JP2005337590A - Underground heat sampling unit - Google Patents

Underground heat sampling unit Download PDF

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Publication number
JP2005337590A
JP2005337590A JP2004157170A JP2004157170A JP2005337590A JP 2005337590 A JP2005337590 A JP 2005337590A JP 2004157170 A JP2004157170 A JP 2004157170A JP 2004157170 A JP2004157170 A JP 2004157170A JP 2005337590 A JP2005337590 A JP 2005337590A
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pipe
heat
heat exchange
pump
liquid tank
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JP4316424B2 (en
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Kuniaki Sakurai
邦昭 桜井
Katsuhiko Koyama
克彦 小山
Yasuhiro Oba
康宏 大庭
Motohiro Yoshio
元宏 吉尾
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KAMEYAMA TEKKOSHO
Kameyama Tekkosho KK
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KAMEYAMA TEKKOSHO
Kameyama Tekkosho KK
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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Structures (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small underground heat sampling device with heat exchange pipes and a lifting pump into one unit. <P>SOLUTION: The plurality of U-bent heat exchange pipes 2 are cylindrically combined, and the pipes each have one end connected to a circular liquid tank 3 on the upper part of the unit and the other end connected to the lower part of a pump chamber cylinder 5 extending downward through the center of the liquid tank. An air-lift pump 9 is stored in the pump chamber cylinder 5. The heat exchange pipes 2 are peripherally covered with a screen 11 and installed in a hole formed in a ground surface so that the heat exchange pipes 2 can be immersed in ground water 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、地下熱を採取して路面の融雪や建物の暖房の熱源などにに利用する技術に関する。   The present invention relates to a technique for collecting underground heat and using it for melting snow on a road surface or a heat source for heating a building.

地中の温度は年間を通して温度変化が少なく、気温に比べて冬は高く、夏は低い。そこで、冬季に地下水を汲み上げて散水すれば路面の融雪を行うことができる。また、暖房用のヒートポンプの熱源に利用することもできる。しかし地下水を汲み上げると様々な環境破壊を招き易い。   The temperature in the ground is less variable throughout the year and is higher in winter and lower in summer than temperature. Therefore, it is possible to melt snow on the road surface by pumping up groundwater in the winter season and spraying it. It can also be used as a heat source for a heat pump for heating. However, pumping up groundwater tends to cause various environmental destruction.

そこで、熱媒体を通した管を地中深くに埋設し、熱媒体を介して地下熱を地上に取り出すようにする方法が従来用いられている（例えば特許公開２００１−１４７０５６号公報）。しかし、従来の装置は、大掛かりなもので、比較的小さな面積の融雪などには適さない。   Therefore, a method of burying a pipe through which a heat medium passes deeply in the ground and taking out underground heat to the ground via the heat medium has been conventionally used (for example, Japanese Patent Publication No. 2001-147056). However, the conventional apparatus is large and is not suitable for melting snow with a relatively small area.

この発明は、熱交換パイプと揚液ポンプをユニット化した小形地熱採取装置を提供することを課題とする。   This invention makes it a subject to provide the small-sized geothermal sampling apparatus which unitized the heat exchange pipe and the pump.

この発明の地下熱採取ユニットは、熱媒体としての液体を溜める液体槽と、該液体槽から下方に延びた後、反転して上方に延びる、筒状に束ねられた複数本の熱交換パイプと、該熱交換パイプの筒束の略中心に配置され、該熱交換パイプの上端に接続されるポンプ室筒体と、該筒体の中に収納された、揚液管およびその中に圧縮空気を吹き込むための空気管からなるエアーリフトポンプを備えている。揚液管から送出される熱媒体は熱機器に供給し、戻りの熱媒体は該液体槽に還される（請求項１）。   The underground heat collection unit of the present invention includes a liquid tank for storing a liquid as a heat medium, and a plurality of heat exchange pipes that are bundled in a cylindrical shape that extends downward from the liquid tank and then extends upward. A pump chamber cylinder which is arranged at substantially the center of the tube bundle of the heat exchange pipe and connected to the upper end of the heat exchange pipe, a pumping pipe housed in the cylinder, and compressed air therein The air lift pump which consists of an air pipe for blowing in is provided. The heat medium sent out from the pump is supplied to the heat equipment, and the returned heat medium is returned to the liquid tank (claim 1).

この地下熱採取ユニットは、熱交換パイプと揚液ポンプを一体化したものであり、複数本の熱交換パイプを筒状に束ね、束の略中心にポンプを配置したのでコンパクトに構成でき、地面に穿った穴に挿入するだけで、簡単に設置することができる。また、熱媒体の揚液にエアーリフトポンプを用いたので、可動部がなく構造が簡単であり、地中において長期間運転しても故障の心配がない。   This underground heat sampling unit integrates a heat exchange pipe and a pump, and bundles a plurality of heat exchange pipes in a cylindrical shape and places the pump at the approximate center of the bundle, so it can be compactly configured and It can be installed simply by inserting it into the hole. In addition, since an air lift pump is used for pumping the heat medium, there is no moving part, the structure is simple, and there is no fear of failure even if it is operated for a long time in the ground.

なお、ユニットの周囲はスクリーンで筒状に覆い、地下水は自由に入ってくるが土砂は入らないようにするとよい（請求項２）。   The periphery of the unit should be covered in a cylindrical shape with a screen so that groundwater can freely enter but no earth or sand can enter (claim 2).

この地熱採取ユニットは、融雪用加熱パイプをはじめ、暖房または給湯用ヒートポンプなど各種の熱機器に熱エネルギーを供給することが可能である（請求項３または４）。   This geothermal sampling unit can supply thermal energy to various heat devices such as a snow melting heating pipe, a heating pump or a hot water supply heat pump (Claim 3 or 4).

この地下熱採取ユニット１は、図に示すように、Ｕ字状に折曲した熱交換パイプ２が複数本（図では８本）、筒状に束ねられており、各パイプの一端はユニット上部の円形の液体槽３に接続しており、他端は、液体槽３の中心を貫いて下方に延びるポンプ室筒体５の下部に接続している。筒体５の下には支柱６が延びており、該支柱に固定された円形支持板７に熱交換パイプ２が支持されている。   As shown in the figure, this underground heat collection unit 1 has a plurality of U-shaped heat exchange pipes 2 (eight in the figure) bundled in a cylindrical shape, and one end of each pipe is at the top of the unit. The other end is connected to the lower part of the pump chamber cylinder 5 that extends downward through the center of the liquid tank 3. A column 6 extends under the cylinder 5, and the heat exchange pipe 2 is supported on a circular support plate 7 fixed to the column.

ポンプ室筒体５の中にエアーリフトポンプ９が収められており、該ポンプは揚液管９ａとその中を通る空気管９ｂから構成される。揚液管９ａの潜り（水面下の長さ)は必要とするポンプ揚程の少なくとも２倍以上とるようにする。空気管９ｂは、図では揚液管９ａの中に通してあるが、揚液管の外に置いたほうが揚液の摩擦損失が少なくなる。空気管９ｂには外部のエアーコンプレサ１０から圧縮空気が供給される。   An air lift pump 9 is housed in the pump chamber cylinder 5, and the pump is composed of a pumping pipe 9a and an air pipe 9b passing therethrough. The diving (the length below the water surface) of the pumping pipe 9a is set to be at least twice the required pump head. The air pipe 9b is passed through the pumped liquid pipe 9a in the figure, but the friction loss of the pumped liquid is reduced when placed outside the pumped liquid pipe. Compressed air is supplied to the air pipe 9b from an external air compressor 10.

このユニットは、熱交換パイプ２を保護するために、その周りをスクリーン１１（例えば孔あき板）で覆ってあり、地面に縦穴を掘って、その中に設置し、熱交換パイプ２が地下水１２に浸かるようする。   In order to protect the heat exchange pipe 2, the unit is covered with a screen 11 (for example, a perforated plate), a vertical hole is dug in the ground, and the heat exchange pipe 2 is installed in the ground water 12. Soak in.

この装置を融雪に使用するために、路面の表面近く（例えば表面下100mm）に融雪用加熱パイプ１３を埋設し、その一端をポンプの揚液管９ａの先に接続し、他端は液体槽３に接続する。なお、融雪パイプには架橋ポリエチレン製のフレキシブル管を用いた。   In order to use this apparatus for melting snow, a snow melting heating pipe 13 is embedded near the surface of the road surface (for example, 100 mm below the surface), one end of which is connected to the tip of the pumping pipe 9a, and the other end is a liquid tank. Connect to 3. In addition, the flexible pipe made from a crosslinked polyethylene was used for the snowmelt pipe.

管系をすべて熱媒体（例えば不凍液）で満たし、空気管９ｂに圧搾空気を供給すると、空気管の下端から噴出する気体が揚液管９ａの中を気泡となって立ち昇る。気泡が混ざると比重が小さくなるので、揚液管９ａの液面は液体槽３の液面より高くなり、その液面差がポンプの揚程となる。このため、揚液管内から熱媒体が融雪パイプ１３に向かって送り出され、融雪パイプ通過後の熱媒体は液体槽３に帰り、さらに熱交換パイプ２を通ってポンプ室筒体５に再び戻ってくる。   When the entire pipe system is filled with a heat medium (for example, antifreeze) and compressed air is supplied to the air pipe 9b, the gas ejected from the lower end of the air pipe rises as bubbles in the lifted pipe 9a. When bubbles are mixed, the specific gravity decreases, so that the liquid level of the liquid pumping tube 9a becomes higher than the liquid level of the liquid tank 3, and the liquid level difference becomes the pump head. For this reason, the heat medium is sent out from the pumped pipe toward the snow melting pipe 13, the heat medium after passing through the snow melting pipe returns to the liquid tank 3, and further returns to the pump chamber cylinder 5 through the heat exchange pipe 2. come.

このように、熱媒体は管系の中を常に循環しており、熱交換パイプ２を通過する間に地下水１２から熱を吸収し、融雪パイプ１３を通過するときに保有している熱で路面の雪や氷を融かすことができる。この装置は、熱交換パイプを下方に長く延ばすことにより、熱出力の大きなものを作ることが可能である。   In this way, the heat medium constantly circulates in the pipe system, absorbs heat from the ground water 12 while passing through the heat exchange pipe 2, and the road surface with the heat held when passing through the snow melting pipe 13. The snow and ice can be melted. This apparatus can make a thing with a large heat output by extending a heat exchange pipe long below.

地下熱採取ユニットの説明図である。It is explanatory drawing of an underground heat extraction unit.

符号の説明Explanation of symbols

１ 地下熱採取ユニット
２ 熱交換パイプ
３ 液体槽
５ ポンプ室筒体
９ エアーリフトポンプ
９ａ 揚液管
９ｂ 空気管
１１ スクリーン
１３ 熱機器としての融雪用加熱パイプ DESCRIPTION OF SYMBOLS 1 Subsurface heat collection unit 2 Heat exchange pipe 3 Liquid tank 5 Pump chamber cylinder 9 Air lift pump 9a Pumped liquid pipe 9b Air pipe 11 Screen 13 Heating pipe for melting snow as thermal equipment

Claims (4)

熱媒体としての液体を溜める液体槽と、該液体槽から下方に延びた後、反転して上方に延びる、筒状に束ねられた複数本の熱交換パイプと、該熱交換パイプの筒束の略中心に配置され、該熱交換パイプの上端に接続されるポンプ室筒体と、該筒体の中に収納された、揚液管およびその中に圧縮空気を吹き込むための空気管からなるエアーリフトポンプを備え、該揚液管から送出される熱媒体を熱機器に供給し、戻りの熱媒体を該液体槽に還すようにした地下熱採取ユニット。   A liquid tank for storing a liquid as a heat medium, a plurality of heat exchange pipes that are bundled in a cylindrical shape, extending downward from the liquid tank and then extending upward, and a tube bundle of the heat exchange pipes. A pump chamber cylinder that is disposed substantially at the center and connected to the upper end of the heat exchange pipe, and an air pipe that is housed in the cylinder and includes a liquid pump pipe and an air pipe for blowing compressed air therein. An underground heat collection unit that includes a lift pump, supplies a heat medium sent from the pumped liquid pipe to a heat device, and returns the returned heat medium to the liquid tank. 周囲をスクリーンで筒状に覆った請求項１に記載の地下熱採取ユニット。   The underground heat collection unit according to claim 1, wherein the periphery is covered with a screen in a cylindrical shape. 該熱機器が融雪用加熱パイプである請求項１に記載の地下熱採取ユニット。   The underground heat extraction unit according to claim 1, wherein the thermal device is a snow melting heating pipe. 該熱機器が暖房または給湯用ヒートポンプである請求項１に記載の地下熱採取ユニット。   The underground heat collection unit according to claim 1, wherein the thermal device is a heat pump for heating or hot water supply.
JP2004157170A 2004-05-27 2004-05-27 Underground heat sampling unit Expired - Fee Related JP4316424B2 (en)

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JP4316424B2 JP4316424B2 (en) 2009-08-19

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223224A (en) * 2007-03-08 2008-09-25 Ch Takano:Kk Piping method for radiating pipe
JP2008256227A (en) * 2007-03-31 2008-10-23 Okayama Univ Water circulation type environment control system
JP2009002595A (en) * 2007-06-22 2009-01-08 Bescon Service:Kk Efficient heat collection system for underground heat well
JP2010014359A (en) * 2008-07-04 2010-01-21 Kanden Energy Development Co Ltd Method and structure for burying ground heat exchanger tube
WO2011005168A1 (en) * 2009-07-06 2011-01-13 Fredrik Stenwreth Ab Device and method for energy well
JP2011094952A (en) * 2009-10-28 2011-05-12 Tai-Her Yang Thermal conductive cylinder
CN102393101A (en) * 2011-09-14 2012-03-28 上海吉益能源技术有限公司 3U ground heat exchanger
JP2014185822A (en) * 2013-03-25 2014-10-02 Mitsui Kagaku Sanshi Kk Geothermal heat utilization heat exchanger and heat pump system using the same
CN111121318A (en) * 2019-12-30 2020-05-08 陈书祯 Geothermal well heat energy extraction system and geothermal well heat energy extraction method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223224A (en) * 2007-03-08 2008-09-25 Ch Takano:Kk Piping method for radiating pipe
JP2008256227A (en) * 2007-03-31 2008-10-23 Okayama Univ Water circulation type environment control system
JP2009002595A (en) * 2007-06-22 2009-01-08 Bescon Service:Kk Efficient heat collection system for underground heat well
JP4486663B2 (en) * 2007-06-22 2010-06-23 有限会社ベスコンサービス Highly efficient heat collection system for geothermal wells
JP2010014359A (en) * 2008-07-04 2010-01-21 Kanden Energy Development Co Ltd Method and structure for burying ground heat exchanger tube
WO2011005168A1 (en) * 2009-07-06 2011-01-13 Fredrik Stenwreth Ab Device and method for energy well
JP2011094952A (en) * 2009-10-28 2011-05-12 Tai-Her Yang Thermal conductive cylinder
CN102393101A (en) * 2011-09-14 2012-03-28 上海吉益能源技术有限公司 3U ground heat exchanger
JP2014185822A (en) * 2013-03-25 2014-10-02 Mitsui Kagaku Sanshi Kk Geothermal heat utilization heat exchanger and heat pump system using the same
CN111121318A (en) * 2019-12-30 2020-05-08 陈书祯 Geothermal well heat energy extraction system and geothermal well heat energy extraction method
CN111121318B (en) * 2019-12-30 2021-07-20 陈书祯 Geothermal well heat energy extraction system and geothermal well heat energy extraction method

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