JP2006284065A - Geothermal heat recovering system using pile for recovering geothermal heat - Google Patents

Geothermal heat recovering system using pile for recovering geothermal heat Download PDF

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JP2006284065A
JP2006284065A JP2005102967A JP2005102967A JP2006284065A JP 2006284065 A JP2006284065 A JP 2006284065A JP 2005102967 A JP2005102967 A JP 2005102967A JP 2005102967 A JP2005102967 A JP 2005102967A JP 2006284065 A JP2006284065 A JP 2006284065A
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heat
heat medium
ground
pile
group
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JP2006284065A5 (en
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Hirotaka Wada
博孝 和田
Makoto Oyama
誠 尾山
Soki Fukumuro
創喜 福室
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Daiwa House Industry Co Ltd
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Daiwa House Industry Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a geothermal heat recovering system using a geothermal heat recovering pile not needing high performance of a heat medium transporting driving means to recover geothermal heat, and efficiently recovering geothermal heat. <P>SOLUTION: In this geothermal heat recovering system, a number of geothermal heat recovering piles 1 driven in the ground surface are divided into a plurality of groups 6, 7, 8, and a control device 16 is mounted to perform the control for changing the groups recovering geothermal heat with time, while keeping a state that geothermal heat is recovered in geothermal heat recovering heat medium passages of a part of the groups, and geothermal heat is not recovered in the geothermal heat recovering heat medium passages of the remaining groups. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、地中熱回収用杭を用いた地中熱回収システムに関する。   The present invention relates to a ground heat recovery system using a ground heat recovery pile.

地中熱回収用杭は従来より知られており、また、該杭を建物の基礎杭として多数本地面に打ち込み、各杭から地中熱を回収する方法も提案されている。   Conventionally, piles for ground heat recovery have been known, and a method of driving ground piles to the ground as a foundation pile of a building and collecting ground heat from each pile has been proposed.

しかしながら、各杭の地中熱回収用熱媒通路を互いに直列につないでも、あるいは、並列つないでも、あるいは、直列と並列とを組み合わせてつないでも、杭の本数が多い場合には、ポンプなどの熱媒輸送駆動手段として、大きな能力を備えたものを使用しなければならなかったり、使用する熱媒輸送駆動手段の数を多くしなければならない等の問題がある。   However, if the heat medium passages for underground heat recovery of each pile are connected in series with each other, connected in parallel, or connected in combination with series and parallel, if there are many piles, There are problems such as having to use a large-capacity heat medium transport driving means or increasing the number of heat medium transport driving means to be used.

また、すべての杭から同時に地中熱を回収し続けると、各杭の周囲の土砂が地中熱の回収によって熱を奪われ、そのまま地中熱回収を続けても地中熱を効率良く回収できない場合があるという問題もある。   In addition, if geothermal heat is continuously collected from all piles simultaneously, the earth and sand around each pile is deprived of heat by collecting geothermal heat, and even if geothermal heat is collected as it is, geothermal heat is efficiently recovered. There is also a problem that it may not be possible.

本発明は、上記のような問題点に鑑み、地中熱回収に使用する熱媒輸送駆動手段として能力の高いものを使用する必要がなく、しかも、地中熱の回収を効率良く行うことができる、地中熱回収用杭を用いた地中熱回収システムを提供することを課題とする。   In view of the above problems, the present invention does not require the use of a high-capacity heat medium transport driving means used for underground heat recovery, and can efficiently recover underground heat. An object of the present invention is to provide a geothermal heat recovery system that uses a pile for underground heat recovery.

上記の課題は、内部に地中熱回収用熱媒通路を備えた複数本の杭が地面に打ち込まれ、
これら杭は、少なくとも１本の杭からなる第１グループと、少なくとも１本の杭からなる第２杭グループとの少なくとも２つのグループに分けられ、
入側と出側の対のヘッダーが備えられて、各グループの地中熱回収用熱媒通路がこれら対のヘッダーに連通状態に接続されると共に、該対のヘッダーは主熱媒通路で接続されて、該主熱媒通路と前記地中熱回収用熱媒通路とで熱媒循環路が形成され、
前記主熱媒通路に、熱媒輸送駆動手段と地中熱取出し部とが設けられると共に、各グループの地中熱回収用熱媒通路にグループ単位でそのグループの地中熱回収用熱媒通路を開閉するバルブが設けられ、かつ、
一部のグループのバルブを開にし残りのグループのバルブを閉にした状態を維持しつつ、バルブを開にするグループを時間の経過に伴って変更させていく制御を行う制御手段が備えられていることを特徴とする、地中熱回収用杭を用いた地中熱回収システムによって解決される（第１発明）。 The above problem is that a plurality of piles with a heat medium passage for underground heat recovery are driven into the ground,
These piles are divided into at least two groups, a first group comprising at least one pile and a second pile group comprising at least one pile,
A pair of headers on the inlet side and the outlet side are provided, and the heat medium passage for ground heat recovery of each group is connected to the pair of headers in a communicating state, and the header of the pair is connected by the main heat medium passage. A heat medium circulation path is formed by the main heat medium path and the underground heat recovery heat medium path,
The main heat medium passage is provided with a heat medium transport driving means and a ground heat extraction portion, and the heat medium passage for collecting the underground heat of the group in the heat medium passage for collecting the ground heat of each group. A valve that opens and closes, and
There is a control means for performing control to change the group that opens the valve over time while maintaining the state where the valves of some groups are opened and the valves of the remaining groups are closed. This is solved by a ground heat recovery system using a ground heat recovery pile (first invention).

このシステムでは、地面に打ち込まれた複数の杭が複数のグループに分けられ、一部のグループの地中熱回収用熱媒通路で地中熱回収を行い残りのグループの地中熱回収用熱媒通路での地中熱回収を行わない状態を維持しつつ、地中熱回収を行うグループを時間の経過に伴って変更させていく制御が行われるようになされているので、地中熱回収に使用する熱媒輸送駆動手段は、一部のグループの地中熱回収用熱媒通路で地中熱回収を行うことのできる能力を備えたものであればよく、地面に打ち込まれた杭の数が多い場合であっても、熱媒輸送駆動手段として能力の高いものを使用する必要がない（第１の作用効果）。   In this system, a plurality of piles driven into the ground are divided into a plurality of groups, and ground heat recovery is performed in the heat medium passages for the ground heat recovery of some groups, and the heat for ground heat recovery of the remaining groups is collected. While maintaining the state where geothermal heat recovery in the medium passage is not performed, control is performed to change the group that performs geothermal heat recovery over time, so geothermal heat recovery is performed. The heat medium transport drive means used in the construction may be any means having a capability of performing ground heat recovery in the heat medium passage for ground heat recovery of some groups, and the piles driven into the ground Even when the number is large, it is not necessary to use a high-capacity heat medium transport drive means (first effect).

しかも、杭の周囲の土砂が地中熱の回収によって熱を奪われても、停止中に杭の周囲に新たに地中熱が集まって回復することができ、各グループが効率良く地中熱を回収することができて、地中熱を効率良く回収することができる（第２の作用効果）。   Moreover, even if the earth and sand around the pile is deprived of heat due to the recovery of geothermal heat, new heat can be gathered and recovered around the pile during the outage, allowing each group to efficiently Can be recovered, and the underground heat can be recovered efficiently (second effect).

加えて、上記のシステムでは、各グループの地中熱回収用熱媒通路が対のヘッダーに接続されると共に、該対のヘッダーは主熱媒通路で接続されて、該主熱媒通路と前記地中熱回収用熱媒通路とで熱媒循環路が形成され、そして、主熱媒通路に、熱媒輸送駆動手段と地中熱取出し部とが設けられると共に、各グループの地中熱回収用熱媒通路にグループ単位でそのグループの地中熱回収用熱媒通路を開閉するバルブが設けられた構成であるので、使用する熱媒輸送駆動手段の数も少なくてすむ（第３の作用効果）。   In addition, in the above system, the heat medium passages for the ground heat recovery of each group are connected to a pair of headers, and the pair of headers are connected by a main heat medium passage, A heat medium circulation path is formed with the heat medium passage for ground heat recovery, and a heat medium transport drive means and a ground heat extraction section are provided in the main heat medium path, and each group's ground heat recovery Since the heat medium passage is provided with a valve for opening and closing the underground heat recovery heat medium passage of the group in units of groups, the number of heat medium transport driving means to be used can be reduced (third function). effect).

また、上記の課題は、内部に地中熱回収用熱媒通路を備えた複数本の杭が地面に打ち込まれ、
これら杭は、少なくとも１本の杭からなる第１グループと、少なくとも１本の杭からなる第２杭グループとの少なくとも２つのグループに分けられ、
一部のグループの地中熱回収用熱媒通路で地中熱回収を行い残りのグループの地中熱回収用熱媒通路での地中熱回収を行わない状態を維持しつつ、地中熱回収を行うグループを時間の経過に伴って変更させていく制御を行う制御手段が備えられていることを特徴とする、地中熱回収用杭を用いた地中熱回収システム（第２発明）によっても解決され、上記の第１，第２の作用効果が奏される。 In addition, the above problem is that a plurality of piles having a heat medium passage for underground heat recovery are driven into the ground,
These piles are divided into at least two groups, a first group comprising at least one pile and a second pile group comprising at least one pile,
Geothermal heat is recovered while maintaining ground heat recovery in the heat medium passages for the ground heat recovery of some groups and no heat recovery in the heat medium passages for the remaining groups. A ground heat recovery system using a pile for ground heat recovery, characterized in that it is provided with a control means for performing control to change the group for performing recovery over time (second invention). The above-described first and second effects are achieved.

本発明は、以上のとおりのものであるから、地中熱回収に使用する熱媒輸送駆動手段として能力の高いものを使用する必要がなく、しかも、地中熱の回収を効率良く行うことができる。   Since the present invention is as described above, it is not necessary to use a high-capacity heat medium transport drive means used for geothermal heat recovery, and the geothermal heat can be efficiently recovered. it can.

次に、本発明の実施最良形態を図面に基づいて説明する。   Next, the best mode for carrying out the present invention will be described with reference to the drawings.

図１〜図３に示す実施形態の地中熱回収システムにおいて、１…は基礎杭として用いられる地中熱回収用杭であり、各杭１は、図３に示すように、内部に地中熱回収用熱媒通路２を形成するＵ字管３が設けられた既成コンクリート杭からなっていて、水を熱媒とし、建物４の、例えばコンクリート布基礎５の下に布基礎５の延びる方向に、間隔的に多数本打ち込まれている。具体的には、建物が戸建て住宅用建物である場合には、例えば１５〜３０本程度打ち込まれる。   In the geothermal heat recovery system of the embodiment shown in FIGS. 1 to 3, 1... Is a ground heat recovery pile used as a foundation pile, and each pile 1 has an underground underground as shown in FIG. 3. A direction in which the cloth foundation 5 extends in the building 4 under the concrete cloth foundation 5, for example, using water as a heat medium. In addition, a large number of books are driven at intervals. Specifically, when the building is a detached house building, for example, about 15 to 30 pieces are driven.

本実施形態では、説明をわかりやすくするため、図１に示すように、システムを構成する杭１を９本としており、これら杭１…が第１〜第３の３つのグループ６，７，８に分けられ、各グループは３本の杭で構成され、各グループ６，７，８において、３本の杭の地中熱回収用熱媒通路２は直列状態に連通接続されて、グループの地中熱回収用熱媒通路を形成している。   In this embodiment, in order to make the explanation easy to understand, as shown in FIG. 1, nine piles 1 constituting the system are provided, and these piles 1... Are the first to third three groups 6, 7, 8. Each group is composed of three piles. In each group 6, 7 and 8, the heat medium passage 2 for ground heat recovery of the three piles is connected in series and connected to the ground of the group. A heat medium passage for medium heat recovery is formed.

また、入側と出側の対のヘッダー９，９が備えられ、各グループ６，７，８の地中熱回収用熱媒通路２…がこれら対のヘッダー９，９に連通状態に接続されると共に、該対のヘッダー９，９は主熱媒通路１０で接続されて、該主熱媒通路１０と前記各グループ６，７，８の地中熱回収用熱媒通路２…とで熱媒循環路が形成され、主熱媒通路１０には、熱媒輸送駆動手段としてのポンプ１４と、地中熱取出し部としての熱交換部１５とが設けられ、各グループ６，７，８の地中熱回収用熱媒通路２…には、グループ単位でそのグループの地中熱回収用熱媒通路を開閉する第１〜第３のバルブ１１，１２，１３が設けられている。   In addition, a pair of headers 9 and 9 on the entry side and the exit side are provided, and the heat medium passages 2 for ground heat recovery of each group 6, 7 and 8 are connected to the pair of headers 9 and 9 in communication. In addition, the pair of headers 9 and 9 are connected by a main heat medium passage 10, and heat is generated by the main heat medium passage 10 and the heat medium passages 2 for collecting the underground heat of the groups 6, 7, and 8. A medium circulation path is formed, and the main heat medium path 10 is provided with a pump 14 as a heat medium transport driving means and a heat exchanging section 15 as an underground heat extraction section. The ground heat recovery heat medium passages 2 are provided with first to third valves 11, 12, and 13 that open and close the underground heat recovery heat medium passages of the group in units of groups.

そして、１６が制御手段としての制御装置であり、該制御装置１６は、一つのグループのバルブを開にし、残り２つのグループのバルブを閉にした状態を維持しつつ、バルブを開にするグループを時間の経過に伴って順次に変更させていく制御を行うもので、時間の管理は、例えばタイマーで行うようにしてもよいし、あるいは、バルブを開にしているグループの杭の周囲側近の地中温度や、地中熱を回収した熱媒の温度等をセンサーで検知し、その温度が所定の温度を下回ったら、バルブを開にするグループを変更するというような制御が行われてもよいし、種々の方法が採られてよい。   Reference numeral 16 denotes a control device as a control means. The control device 16 opens a valve of one group and maintains a state in which the remaining two groups of valves are closed, and opens a group. The time is controlled by, for example, a timer, or near the periphery of the pile of the group in which the valve is open. Even if control is performed such as changing the group that opens the valve when the temperature of the ground medium, the temperature of the heat medium that recovered the ground heat, etc. is detected by a sensor and the temperature falls below the predetermined temperature Various methods may be adopted.

具体的には例えば、図２（イ）に示すように、第１バルブ１１を開、第２，第３バルブ１２，１３を閉にし、ポンプ１４で第１グループ６の地中熱回収用熱媒通路２のみによって地中熱の回収を行い、時間経過後、
図２（ロ）に示すように、第２バルブ１２を開、第１，第３バルブ１１，１３を閉に切り換え、第２グループ７の地中熱回収用熱媒通路２のみによって地中熱の回収を行い、時間経過後、
図２（ハ）に示すように、第３バルブ１３を開、第１，第２バルブ１１，１２を閉に切り換え、第３グループ８の地中熱回収用熱媒通路２のみによって地中熱の回収を行い、そして、
図２（イ）に示すように、第１バルブ１１を開、第２，第３バルブ１２，１３を閉に切り換え、第１グループ６の地中熱回収用熱媒通路２のみによる地中熱の回収を行うことを繰り返していく制御が行われる。 Specifically, for example, as shown in FIG. 2A, the first valve 11 is opened, the second and third valves 12 and 13 are closed, and the heat for ground heat recovery of the first group 6 by the pump 14 is used. The ground heat is recovered only by the medium passage 2, and after a lapse of time,
As shown in FIG. 2 (b), the second valve 12 is opened, the first and third valves 11 and 13 are switched to the closed state, and the ground heat is recovered only by the heat medium passage 2 for ground heat recovery of the second group 7. After the time has passed,
As shown in FIG. 2 (c), the third valve 13 is opened and the first and second valves 11, 12 are closed, and the ground heat is obtained only by the heat medium passage 2 for ground heat recovery of the third group 8. And collect
As shown in FIG. 2 (a), the first valve 11 is opened, the second and third valves 12 and 13 are switched to the closed state, and the ground heat generated only by the heat medium passage 2 for ground heat recovery of the first group 6 is obtained. The control of repeating the collection is performed.

上記のシステムでは、地面に打ち込まれた９本の杭１…が３つのグループ６，７，８に分けられ、そのうちの１つのグループの地中熱回収用熱媒通路で地中熱回収を行い、残り２つのグループの地中熱回収用熱媒通路での地中熱回収を行わない状態を維持しつつ、地中熱回収を行うグループを時間の経過に伴って変更させていく制御が行われるようになされているので、地中熱回収に使用するポンプ１４は、１つのグループの地中熱回収用熱媒通路で地中熱回収を行うことのできる能力を備えたものであればよく、高い能力を備えた高価で大型のポンプを使用する必要がない。しかも、杭の周囲の土砂が地中熱の回収によって熱を奪われても、停止中に杭の周囲に新たに地中熱が集まって回復することができ、各グループが効率良く地中熱を回収することができて、地中熱を効率良く回収することができる。加えて、上記のシステムでは、ヘッダー９，９とバルブ１１，１２，１３と、上記のような制御を行う制御装置１６とを採用しているので、一つのシステムにポンプ１４は一つでよく、使用するポンプの数を少なくすることができる。   In the above system, the nine piles 1... Driven into the ground are divided into three groups 6, 7 and 8, and ground heat recovery is performed in the heat medium passage for ground heat recovery of one group among them. In addition, while maintaining the state in which the ground heat recovery is not performed in the heat medium passage for the ground heat recovery of the remaining two groups, control is performed to change the group that performs the ground heat recovery over time. Therefore, the pump 14 used for geothermal heat recovery may be any pump that has the capability of performing geothermal heat recovery in one group of geothermal heat recovery heat medium passages. There is no need to use expensive and large pumps with high capacity. Moreover, even if the earth and sand around the pile is deprived of heat due to the recovery of geothermal heat, new heat can be gathered and recovered around the pile during the outage, allowing each group to efficiently Can be recovered, and the underground heat can be recovered efficiently. In addition, the above system employs the headers 9 and 9, the valves 11, 12, and 13 and the control device 16 that performs the control as described above, so one pump 14 is sufficient for one system. The number of pumps used can be reduced.

以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で各種の変更が可能である。例えば、上記の実施形態では、地中熱回収用杭１の地中熱回収用熱媒通路２がＵ字管３で形成されている場合を示したが、二重管式で地中熱回収用熱媒通路２を形成するようにしてもよく、杭についても、既成コンクリート杭に限らず、場所打ちコンクリート杭であってもよいし、その他、鋼管杭等であってもよい。   Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the ground heat recovery heat medium passage 2 of the underground heat recovery pile 1 is formed of the U-shaped pipe 3 is shown. The heat medium passage 2 may be formed, and the pile is not limited to the existing concrete pile but may be a cast-in-place concrete pile or a steel pipe pile.

また、制御方法として、例えば、第１，第２バルブ１１，１２を開、第３バルブ１３を閉にした状態から、時間経過後、第２，第３バルブ１２，１３を開、第１バルブ１１を閉にした状態に切り換え、時間経過後、第３，第１バルブ１３，１１を開、第２バルブ１２を閉にした状態に切り換え、第１，第２バルブ１１，１２を開、第３バルブ１３を閉にした状態に戻る繰り返しを行うようにしてもよいし、各種組み合わせで行われてもよい。システムを構成する杭１の本数や、グループの数、グループを構成する杭の数、グループを構成する杭の数が複数本である場合のそれらの直列、並列の接続関係等についても制限はなく、各種態様に決められてよい。   As a control method, for example, the first and second valves 11 and 12 are opened and the third valve 13 is closed. After a lapse of time, the second and third valves 12 and 13 are opened and the first valve is opened. 11 is switched to a closed state, and after a lapse of time, the third and first valves 13 and 11 are opened, the second valve 12 is switched to a closed state, the first and second valves 11 and 12 are opened, The three valves 13 may be repeatedly returned to the closed state, or may be performed in various combinations. There are no restrictions on the number of piles 1 that make up the system, the number of groups, the number of piles that make up a group, and the series and parallel connection relationships when there are multiple piles that make up a group. Various aspects may be determined.

また、上記の実施形態では、ヘッダー９と開閉バルブ１１，１２，１３を用いて構成した場合を示したが、これらヘッダーとバルブが例えば三方弁や四方弁等の弁装置として構成されていてもよい。   Moreover, although the case where it comprised using the header 9 and the opening-and-closing valves 11, 12, and 13 was shown in said embodiment, even if these headers and valves are comprised as valve apparatuses, such as a three-way valve and a four-way valve, for example. Good.

また、上記の実施形態では、熱媒として、水等の液を用いた場合を示したが、不凍液などのその他の液体、その他、空気などの気体、相変化を行う冷媒などが用いられてよく、また、熱媒輸送駆動手段についても、熱媒の種類等に応じて、ポンプに限らず、ファン等が用いられてもよい。   In the above embodiment, the case where a liquid such as water is used as the heat medium is shown. However, other liquids such as an antifreeze liquid, other gases such as air, and a refrigerant that changes phase may be used. Further, the heat medium transport driving means is not limited to the pump, and a fan or the like may be used depending on the type of the heat medium.

また、本発明では、地中熱回収用杭は、建物用の基礎杭に限らず、地中熱回収専用の杭であってもよい。   In the present invention, the underground heat recovery pile is not limited to a building foundation pile, and may be a dedicated pile for underground heat recovery.

更に、第２発明では、ヘッダーやバルブが省略され、一つのシステムにポンプが複数備えられていてもよい。   Furthermore, in the second invention, the header and the valve may be omitted, and a plurality of pumps may be provided in one system.

実施形態の地中熱回収システムを示す構成図である。It is a lineblock diagram showing the underground heat recovery system of an embodiment. 図（イ）〜図（ハ）は同システムの作動状態を示す説明図である。Drawing (a)-figure (c) are explanatory views showing the operating state of the system. 地中熱回収用杭を建物の基礎杭として打ち込んだ状態を示す断面正面図である。It is a sectional front view showing the state where a pile for underground heat recovery was driven in as a foundation pile of a building.

符号の説明Explanation of symbols

１…地中熱回収用杭
２…地中熱回収用熱媒通路
６…第１グループ
７…第２グループ
８…第３グループ
９…ヘッダー
１０…主熱媒通路
１１…第１バルブ
１２…第２バルブ
１３…第３バルブ
１４…ポンプ（熱媒輸送駆動手段）
１５…熱交換部（地中熱取出し部）
１６…制御装置（制御手段） DESCRIPTION OF SYMBOLS 1 ... Geothermal heat recovery pile 2 ... Geothermal heat recovery heat medium passage 6 ... First group 7 ... Second group 8 ... Third group 9 ... Header 10 ... Main heat medium passage 11 ... First valve 12 ... First 2 valve 13 ... 3rd valve 14 ... pump (heating medium transport drive means)
15 ... Heat exchange part (Ground heat extraction part)
16 ... Control device (control means)

Claims (2)

内部に地中熱回収用熱媒通路を備えた複数本の杭が地面に打ち込まれ、
これら杭は、少なくとも１本の杭からなる第１グループと、少なくとも１本の杭からなる第２杭グループとの少なくとも２つのグループに分けられ、
入側と出側の対のヘッダーが備えられて、各グループの地中熱回収用熱媒通路がこれら対のヘッダーに連通状態に接続されると共に、該対のヘッダーは主熱媒通路で接続されて、該主熱媒通路と前記地中熱回収用熱媒通路とで熱媒循環路が形成され、
前記主熱媒通路に、熱媒輸送駆動手段と地中熱取出し部とが設けられると共に、各グループの地中熱回収用熱媒通路にグループ単位でそのグループの地中熱回収用熱媒通路を開閉するバルブが設けられ、かつ、
一部のグループのバルブを開にし残りのグループのバルブを閉にした状態を維持しつつ、バルブを開にするグループを時間の経過に伴って変更させていく制御を行う制御手段が備えられていることを特徴とする、地中熱回収用杭を用いた地中熱回収システム。 Multiple piles with heat medium passages for underground heat recovery inside are driven into the ground,
These piles are divided into at least two groups, a first group comprising at least one pile and a second pile group comprising at least one pile,
A pair of headers on the inlet side and the outlet side are provided, and the heat medium passage for ground heat recovery of each group is connected to the pair of headers in a communicating state, and the header of the pair is connected by the main heat medium passage. A heat medium circulation path is formed by the main heat medium path and the underground heat recovery heat medium path,
The main heat medium passage is provided with a heat medium transport driving means and a ground heat extraction portion, and the heat medium passage for collecting the underground heat of the group in the heat medium passage for collecting the ground heat of each group. A valve that opens and closes, and
There is a control means for performing control to change the group that opens the valve over time while maintaining the state where the valves of some groups are opened and the valves of the remaining groups are closed. An underground heat recovery system using underground heat recovery piles. 内部に地中熱回収用熱媒通路を備えた複数本の杭が地面に打ち込まれ、
これら杭は、少なくとも１本の杭からなる第１グループと、少なくとも１本の杭からなる第２杭グループとの少なくとも２つのグループに分けられ、
一部のグループの地中熱回収用熱媒通路で地中熱回収を行い残りのグループの地中熱回収用熱媒通路での地中熱回収を行わない状態を維持しつつ、地中熱回収を行うグループを時間の経過に伴って変更させていく制御を行う制御手段が備えられていることを特徴とする、地中熱回収用杭を用いた地中熱回収システム。 Multiple piles with heat medium passages for underground heat recovery inside are driven into the ground,
These piles are divided into at least two groups, a first group comprising at least one pile and a second pile group comprising at least one pile,
Geothermal heat is recovered while maintaining ground heat recovery in the heat medium passages for the ground heat recovery of some groups and no heat recovery in the heat medium passages for the remaining groups. A ground heat recovery system using a pile for ground heat recovery, comprising a control means for performing control for changing a group for performing recovery over time.
JP2005102967A 2005-03-31 2005-03-31 Geothermal heat recovering system using pile for recovering geothermal heat Pending JP2006284065A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008320A (en) * 2007-06-28 2009-01-15 Oyo Kaihatsu Kk Bearing pile system for house-building-and-heat-exchange utilizing geothermal heat
JP2009250581A (en) * 2008-04-10 2009-10-29 Three Yuu:Kk Heating and cooling system using underground heat
JP2010145033A (en) * 2008-12-19 2010-07-01 Daikin Ind Ltd Underground heat exchanger and air conditioning system
JP2010532842A (en) * 2007-07-06 2010-10-14 グリーンフィールド エネジー リミテッド Geothermal energy system and method of operation
KR100989992B1 (en) 2009-04-16 2010-10-26 (주)티이엔 The operation control method for the multiple heat exchanger under the ground of geotheraml heat pumps systems
JP2011099668A (en) * 2009-11-05 2011-05-19 Tai-Her Yang Vertical fluid heat exchanger
GB2493536A (en) * 2011-08-10 2013-02-13 Caplin Solar Systems Ltd Borehole heat exchange assembly
KR101389410B1 (en) 2012-07-30 2014-05-27 주식회사 지지케이 Real time automatic control system of open ground heat exchanger
JP2015158354A (en) * 2009-11-05 2015-09-03 楊　泰和 Vertical type fluid heat exchanger

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JPH0517429U (en) * 1991-05-09 1993-03-05 福井県 Heat exchange system using foundation piles
JP2003253639A (en) * 2002-02-28 2003-09-10 Kowa:Kk Snow melting system and method
JP2003307355A (en) * 2002-04-16 2003-10-31 Misawa Kankyo Gijutsu Kk Heat radiation pipe device utilizing underground heat

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0517429U (en) * 1991-05-09 1993-03-05 福井県 Heat exchange system using foundation piles
JP2003253639A (en) * 2002-02-28 2003-09-10 Kowa:Kk Snow melting system and method
JP2003307355A (en) * 2002-04-16 2003-10-31 Misawa Kankyo Gijutsu Kk Heat radiation pipe device utilizing underground heat

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008320A (en) * 2007-06-28 2009-01-15 Oyo Kaihatsu Kk Bearing pile system for house-building-and-heat-exchange utilizing geothermal heat
JP2010532842A (en) * 2007-07-06 2010-10-14 グリーンフィールド エネジー リミテッド Geothermal energy system and method of operation
JP2009250581A (en) * 2008-04-10 2009-10-29 Three Yuu:Kk Heating and cooling system using underground heat
JP2010145033A (en) * 2008-12-19 2010-07-01 Daikin Ind Ltd Underground heat exchanger and air conditioning system
KR100989992B1 (en) 2009-04-16 2010-10-26 (주)티이엔 The operation control method for the multiple heat exchanger under the ground of geotheraml heat pumps systems
JP2011099668A (en) * 2009-11-05 2011-05-19 Tai-Her Yang Vertical fluid heat exchanger
JP2015158354A (en) * 2009-11-05 2015-09-03 楊　泰和 Vertical type fluid heat exchanger
JP2017053622A (en) * 2009-11-05 2017-03-16 楊　泰和 Vertical type fluid heat exchanger
GB2493536A (en) * 2011-08-10 2013-02-13 Caplin Solar Systems Ltd Borehole heat exchange assembly
GB2493536B (en) * 2011-08-10 2013-09-25 Caplin Solar Systems Ltd Thermal energy stores and heat exchange assemblies therefor
KR101389410B1 (en) 2012-07-30 2014-05-27 주식회사 지지케이 Real time automatic control system of open ground heat exchanger

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