敷設されていれば、その他の使用形態も本発明に含まれる。   In this example, the geothermal heat exchange system has been described as an example of laying under an agricultural house, but in addition to this, it may be installed under a building such as a general house or a factory. Furthermore, the heat exchange system of the present invention can also be incorporated under a barn or the like of a livestock industry, as long as the heat exchanger installation groove 150 is laid under the building, other forms of use are also included in the present invention. It is.

次に、図１０を参照して、本発明の第２実施形態に係る地中熱交換システムについて説明する。第２実施形態において、地中熱交換システムは、建屋の屋根Ｒの上に太陽光発電装置４００が組み込まれている。なお、上述した第１実施形態と同一もしくは同一と見なされる箇所には同じ参照符号を付し、その説明は省略する。   Next, with reference to FIG. 10, the underground heat exchange system which concerns on 2nd Embodiment of this invention is demonstrated. In the second embodiment, in the underground heat exchange system, the solar power generation device 400 is incorporated on the roof R of the building. In addition, the same referential mark is attached | subjected to the part considered the same as 1st Embodiment mentioned above, or the same, The description is abbreviate | omitted.

太陽光発電装置４００は、屋根Ｒの上に設置された太陽光発電パネル４１０と、同太陽光発電パネル４１０の表面に水を散水する散水手段４２０と、太陽光発電パネル４１０に散水された水を回収する水回収手段４３０とを備えている。   The photovoltaic power generation apparatus 400 includes a photovoltaic power generation panel 410 installed on the roof R, water sprinkling means 420 for sprinkling water on the surface of the photovoltaic power generation panel 410, and water sprayed on the photovoltaic power generation panel 410. And a water recovery means 430 for recovering water.

太陽光発電パネル４１０は、一般的な太陽光発電に用いられる板状パネルであって、この例では建屋の屋根Ｒの上に設置されている。本発明において、太陽光発電パネル４１０の仕様は、任意に選択可能であり、その設置場所も屋根Ｒ以外に建屋の周辺に設置されていてもよい。   The photovoltaic power generation panel 410 is a plate-like panel used for general photovoltaic power generation, and is installed on the roof R of the building in this example. In the present invention, the specifications of the photovoltaic power generation panel 410 can be arbitrarily selected, and the installation location thereof may be installed around the building other than the roof R.

散水手段４２０は、貯水タンク４２１と、貯水タンク４２１の水を送水管４２３を介して圧送するポンプ４２２と、太陽光発電パネル４１０の表面に散水する散水パイプ４２４とを備えている。   The watering means 420 includes a water storage tank 421, a pump 422 that pumps water from the water storage tank 421 through a water supply pipe 423, and a watering pipe 424 that waters the surface of the photovoltaic power generation panel 410.

この例において、貯水タンク４２１には、水道水が貯められているが、これ以外に雨水などの中水を貯水してもよい。さらには、池や川の水が貯水されていてもよい。散水パイプ４２４は、円筒パイプの一部に水を吐出させる吐出孔を多数備えたものが用いられており、この例では農業用の点滴灌水パイプが用いられている。   In this example, tap water is stored in the water storage tank 421, but other medium water such as rain water may be stored. Furthermore, pond or river water may be stored. The sprinkling pipe 424 is provided with many discharge holes for discharging water to a part of a cylindrical pipe, and in this example, an agricultural drip irrigation pipe is used.

散水パイプ４２４は、傾斜して配置された太陽光発電パネル４１０の上流側に配置されており、散水パイプ４２４から散水された水が、太陽光発電パネル４１０の上流側から下流側に向かって自然に流れ落ちるようになっている。   The water sprinkling pipe 424 is disposed on the upstream side of the photovoltaic power generation panel 410 that is inclined, and the water sprinkled from the watering pipe 424 is naturally moved from the upstream side of the photovoltaic power generation panel 410 toward the downstream side. It is supposed to flow down.

水回収手段４３０は、太陽光発電パネル４１０の下流側に配置された樋４３１と、一端が樋４３１に接続され、他端が熱交換器設置溝１５０の内の給水パイプ１１５に接続される配水管４３２とを備えている。   The water recovery means 430 has a rod 431 disposed on the downstream side of the photovoltaic power generation panel 410, one end connected to the rod 431, and the other end connected to the water supply pipe 115 in the heat exchanger installation groove 150. A water pipe 432.

樋４３１は、いわゆる雨樋からなり、太陽光発電パネル４１０を流れてきた水を効率的に受け止めて、回収するようになっている。この例において、水は樋によって４３１受け止められるようになっているが、水を回収することができれば、これ以外の構成であってもよい。   The eaves 431 are made of so-called rain gutters, and efficiently receive and collect the water flowing through the solar power generation panel 410. In this example, the water is received 431 by the eaves, but other configurations may be used as long as the water can be recovered.

また、この例において、配水管４３２は、樋４３１と給水パイプ１１５とをダイレクトに接続しているが、回収した水を一端タンクに貯めるような構造であってもよく、回収された水が最終的に熱交換器設置溝１５０内の地中熱熱交換器１１０に供給される構造であれば、その他の変形例も本発明に含まれる。   In this example, the water distribution pipe 432 directly connects the basin 431 and the water supply pipe 115, but may have a structure in which the collected water is stored in a tank at one end. As long as the structure is supplied to the underground heat exchanger 110 in the heat exchanger installation groove 150, other modifications are also included in the present invention.

１ 空気調和機
１００ 一次側熱交換回路
１１０ 地中熱熱交換器
１２０ 熱交換ユニット
１３０ 循環パイプ
１５０ 熱交換器設置溝
２００ 二次側熱交換回路
３００ 水供給ユニット
４００ 太陽光発電装置
４１０ 太陽光発電パネル
４２０ 散水手段
４３０ 水回収手段 DESCRIPTION OF SYMBOLS 1 Air conditioner 100 Primary side heat exchange circuit 110 Geothermal heat exchanger 120 Heat exchange unit 130 Circulation pipe 150 Heat exchanger installation groove 200 Secondary side heat exchange circuit 300 Water supply unit 400 Solar power generation device 410 Solar power generation Panel 420 Sprinkling means 430 Water recovery means

Claims (6)

所定の熱媒体と地中熱との間で熱交換する地中熱熱交換器を有し、上記地中熱熱交換器にて熱交換された上記熱媒体をヒートポンプ装置との間でさらに熱交換し、上記ヒートポンプ装置を用いて所定の建屋の冷暖房および／または給湯を行う地中熱交換システムにおいて、
上記地中熱熱交換器が埋設される熱交換器設置溝が上記建屋の下の透水性を有する地中内に細長いスリット状に形成されており、上記地中熱熱交換器として熱交換チューブを平面的に多列もしくは螺旋状に配設してなる平面型の熱交換器が用いられ、上記熱交換器設置溝内に上記平面型の地中熱熱交換器がほぼ垂直に設置されているとともに、上記地中熱熱交換器に対してその上方から水を供給する給水パイプが配置されており、上記給水パイプに上記建屋の外部から水を供給する水供給手段が接続されていることを特徴とする地中熱交換システム。 A ground heat heat exchanger that exchanges heat between a predetermined heat medium and the ground heat, and further heats the heat medium that has been heat exchanged by the ground heat heat exchanger with a heat pump device. In the underground heat exchange system that exchanges and heats and / or supplies hot water of a predetermined building using the heat pump device,
A heat exchanger installation groove in which the geothermal heat exchanger is embedded is formed in an elongated slit shape in the underground having water permeability under the building, and a heat exchange tube as the geothermal heat exchanger Are used in a multi-row or spiral arrangement, and the flat underground heat exchanger is installed almost vertically in the heat exchanger installation groove. And a water supply pipe for supplying water from above to the geothermal heat exchanger is disposed, and water supply means for supplying water from the outside of the building is connected to the water supply pipe . Underground heat exchange system. 上記給水パイプに結束体を介して上記地中熱熱交換器が連結されていることを特徴とする請求項１に記載の地中熱交換システム。The underground heat exchange system according to claim 1, wherein the underground heat exchanger is connected to the water supply pipe via a bundle. 複数の上記熱交換器設置溝が互いに平行となるように配置されていることを特徴とする請求項１または２に記載の地中熱交換システム。 Geothermal heat exchange system according to claim 1 or 2, wherein a plurality of the heat exchanger installation groove is arranged so as to be parallel to each other. 複数の上記熱交換器設置溝が放射状に配置されていることを特徴とする請求項１または２に記載の地中熱交換システム。 The ground heat exchange system according to claim 1 or 2 , wherein a plurality of said heat exchanger installation grooves are arranged radially. 上記水供給手段は、上記建屋の外に設けられた雨樋から上記給水パイプに水を送る第１水供給回路および／または貯水タンクに蓄えられた水を上記給水パイプに送る第２水供給回路を備えていることを特徴とする請求項１ないし４のいずれか１項に記載の地中熱交換システム。 The water supply means includes a first water supply circuit that sends water from a rain gutter provided outside the building to the water supply pipe and / or a second water supply circuit that sends water stored in a water storage tank to the water supply pipe. The ground heat exchange system according to any one of claims 1 to 4 , characterized by comprising: 上記建屋の屋根および／または上記建屋の周囲には、太陽光発電パネルが設置されており、上記太陽光発電パネルには、パネル表面に水をまく散水手段と、上記パネル表面に散水された水を回収する水回収手段とが設けられており、上記水回収手段より上記給水パイプに水が供給されることを特徴とする請求項１ないし５のいずれか１項に記載の地中熱交換システム。 A photovoltaic power generation panel is installed on the roof of the building and / or around the building, and the photovoltaic power generation panel has water spray means for watering the panel surface and water sprayed on the panel surface. A ground heat exchange system according to any one of claims 1 to 5 , wherein water recovery means for recovering water is provided, and water is supplied from the water recovery means to the water supply pipe. .
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