JP5809786B2 - Geothermal heat pump system - Google Patents
Geothermal heat pump system Download PDFInfo
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- JP5809786B2 JP5809786B2 JP2010187490A JP2010187490A JP5809786B2 JP 5809786 B2 JP5809786 B2 JP 5809786B2 JP 2010187490 A JP2010187490 A JP 2010187490A JP 2010187490 A JP2010187490 A JP 2010187490A JP 5809786 B2 JP5809786 B2 JP 5809786B2
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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
- Y02B10/40—Geothermal heat-pumps
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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
- 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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- Central Air Conditioning (AREA)
- Other Air-Conditioning Systems (AREA)
Description
本発明は、地熱と室内空気の熱とを熱交換する地熱利用型のヒートポンプシステムに関する。 The present invention relates to a geothermal heat pump system that exchanges heat between geothermal heat and indoor air.
従来、建物に設置され、地熱を利用するヒートポンプシステムが知られている（例えば特許文献１参照）。 Conventionally, a heat pump system that is installed in a building and uses geothermal heat is known (see, for example, Patent Document 1).
近年、日本人口は減少しつつあるが、人口が都市に密集する傾向にあるため都市近郊の住宅事情は悪化し、建物周囲のスペースが十分に得られず、極力スペースを確保することが望まれている。 In recent years, the population of Japan has been decreasing, but since the population tends to be concentrated in the city, housing conditions in the suburbs of the city have deteriorated, and there is not enough space around the building, so it is desirable to secure as much space as possible. ing.
本発明は上記課題に鑑み、建物周囲のスペースをより確保することができるヒートポンプシステムを提供することを目的とする。 An object of this invention is to provide the heat pump system which can ensure the space around a building more in view of the said subject.
本発明に係る地熱利用型のヒートポンプシステムは、地中に埋設された採熱杭と、建物内を空調するためのヒートポンプの熱交換器を有したヒートポンプユニットと、前記熱交換器と前記採熱杭とを経由するように設けられた熱搬送流体の循環流路と、該循環流路に満たされた熱搬送流体と、該熱搬送流体を循環させるためのポンプと、を備え、前記循環により地盤と前記建物の室内空気との熱交換をする地熱利用型のヒートポンプシステムにおいて、前記ヒートポンプユニットは前記建物の床下空間に設置されていることを特徴とする。 The geothermal heat pump system according to the present invention includes a heat collection pile buried in the ground, a heat pump unit having a heat pump heat exchanger for air conditioning the building, the heat exchanger, and the heat collection. A heat transfer fluid circulation path provided so as to pass through the pile, a heat transfer fluid filled in the circulation path, and a pump for circulating the heat transfer fluid. In the heat pump system using geothermal heat for exchanging heat between the ground and the indoor air of the building, the heat pump unit is installed in an underfloor space of the building.
また、前記採熱杭は前記建物の構造杭でもあってもよく、前記採熱杭が埋設されている位置の地表面が断熱材で覆われていてもよい。 Moreover, the said heat collection pile may be a structural pile of the said building, and the ground surface of the position where the said heat collection pile is embed | buried may be covered with the heat insulating material.
ここで、「断熱材」とは、一般的な断熱材のみならず、断熱性を高める部材が含まれる。例えば、構造杭と採熱杭が兼用される場合に建物の基礎コンクリートも断熱材に含まれる。 Here, the “heat insulating material” includes not only a general heat insulating material but also a member that enhances heat insulating properties. For example, when a structural pile and a heat collecting pile are used together, the foundation concrete of a building is also included in the heat insulating material.
さらに、前記ヒートポンプシステムが寒冷地域に設けられる場合には、前記循環流路が地中の水道管まわりに設置されていてもよい。 Furthermore, when the heat pump system is provided in a cold region, the circulation channel may be installed around an underground water pipe.
本発明によれば、ヒートポンプユニットが前記建物の床下空間に設置されているので、建物周囲のスペースをより確保することができる。また、前記採熱杭が前記建物の構造杭であれば、採熱杭の埋設が不要となる上に地中の埋設物が減る。 According to the present invention, since the heat pump unit is installed in the under-floor space of the building, a space around the building can be further secured. Moreover, if the said heat collecting pile is a structural pile of the said building, the burying of a heat collecting pile will become unnecessary and the underground buried object will decrease.
また、前記採熱杭が埋設されている位置の地表面が断熱材で覆われていれば、断熱材により外気と地中との断熱性が高まるため、採熱杭は外気温の影響を受けにくくなる。このため、エネルギーロスが少なく地熱利用効率が高まる。 In addition, if the ground surface at the position where the heat collecting pile is buried is covered with a heat insulating material, the heat insulating material enhances the heat insulation between the outside air and the ground, so the heat collecting pile is affected by the outside air temperature. It becomes difficult. For this reason, there is little energy loss and geothermal utilization efficiency increases.
さらに、前記ヒートポンプシステムが寒冷地域に設けられるものであって、前記循環流路が地中の水道管まわりに設置されていれば、水道管の凍結防止につながる。 Furthermore, if the heat pump system is provided in a cold region and the circulation channel is installed around the underground water pipe, the water pipe is prevented from freezing.
以下、本発明の実施の形態を図１〜図４を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to FIGS.
本発明は、従来では庭などの建物の周囲に配置していたヒートポンプユニット（エアコンの室外機等）を建物の床下空間に配置することで、建物の外周スペースを有効活用することができる。また、ヒートポンプの熱交換の一部を、冷媒との温度差が外気よりある大地との間で行うことで、冷暖房の費用を軽減することができ、外気との熱交換用ファンも不要となる。 The present invention can effectively utilize the outer peripheral space of a building by arranging a heat pump unit (such as an outdoor unit of an air conditioner) that has been conventionally arranged around a building such as a garden in an underfloor space of the building. Also, by performing part of the heat exchange of the heat pump with the ground where the temperature difference from the refrigerant is from the outside air, the cost of air conditioning can be reduced, and a fan for heat exchange with the outside air becomes unnecessary. .
[第１実施形態]
第１実施形態の地熱利用型のヒートポンプシステム１０は、図１および図４に示すように、建物１Ａの床下空間Ｒ０に設置されたヒートポンプユニットＨＰと、建物１Ａの構造杭として地中に埋設された採熱杭２と、ヒートポンプユニットＨＰと採熱杭２とを循環するように配管された循環流路としての不凍液管３と、不凍液管３に満たされた熱搬送流体としての不凍液と、不凍液を循環させるポンプＰ１と、ヒートポンプユニットＨＰからの冷媒と室内Ｒ１の空気とを熱交換する床下熱交換器ＨＴ等とを有している。
[First embodiment]
As shown in FIGS. 1 and 4, the geothermal heat pump system 10 of the first embodiment is embedded in the ground as a heat pump unit HP installed in the underfloor space R0 of the building 1A and a structural pile of the building 1A. The antifreeze liquid pipe 3 as a circulation flow path piped so as to circulate between the heat collecting pile 2, the heat pump unit HP and the heat collecting pile 2, the antifreeze liquid as the heat transfer fluid filled in the antifreeze liquid pipe 3, and the antifreeze liquid , And an underfloor heat exchanger HT for exchanging heat between the refrigerant from the heat pump unit HP and the air in the room R1.
図１に示すように、採熱杭２、ヒートポンプユニットＨＰおよび床下熱交換器ＨＴは、互いに近接配置されている。
＜床下熱交換器＞
床下熱交換器ＨＴは、一般のエアコンでは室内機に相当し、ヒートポンプユニットＨＰと同様に建物１Ａの床下空間Ｒ０に設けられている。床下熱交換器ＨＴは、図４に示すように、筐体と、筐体中に回転可能に設けられたファン９と、第１熱交換器８Ｅ等とを有している。筐体にはヒートポンプユニットＨＰからの冷媒管４が入出し、筐体内の冷媒管４部分には第１熱交換器８Ｅが設けられている。
As shown in FIG. 1, the heat collecting pile 2, the heat pump unit HP, and the underfloor heat exchanger HT are arranged close to each other.
<Underfloor heat exchanger>
The underfloor heat exchanger HT corresponds to an indoor unit in a general air conditioner, and is provided in the underfloor space R0 of the building 1A like the heat pump unit HP. As shown in FIG. 4, the underfloor heat exchanger HT includes a housing, a fan 9 provided rotatably in the housing, a first heat exchanger 8E, and the like. A refrigerant pipe 4 from the heat pump unit HP enters and exits the casing, and a first heat exchanger 8E is provided in the refrigerant pipe 4 portion in the casing.
この筐体には室内Ｒ１からのエアーの取込口と排出口が設けられており、それぞれに接続された吸気ダクト５および給気ダクト６を介して室内Ｒ１と筐体内がエアー環流するように連通している。 This housing is provided with an intake port and an exhaust port for air from the room R1, so that the room R1 and the inside of the case circulate through the intake duct 5 and the air supply duct 6 connected to each. Communicate.
ファン９の回転により室内Ｒ１の空気が吸気ダクト５を介して筐体内へ取り込まれて、第１熱交換器８Ｅで熱交換された後、給気ダクト６を通じて室内Ｒ０に吹き出るようになっている。
＜ヒートポンプユニット＞
ヒートポンプユニットＨＰは、一般のエアコンでは室外機に相当し、建物１Ａの床下空間Ｒ０に設けられている。ヒートポンプユニットＨＰは、エアコンでの熱交換サイクル（ヒートポンプ）の他の要素である、膨張弁８Ｃ、コンプレッサ８Ｂ、熱交換器としての第２熱交換器８Ｄ、切替スイッチ８Ａを有し、これらは冷媒管４で接続されている（図４参照）。
The air in the room R1 is taken into the housing through the intake duct 5 by the rotation of the fan 9 and is heat-exchanged by the first heat exchanger 8E, and then blown out into the room R0 through the air supply duct 6. .
<Heat pump unit>
The heat pump unit HP corresponds to an outdoor unit in a general air conditioner, and is provided in the underfloor space R0 of the building 1A. The heat pump unit HP includes an expansion valve 8C, a compressor 8B, a second heat exchanger 8D as a heat exchanger, and a changeover switch 8A, which are other elements of a heat exchange cycle (heat pump) in an air conditioner. They are connected by a pipe 4 (see FIG. 4).
ヒートポンプユニットＨＰには採熱杭２からの不凍液管３が入出し、不凍液管３はヒートポンプユニットＨＰ内で第２熱交換器８Ｄを経由するように配管され、不凍液が冷媒管４内の冷媒と熱交換可能となっている。 The antifreeze pipe 3 from the heat collecting pile 2 enters and exits the heat pump unit HP, and the antifreeze pipe 3 is piped through the second heat exchanger 8D in the heat pump unit HP, and the antifreeze liquid is separated from the refrigerant in the refrigerant pipe 4. Heat exchange is possible.
その一方で、ヒートポンプユニットＨＰから引き出された不凍液管３は、建物１Ａの床下空間Ｒ０の床版内を通過し、建物１Ａの構造杭（採熱杭２）内を巡るように配管されている。また、不凍液管３には不凍液を圧送するポンプＰ１（図４参照）が接続されている。
＜熱の流れ＞
図４に示すように、ヒートポンプユニットＨＰの切替スイッチ８Ａにより熱交換サイクルの冷媒の循環方向（切り替えスイッチ〜コンプレッサ８Ｂ間以外）が逆となり、暖房と冷房の切り替えが行われる。そのため、第２熱交換器８Ｄでの冷媒と不凍液との熱交換（放熱・吸熱）も切り替えられる。
On the other hand, the antifreeze liquid pipe 3 drawn out from the heat pump unit HP passes through the floor slab of the underfloor space R0 of the building 1A and is piped so as to go around the structural pile (heat collecting pile 2) of the building 1A. . The antifreeze pipe 3 is connected to a pump P1 (see FIG. 4) that pumps the antifreeze liquid.
<Heat flow>
As shown in FIG. 4, the refrigerant switch direction (except between the changeover switch and the compressor 8B) in the heat exchange cycle is reversed by the changeover switch 8A of the heat pump unit HP, and switching between heating and cooling is performed. Therefore, heat exchange (heat radiation / heat absorption) between the refrigerant and the antifreeze liquid in the second heat exchanger 8D is also switched.
図１の矢印に示すように、ヒートポンプユニットＨＰと不凍液のポンプＰ１を稼動させて冷媒と不凍液の熱交換サイクルをさせると、夏季の冷房と冬季の暖房の場合のそれぞれで、以下のように熱交換される。 As shown by the arrows in FIG. 1, when the heat pump unit HP and the antifreeze liquid pump P1 are operated and the heat exchange cycle of the refrigerant and the antifreeze liquid is performed, the following heat is applied in each of the cooling in the summer and the heating in the winter. Exchanged.
夏季の冷房の場合、室内Ｒ１の空気の熱が第１熱交換器８Ｅで冷媒管４の冷媒に吸熱され、この冷媒がコンプレッサ８Ｂで圧縮された後、第２熱交換器８Ｄで不凍液へ放熱する。吸熱した不凍液がポンプＰ１の圧送により採熱杭２まで搬送され、採熱杭２内で地盤へ放熱して第２熱交換器８Ｄに戻ってくる。 In the case of cooling in summer, the heat of the air in the room R1 is absorbed by the refrigerant in the refrigerant pipe 4 by the first heat exchanger 8E, and after the refrigerant is compressed by the compressor 8B, the heat is radiated to the antifreeze by the second heat exchanger 8D. To do. The antifreezing liquid that has absorbed heat is conveyed to the heat collecting pile 2 by pumping the pump P1, radiates heat to the ground within the heat collecting pile 2, and returns to the second heat exchanger 8D.
冬季の暖房の場合、地熱が採熱杭２内で不凍液に吸熱され、吸熱した不凍液がポンプＰ１の圧送により第２熱交換器８Ｄまで搬送されてくる。第２熱交換器８Ｄでは、搬送された不凍液から膨張弁８Ｃを通過した低温・低圧の冷媒へ放熱し、冷媒が加温される。この冷媒はコンプレッサ８Ｂで圧縮され、冷媒圧縮により生じる熱とともに不凍液由来の熱は第１熱交換器８Ｅにて室内Ｒ１の空気へ放熱される。
以下、ヒートポンプシステム１０により奏される効果を説明する。
In the case of heating in the winter season, geothermal heat is absorbed by the antifreeze liquid in the heat collecting pile 2, and the absorbed antifreeze liquid is conveyed to the second heat exchanger 8D by the pump P1. In the second heat exchanger 8D, heat is radiated from the conveyed antifreeze liquid to the low-temperature and low-pressure refrigerant that has passed through the expansion valve 8C, and the refrigerant is heated. This refrigerant is compressed by the compressor 8B, and the heat generated by the refrigerant compression and the heat derived from the antifreeze liquid are radiated to the air in the room R1 by the first heat exchanger 8E.
Hereinafter, the effect produced by the heat pump system 10 will be described.
ヒートポンプユニットＨＰが建物１Ａの床下空間Ｒ０に収納されることで、建物１Ａの周囲にヒートポンプユニットＨＰを置く必要がなく、建物１Ａの周囲を広く有効に使うことができる。また、ヒートポンプユニットＨＰを床下空間Ｒ０に設置するので建物１Ａの外に置くよりエネルギーロスが少ない。また、窓を介した室外機のファン９の音がなくなり騒音も減る。 By storing the heat pump unit HP in the underfloor space R0 of the building 1A, it is not necessary to place the heat pump unit HP around the building 1A, and the periphery of the building 1A can be used widely and effectively. In addition, since the heat pump unit HP is installed in the underfloor space R0, energy loss is less than when it is placed outside the building 1A. Also, the noise of the outdoor unit fan 9 through the window is eliminated and the noise is reduced.
採熱杭２、ヒートポンプユニットＨＰおよび床下熱交換器ＨＴが互いに近接配置されているので、ヒートポンプシステム１０の設置等の際の施工性が高まる。 Since the heat collecting pile 2, the heat pump unit HP, and the underfloor heat exchanger HT are arranged close to each other, the workability during installation of the heat pump system 10 and the like is improved.
建物１Ａの構造杭と採熱杭が兼用されているので、別に採熱杭を設ける必要がなく、この点でも施工性が高まり、その設置費用と手間も省略できる。 Since the structural pile and the heat collecting pile of the building 1A are used together, it is not necessary to provide a separate heat collecting pile. In this respect, the workability is improved and the installation cost and labor can be omitted.
不凍液は搬送中に不凍液管の壁を介して配管周りの土や建築物等と意図しない熱交換をするためエネルギーロスが生じるが、上述のように採熱杭２、ヒートポンプユニットＨＰおよび床下熱交換器ＨＴが互いに近接配置されていることから、不凍液の搬送距離が短くて済み、エネルギーロスが少なくなる。 The antifreeze will cause energy loss due to unintentional heat exchange with the soil and buildings around the pipe through the wall of the antifreeze pipe during transportation, but as mentioned above, the heat collecting pile 2, the heat pump unit HP and the underfloor heat exchange. Since the containers HT are arranged close to each other, the transport distance of the antifreeze liquid can be shortened and energy loss is reduced.
また、採熱杭２が構造杭として建物１Ａの直下に埋設されていることから、採熱杭２を建物１Ａの外郭に埋設するよりも不凍液の搬送距離が短くて済み、その分エネルギーロスが少なくなる。 In addition, since the heat collection pile 2 is buried as a structural pile directly under the building 1A, the transport distance of the antifreeze liquid can be shorter than that of the heat collection pile 2 buried in the outer wall of the building 1A, and the energy loss is correspondingly reduced. Less.
不凍液管３が建物１Ａの床下空間Ｒ０の床版中を通過するように設けられているので、建物１Ａの内外の断熱効果が高まる。また、床版が断熱材としても機能する。 Since the antifreeze pipe 3 is provided so as to pass through the floor slab of the underfloor space R0 of the building 1A, the heat insulating effect inside and outside the building 1A is enhanced. The floor slab also functions as a heat insulating material.
第１実施形態は、本発明から逸脱しない限り例えば以下のように変更することができる。 For example, the first embodiment can be modified as follows without departing from the present invention.
床下熱交換器ＨＴで床暖房の熱媒体（水等）を加熱・冷却するように構成してもよい。これにより、冬の床暖房の効率化だけでなく夏季にも床冷却をおこなうことができる。 You may comprise so that the heat medium (water etc.) of floor heating may be heated and cooled with the underfloor heat exchanger HT. Thereby, floor cooling can be performed not only in winter floor heating but also in summer.
また、床下熱交換器ＨＴに接続した吸気ダクト５や給気ダクト６を取り除いて、床下空間Ｒ０の空気を加熱又は冷却してもよい。これにより、床暖房や床冷却に近い効果を得ることができる。また、冬季の加熱では床下空間Ｒ０の結露等が防止され、カビ発生防止効果が得られ、調湿剤の使用量も少なくてすむ。 Further, the air in the underfloor space R0 may be heated or cooled by removing the intake duct 5 and the air supply duct 6 connected to the underfloor heat exchanger HT. Thereby, the effect close to floor heating or floor cooling can be acquired. Further, in the heating in winter, condensation or the like in the underfloor space R0 is prevented, an effect of preventing mold generation is obtained, and the use amount of the humidity control agent can be reduced.
図１に示す、建物１Ａの床下空間Ｒ０の床版中を通過する不凍液管３のうち、建物１Ａのより外側の不凍液管３をヒートポンプユニットＨＰから採熱杭２へと向かう往路、内側の不凍液管３を採熱杭２からの復路としてもよい。 Out of the antifreeze pipe 3 passing through the floor slab of the underfloor space R0 of the building 1A shown in FIG. 1, the antifreeze pipe 3 on the outer side of the building 1A goes from the heat pump unit HP to the heat collecting pile 2, and the antifreeze inside. The pipe 3 may be a return path from the heat collecting pile 2.
これにより、床下空間Ｒ０と不凍液管（復路）３との間で起こる熱交換、つまり本来であればヒートロスとなる熱交換をも床下空間Ｒ０の冷却や加熱に用いることが出来る。この場合、不凍液管３の往路と復路との間に断熱材を設けることが好ましい。 As a result, heat exchange that occurs between the underfloor space R0 and the antifreeze pipe (return path) 3, that is, heat exchange that would otherwise be heat loss, can be used for cooling and heating the underfloor space R0. In this case, it is preferable to provide a heat insulating material between the forward path and the return path of the antifreeze liquid pipe 3.
また、採熱杭２を地下水汲み上げ用の採水管として、汲み上げた地下水を熱搬送流体として冷媒と熱交換し、熱交換後の地下水を地下水脈に還水してもよい。
[第2実施形態]
図２に、第２実施形態のヒートポンプシステム２０を示す。
Alternatively, the heat collecting pile 2 may be used as a water sampling pipe for pumping up groundwater, the groundwater pumped up as heat transfer fluid may be heat exchanged with the refrigerant, and the groundwater after heat exchange may be returned to the groundwater vein.
[Second Embodiment]
In FIG. 2, the heat pump system 20 of 2nd Embodiment is shown.
ヒートポンプシステム２０は、ヒートポンプユニットＨＰ、採熱杭２Ａ、床下熱交換器ＨＴおよび不凍液管３等を有し、採熱杭２Ａは建物１Ｂの外郭に埋設されている。 The heat pump system 20 includes a heat pump unit HP, a heat collecting pile 2A, an underfloor heat exchanger HT, an antifreeze liquid pipe 3, and the like, and the heat collecting pile 2A is embedded in the outer wall of the building 1B.
ヒートポンプシステム２０によれば、既に建築済みのような場合に、採熱杭２Ａを建物１Ｂの外郭に埋設することで、建物１Ｂにヒートポンプシステム２０を設けることができる。 According to the heat pump system 20, when the building has already been constructed, the heat pump system 20 can be provided in the building 1B by burying the heat collecting pile 2A in the outer shell of the building 1B.
また、第１実施形態の効果（採熱杭２と構造杭が兼用されていることによる効果を除く）と同様の効果が得られる。 Moreover, the effect similar to the effect of 1st Embodiment (except the effect by the heat-collecting pile 2 and the structural pile being combined) is acquired.
第２実施形態は、本発明から逸脱しない限り例えば以下のように変更することができる。 For example, the second embodiment can be modified as follows without departing from the present invention.
建物１Ｂが所在する地域が寒冷地の場合に、採熱杭２Ａや不凍液管３を水道管周りに設置することで、その凍結防止を図ることが出来る。
[第３実施形態]
図３に、第３実施形態のヒートポンプシステム３０を示す。
When the area where the building 1B is located is a cold region, it is possible to prevent freezing by installing the heat collecting pile 2A and the antifreeze liquid pipe 3 around the water pipe.
[Third embodiment]
In FIG. 3, the heat pump system 30 of 3rd Embodiment is shown.
ヒートポンプシステム３０は、ヒートポンプユニットＨＰ、採熱杭２Ａ、床下熱交換器ＨＴおよび不凍液管３等を有し、床下空間Ｒ０の壁面は断熱材７で覆われている。また、採熱杭２Ａは建物１Ｂの外郭に埋設され、この採熱杭２Ａと不凍液管３が埋設されている位置の地表面Ｓの部分が断熱材７で覆われている。 The heat pump system 30 includes a heat pump unit HP, a heat collecting pile 2A, an underfloor heat exchanger HT, an antifreeze liquid pipe 3, and the like, and a wall surface of the underfloor space R0 is covered with a heat insulating material 7. Further, the heat collecting pile 2A is buried in the outer wall of the building 1B, and the portion of the ground surface S where the heat collecting pile 2A and the antifreeze pipe 3 are buried is covered with a heat insulating material 7.
ヒートポンプシステム３０によれば、以下の効果が得られる。 According to the heat pump system 30, the following effects can be obtained.
上記した地表面Ｓの部分が断熱材７で覆われていることにより、外気と地中との断熱性が高まり、採熱杭２Ａや不凍液管３は外気温の影響を受けにくくなる。このため、エネルギーロスが少なく、地熱利用効率が高まる。 Since the above-described portion of the ground surface S is covered with the heat insulating material 7, the heat insulating property between the outside air and the ground is increased, and the heat collecting pile 2A and the antifreeze liquid pipe 3 are not easily affected by the outside air temperature. For this reason, there is little energy loss and geothermal utilization efficiency increases.
ヒートポンプユニットＨＰと床下熱交換器ＨＴが設置された床下空間Ｒ０の壁面が断熱材７で覆われていることにより、床下空間Ｒ０における上記エネルギーロスが少なくなる。また、不凍液との熱交換により温度変化した床下空間Ｒ０状態（温度等）が維持されやすくなる。 When the wall surface of the underfloor space R0 where the heat pump unit HP and the underfloor heat exchanger HT are installed is covered with the heat insulating material 7, the energy loss in the underfloor space R0 is reduced. In addition, the underfloor space R0 state (temperature, etc.) whose temperature has changed due to heat exchange with the antifreeze liquid is easily maintained.
以上、本発明に係るヒートポンプシステム１０，２０，３０について実施の形態に基づいて説明してきたが、第１〜３実施形態に限定されず、本発明に逸脱しない限り変更することができる。 As mentioned above, although heat pump system 10,20,30 which concerns on this invention has been demonstrated based on embodiment, it is not limited to 1st-3rd embodiment, It can change unless it deviates from this invention.
１０，２０，３０・・・ヒートポンプシステム
１Ａ，１Ｂ・・・建物
２，２Ａ・・・採熱杭
３・・・不凍液管（循環流路）
４・・・冷媒管
５・・・吸気ダクト
６・・・給気ダクト
７・・・断熱材
８Ａ・・・切替スイッチ
８Ｄ・・・第２熱交換器（熱交換器）
８Ｂ・・・コンプレッサ
８Ｃ・・・膨張弁
８Ｅ・・・第１熱交換器
９・・・ファン
ＨＴ・・・床下熱交換器
ＨＰ・・・ヒートポンプユニット
Ｒ０・・・床下空間
Ｒ１・・・室内
Ｓ・・・地表面
Ｐ１・・・ポンプ
10, 20, 30 ... heat pump system 1A, 1B ... building 2, 2A ... heat collecting pile 3 ... antifreeze liquid pipe (circulation flow path)
4 ... refrigerant pipe 5 ... intake duct 6 ... air supply duct 7 ... heat insulating material 8A ... changeover switch 8D ... second heat exchanger (heat exchanger)
8B ... Compressor 8C ... Expansion valve 8E ... First heat exchanger 9 ... Fan HT ... Underfloor heat exchanger HP ... Heat pump unit R0 ... Underfloor space R1 ... Indoor S ... Ground surface P1 ... Pump
Claims (4)
前記ポンプが内蔵された前記ヒートポンプユニットは前記建物の床下空間に設置されているとともに、
前記採熱杭が前記建物の構造杭としての機能を兼ね備えており、
前記採熱杭内には、前記循環流路の往路及び復路が配設されており、
前記循環流路の往路及び復路は共に、前記床下空間の床版中を通って前記ヒートポンプユニットと接続されており、
前記ヒートポンプユニットに接続された床下熱交換器も、前記床下空間に設置されており、
前記床下熱交換器は、前記床下空間内の空気を加熱又は冷却する床下空調が可能であることを特徴とする地熱利用型のヒートポンプシステム。 Heat transfer provided so as to pass through the heat collecting pile buried in the ground, a heat pump unit having a heat pump heat exchanger for air conditioning the building, and the heat exchanger and the heat collecting pile A fluid circulation channel, a heat carrier fluid filled in the circulation channel, and a pump for circulating the heat carrier fluid, and exchanging heat between the ground and the indoor air of the building by the circulation. In geothermal heat pump system
The heat pump unit with the built-in pump is installed in a space under the floor of the building,
The heat collection pile has a function as a structural pile of the building,
In the heat collecting pile, an outward path and a return path of the circulation flow path are disposed,
Both the forward path and the return path of the circulation channel are connected to the heat pump unit through the floor slab of the underfloor space ,
The underfloor heat exchanger connected to the heat pump unit is also installed in the underfloor space,
The underfloor heat exchanger is capable of underfloor air conditioning that heats or cools the air in the underfloor space .
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| JP4038729B2 (en) * | 2004-01-26 | 2008-01-30 | 庄司建設株式会社 | Residential air conditioning system using groundwater |
| JP2006052924A (en) * | 2004-08-09 | 2006-02-23 | Tetsuo Murai | Method for artificially preparing constant temperature layer in underground shallow part |
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