JP2009281654A - Water heat source heat pump air conditioning system - Google Patents

Water heat source heat pump air conditioning system Download PDF

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JP2009281654A
JP2009281654A JP2008133597A JP2008133597A JP2009281654A JP 2009281654 A JP2009281654 A JP 2009281654A JP 2008133597 A JP2008133597 A JP 2008133597A JP 2008133597 A JP2008133597 A JP 2008133597A JP 2009281654 A JP2009281654 A JP 2009281654A
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water
heat source
heat
heat pump
water temperature
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JP4550127B2 (en
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Keiichi Kimura
恵一 木村
Matsuo Morita
満津雄 森田
Shozo Shimizu
正三 清水
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Kimura Kohki Co Ltd
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Kimura Kohki Co Ltd
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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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water heat source heat pump air conditioning system capable of saving setting costs and operation costs. <P>SOLUTION: The water heat source heat pump air conditioning system is equipped with a plurality of water heat source heat pump air type air conditioners 1 carrying out air conditioning of an air conditioning reception space of a building, a heat source water circuit 2 circulating heat source water for operating the water heat source heat pump type air conditioners 1, and a plurality of tanks 3 storing domestic wastewater generated in the building to be used as thermal storage water. A heat source heat exchanger 6 carrying out heat exchange of the heat source water by the thermal storage water to carry out water temperature adjustment is provided for every tank 3 in the heat source water circuit 2. A control means 8 is provided for repeating a cycle of carrying out water temperature adjustment of the heat source water within a heat pump operable water temperature range by one of the plurality of tanks 3, carrying out water temperature adjustment of the heat source water within the heat pump operable water temperature range by another tank when the thermal storage water is transferred to a water temperature adjustment difficult state of the heat source water within the heat pump operable water temperature range, draining thermal storage water of the water temperature adjustment difficult state from the tank 3 to be used as an empty tank, and filling and storing domestic wastewater from the building in the empty tank. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は水熱源ヒートポンプ空調システムに関するものである。   The present invention relates to a water source heat pump air conditioning system.

建物の被空調空間を複数の水熱源ヒートポンプ式空調機で空調するシステムでは、水熱源ヒートポンプ式空調機を運転するための熱源水が循環する熱源水回路と、水熱源ヒートポンプ式空調機の運転可能水温範囲に前記熱源水を調節するボイラー及びクーリングタワーなどの熱源装置と、を備えていた。   In a system that air-conditions the air-conditioned space of a building with multiple water heat source heat pump air conditioners, the heat source water circuit that circulates the heat source water for operating the water heat source heat pump air conditioner and the water heat source heat pump air conditioner can be operated And a heat source device such as a boiler and a cooling tower for adjusting the heat source water in a water temperature range.

特開２００１−３０４６１８号公報JP 2001-304618 A

このような熱源装置を運転するには石油やガス、電気などのエネルギーが必要で、運転コストが高く、ＣＯ２増加やヒートアイランドの原因となる。   In order to operate such a heat source device, energy such as oil, gas, and electricity is required, and the operation cost is high, which causes an increase in CO2 and a heat island.

本発明は上記課題を解決するため、建物の被空調空間を空調する複数の水熱源ヒートポンプ式空調機と、この水熱源ヒートポンプ式空調機を運転するための熱源水が循環する熱源水回路と、前記建物で発生する生活排水を溜めて蓄熱水とすると共にこの蓄熱水を排水自在な複数の水槽と、を備え、前記熱源水回路に、前記蓄熱水で前記熱源水を熱交換して水温調節する熱源用熱交換器を、前記水槽毎に設け、複数の前記水槽のうちの一つで前記熱源水をヒーポン運転可能水温範囲に水温調節させると共にこのヒーポン運転可能水温範囲に前記熱源水を水温調節困難な状態へ前記蓄熱水が移行する場合に他の前記水槽で前記熱源水を前記ヒーポン運転可能水温範囲に水温調節させかつ前記水温調節困難な状態の前記蓄熱水を前記水槽から排水させて空き水槽とすると共にこの空き水槽に前記建物で発生する生活排水を注水させて溜めるサイクルを繰返させる制御手段を、設けたことを最も主要な特徴とする。   In order to solve the above-described problems, the present invention provides a plurality of water heat source heat pump air conditioners that air-condition an air-conditioned space of a building, and a heat source water circuit in which heat source water for operating the water heat source heat pump air conditioner circulates, A plurality of water tanks that collect domestic wastewater generated in the building and store it as heat storage water, and drain the heat storage water, and adjust the temperature of the heat source water circuit by exchanging heat with the heat storage water. A heat source heat exchanger is provided for each of the water tanks, and the temperature of the heat source water is adjusted to a water temperature range in which the heat source can be operated in one of the plurality of water tanks, and the temperature of the heat source water is adjusted to the water temperature range in which the heat source can be operated. When the heat storage water is transferred to a state where adjustment is difficult, the heat source water is adjusted in the water temperature range where the heat pump operation is possible in another water tank, and the heat storage water in a state where the water temperature is difficult is drained from the water tank. The most important feature that the control means to repeat the cycle of accumulating by injection domestic wastewater generated in the building to the empty water tank, provided with a free water tank Te.

請求項１の発明によれば
（１）ボイラー及びクーリングタワーなどの熱源装置が不要で、低コストで水熱源ヒートポンプ空調システムを構築できる。熱源装置運転用の石油やガス、電気が不要で、無駄に捨てられていた生活排水の熱エネルギーを再利用して低コストで水熱源ヒートポンプ式空調機を冷暖房運転できるので、大幅な省エネとヒートアイランド防止に効果大である。
（２）水槽ひとつで熱源水を連続して熱交換すると蓄熱水温が変化し続けて、ヒーポン運転可能水温範囲に熱源水を水温調節困難な状態へ蓄熱水が移行し、水熱源ヒートポンプ式空調機の連続運転が困難となるが、本発明では、水槽を切換えてヒーポン運転可能水温範囲に熱源水を水温調節できる蓄熱水を常時使用するので、水熱源ヒートポンプ式空調機を確実に連続運転できて、冷暖房運転が安定し、快適な空調を行える。しかも、連続運転のため余分に水槽を大きくする必要がなく、水槽のコンパクト化を図れる。
（３）水槽の数を増減するだけで、水熱源ヒートポンプ式空調機の連続運転時間を自由に設定でき、各種条件に応じた最適な水熱源ヒートポンプ空調システムを設計構築できる。
（４）水槽ひとつで生活排水を継ぎ足しながら熱源水を熱交換すると蓄熱水と熱源水との温度差が小さくて、熱源水の保有する水量当たりのヒーポン運転用熱エネルギーが少なくなるが、本発明では水槽の蓄熱水を全て入替えて、常に蓄熱水と熱源水の温度差を大きくしているので、熱源水の保有する水量当たりのヒーポン運転用熱エネルギーが多くなり、水熱源ヒートポンプ式空調機運転時のＣＯＰが向上し、水槽のコンパクト化を図れる。 According to the invention of claim 1, (1) a heat source device such as a boiler and a cooling tower is unnecessary, and a water heat source heat pump air conditioning system can be constructed at low cost. Oil, gas, and electricity for operating the heat source equipment are unnecessary, and heat energy from wastewater that has been wasted can be reused at low cost to cool and heat the water source heat pump air conditioner. It is effective for prevention.
(2) If the heat source water is continuously heat exchanged in a single tank, the heat storage water temperature will continue to change, and the heat storage water will shift to a state where it is difficult to adjust the water temperature to the heat pump operable water temperature range, and the water heat source heat pump air conditioner However, in the present invention, the heat storage water that can adjust the temperature of the heat source water is always used in the water temperature range where the heat tank can be switched by switching the water tank, so that the water heat source heat pump air conditioner can be reliably operated continuously. Air-conditioning operation is stable and comfortable air-conditioning can be performed. Moreover, it is not necessary to enlarge the water tank for continuous operation, and the water tank can be made compact.
(3) By simply increasing or decreasing the number of water tanks, the continuous operation time of the water heat source heat pump type air conditioner can be freely set, and an optimum water heat source heat pump air conditioning system can be designed and constructed according to various conditions.
(4) When heat source water is heat-exchanged while adding domestic wastewater in one tank, the temperature difference between the heat storage water and the heat source water is small, and the heat energy for heat pump operation per amount of water held in the heat source water is reduced. Since the temperature difference between the heat storage water and the heat source water is constantly increased by replacing all the heat storage water in the tank, the heat energy for heat pump operation per amount of water held by the heat source water increases, and the water heat source heat pump type air conditioner operates. COP at the time improves, and the water tank can be made compact.

図１は、本発明の水熱源ヒートポンプ空調システムの一実施例を示しており、この水熱源ヒートポンプ空調システムは、冷房運転・暖房運転切換自在として図示省略の建物の被空調空間を空調する複数の水熱源ヒートポンプ式空調機１…と、この水熱源ヒートポンプ式空調機１を運転するための熱源水が循環する熱源水回路２と、前記建物で発生する生活排水を溜めて蓄熱水とすると共にこの蓄熱水を排水自在な複数の水槽３…と、を備えている。熱源水回路２は送水ポンプ４を備え、水熱源ヒートポンプ式空調機１のヒーポン用水熱交換器５が通水自在に接続される。熱源水は、送水ポンプ４により流量調節自在として白抜きの矢印方向に送られて、水熱源ヒートポンプ式空調機１に入り、ヒーポン用水熱交換器５にて後述の循環冷媒と熱交換された後、熱源水回路２に戻り循環する。   FIG. 1 shows an embodiment of a water heat source heat pump air conditioning system according to the present invention. This water heat source heat pump air conditioning system has a plurality of air conditioning spaces in a building (not shown) that can be switched between cooling operation and heating operation. Water heat source heat pump type air conditioner 1..., Heat source water circuit 2 through which heat source water for operating the water heat source heat pump type air conditioner 1 circulates, and the domestic waste water generated in the building is stored as heat storage water. And a plurality of water tanks 3 for draining the heat storage water. The heat source water circuit 2 includes a water supply pump 4, and a water heat exchanger 5 for heat pumps of the water heat source heat pump type air conditioner 1 is connected so as to allow water to pass therethrough. After the heat source water is sent in the direction of the white arrow so that the flow rate can be adjusted by the water pump 4 and enters the water heat source heat pump type air conditioner 1, the heat source water heat exchanger 5 exchanges heat with a circulating refrigerant described later. Return to the heat source water circuit 2 and circulate.

熱源水回路２には、水槽３の蓄熱水で熱源水を熱交換して水温調節する熱源用熱交換器６を、水槽３毎に設ける。８は制御手段で、複数の水槽３のうちの一つで熱源水をヒーポン運転可能水温範囲に水温調節させると共にこのヒーポン運転可能水温範囲に熱源水を水温調節困難な状態へ蓄熱水が移行する場合に他の水槽３で熱源水をヒーポン運転可能水温範囲に水温調節させかつ前記水温調節困難な状態の蓄熱水を水槽３から排水させて空き水槽とすると共にこの空き水槽に建物で発生する生活排水を注水させて溜めるサイクルを繰返させるものである。熱源水のヒーポン運転可能水温範囲（水熱源ヒートポンプ式空調機１の冷暖運転可能水温範囲）は、例えば１０〜４５℃である。なお、本発明において、生活排水とは、建物内の生活機器９で使用された洗面、風呂、調理、湯沸などの排水と、雨水とを含むものとする。   The heat source water circuit 2 is provided with a heat source heat exchanger 6 for each water tank 3 for heat exchange of the heat source water with the heat storage water of the water tank 3 to adjust the water temperature. 8 is a control means for adjusting the temperature of the heat source water within the water temperature range in which the heat source can be operated in one of the plurality of water tanks 3 and transferring the heat storage water to a state in which it is difficult to adjust the temperature of the heat source water in the water temperature range in which the heat pump can be operated. In such a case, the heat source water is adjusted to a water temperature range where heat pump operation is possible in another water tank 3, and the heat storage water in a state where the water temperature is difficult to be adjusted is drained from the water tank 3 to become an empty water tank and life generated in the building in this empty water tank The cycle in which drainage is poured and accumulated is repeated. The water temperature range in which the heat source water can be operated in the heat pump (the water temperature range in which the water heat source heat pump type air conditioner 1 can be cooled and heated) is, for example, 10 to 45 ° C. In the present invention, the domestic wastewater includes wastewater used for the daily life equipment 9 in the building, such as a wash surface, a bath, cooking, and a hot water, and rainwater.

この生活排水が大量に発生するホテルや病院などの各種施設の建物では、例えば生活排水を水槽３に集めて浄化し、送水ポンプでトイレ１０…の給水管に流して、略常温（例えば夏期では２０〜２５℃、冬期では１０℃〜１５℃）のし尿処理水を建物外へ排水している。熱源用熱交換器６は管状で、水槽３内に熱源用熱交換器６を、蓄熱水と熱源水を熱交換自在として内設させているが、これ以外の構造構成としたり、水槽３を浄化用以外の水槽とするも自由である。水槽３の蓄熱水は、常温排水と風呂や湯沸などの高温排水が混合されるため常温を超える温度（例えば２０℃〜２５℃）となる。   In buildings of various facilities such as hotels and hospitals where a large amount of domestic wastewater is generated, the domestic wastewater is collected and purified in the aquarium 3, for example, and sent to the water supply pipe of the toilet 10 with a water pump, and at substantially normal temperature (for example, in summer) The treated human waste water at 20 to 25 ° C. and 10 to 15 ° C. in winter is drained outside the building. The heat source heat exchanger 6 has a tubular shape, and the heat source heat exchanger 6 is provided in the water tank 3 so that the heat storage water and the heat source water can be exchanged with heat. It is free to use water tanks other than those for purification. The heat storage water in the water tank 3 has a temperature exceeding normal temperature (for example, 20 ° C. to 25 ° C.) because normal temperature waste water and high temperature waste water such as a bath or a hot water are mixed.

一部図示省略するが、水熱源ヒートポンプ式空調機１は、ケーシング内にヒートポンプ１３と給気用ファン１４とを備え、このヒートポンプ１３は、循環冷媒の蒸発工程と凝縮工程であって互いに異なる工程を行う給気用空気熱交換器１５及びヒーポン用水熱交換器５と、循環冷媒を圧縮する圧縮機１６と、循環冷媒を膨張させる膨張弁等の減圧機構と、給気用空気熱交換器１５及びヒーポン用水熱交換器５の蒸発工程と凝縮工程を切換えるバルブ等の冷媒流路切換機構と、を少なくとも備え、これらを冷媒が循環するように配管接続して成る。このヒートポンプ１３の空気熱交換器１５にて空調用空気を冷却又は加熱し、冷房運転と暖房運転を切換自在に行い、被空調空間に給気して空調する。   Although not shown in part, the water heat source heat pump type air conditioner 1 includes a heat pump 13 and an air supply fan 14 in a casing. The heat pump 13 is a process for evaporating and condensing a circulating refrigerant, and is different from each other. Air heat exchanger 15 for air supply and water heat exchanger 5 for heat pump, compressor 16 for compressing the circulating refrigerant, decompression mechanism such as an expansion valve for expanding the circulating refrigerant, and air heat exchanger 15 for the air supply And at least a refrigerant flow path switching mechanism such as a valve for switching between the evaporation process and the condensation process of the water heat exchanger 5 for heat pumps, and these are connected by piping so that the refrigerant circulates. The air heat exchanger 15 of the heat pump 13 cools or heats the air-conditioning air so that the cooling operation and the heating operation can be switched freely, and the air-conditioned space is supplied and air-conditioned.

制御手段８は、水槽３の蓄熱水温度を検出する蓄熱水温度検出器１８と、ヒーポン用水熱交換器５の熱源水入口側の熱源水温度を検出する熱源水入口温度検出器２５と、複数の熱源用熱交換器６のひとつへ選択的に熱源水を流す熱源水路切換機構７と、複数の水槽３のひとつから選択的に蓄熱水を排水させる蓄熱水排水機構１９と、複数の水槽３のひとつへ選択的に生活排水を注水する生活排水注水路切換機構２０と、複数の水槽３のひとつから選択的にトイレ１０への給水管へトイレ処理用水を供給するトイレ処理水路切換機構２４と、蓄熱水温度検出器１８又は／及び熱源水入口温度検出器２５で検出された蓄熱水温度又は／及び熱源水温度に応じて空き水槽とすべき水槽３（ヒーポン運転可能水温範囲に熱源水を水温調節困難な状態へ蓄熱水が移行する水槽３）及び他の水槽３（ヒーポン運転可能水温範囲に熱源水を水温調節できる蓄熱水を溜めた水槽３）を選定し常時ヒーポン運転可能水温範囲内に熱源水を水温調節するように熱源水路切換機構７と蓄熱水排水機構１９と生活排水注水路切換機構２０とトイレ処理水路切換機構２４へ制御信号を出力する制御器２１と、を備え、水熱源ヒートポンプ式空調機１の省エネ連続運転を自動的に行えるようにしている。   The control means 8 includes a heat storage water temperature detector 18 for detecting the heat storage water temperature of the water tank 3, a heat source water inlet temperature detector 25 for detecting the heat source water temperature on the heat source water inlet side of the heat pump water heat exchanger 5, and a plurality of heat source water inlet temperature detectors 25. A heat source water channel switching mechanism 7 for selectively flowing heat source water to one of the heat exchangers 6 for the heat source, a heat storage water drain mechanism 19 for selectively discharging the heat storage water from one of the plurality of water tanks 3, and the plurality of water tanks 3. A domestic wastewater irrigation channel switching mechanism 20 that selectively injects domestic wastewater into one of the water tanks, and a toilet treatment waterway switching mechanism 24 that selectively supplies toilet treatment water from one of the plurality of water tanks 3 to a water supply pipe to the toilet 10; The water tank 3 to be an empty water tank according to the heat storage water temperature or / and the heat source water temperature detected by the heat storage water temperature detector 18 and / or the heat source water inlet temperature detector 25 (heat source water in the water temperature range where heat pump operation is possible) Difficult to adjust water temperature Select water tank 3) to which hot water is transferred and other water tank 3 (water tank 3 in which heat storage water can be adjusted in the heat-pump-operable water temperature range) and adjust the temperature of the heat-source water in the water-heat range where heat-pump operation is possible at all times. A heat source water channel switching mechanism 7, a heat storage water drainage mechanism 19, a domestic drainage water channel switching mechanism 20, and a controller 21 that outputs a control signal to the toilet treatment water channel switching mechanism 24, and the water heat source heat pump air conditioner 1. The energy saving continuous operation can be automatically performed.

なお、蓄熱水温度検出器１８と熱源水入口温度検出器２５の一方を省略するも自由で、蓄熱水温度検出器１８のみの場合は、ヒーポン運転可能水温範囲に熱源水を水温調節できる水温範囲を設定し、これと蓄熱水温度検出器１８で検出された蓄熱水温度とを比較して上記制御をし、熱源水入口温度検出器２５のみの場合は、ヒーポン運転可能水温範囲を設定し、これと熱源水入口温度検出器２５で検出された熱源水温度とを比較して上記制御をする。   Note that one of the heat storage water temperature detector 18 and the heat source water inlet temperature detector 25 may be omitted, and in the case of only the heat storage water temperature detector 18, the water temperature range in which the heat source water can be adjusted to the heat pump operable water temperature range. And the above control is performed by comparing this with the heat storage water temperature detected by the heat storage water temperature detector 18, and in the case of only the heat source water inlet temperature detector 25, the heat pump operable water temperature range is set, The above control is performed by comparing this with the heat source water temperature detected by the heat source water inlet temperature detector 25.

図例では、生活排水注水路切換機構２０と蓄熱水排水機構１９は落差を利用して生活排水を注水、蓄熱水を排水するようにしているが、送水ポンプを用いて生活排水を注水、蓄熱水を排水するも自由である。なお、生活排水の注水、蓄熱水の排水のシーケンスは図示省略のタイマーや水量検出器などを用いて制御すればよく、その手段や構成の変更は自由である。また、熱源水路切換機構７は、三方弁などの制御弁で流路を切換えて熱源水が所定の熱源用熱交換器６に流れるように構成し、蓄熱水排水機構１９は、水槽３に設けた排水管１１と、排水管１１に設けた開閉弁や流量調整弁などの制御弁１２と、にて蓄熱水を水槽３から排水自在として構成し、生活排水注水路切換機構２０は、水槽３への給水管２２と三方弁などの制御弁２３で流路を切換えて生活排水が所定の水槽３に供給されるように構成し、トイレ処理水路切換機構２４は、汲上管と三方弁などの制御弁で流路を切換えて所定の水槽３から蓄熱水を汲み上げるように構成しているが、トイレ処理水路切換機構２４、熱源水路切換機構７、蓄熱水排水機構１９及び生活排水注水路切換機構２０の構成の変更は自由である。また、水槽３の数を２以上とするも自由である。   In the illustrated example, the domestic wastewater injection channel switching mechanism 20 and the heat storage water drainage mechanism 19 use the head to inject the domestic wastewater and the heat storage water, but use the water pump to inject the domestic wastewater and store the heat. It is free to drain water. The sequence of the drainage of domestic wastewater and the drainage of heat storage water may be controlled using a timer or a water amount detector (not shown), and the means and configuration can be changed freely. The heat source water channel switching mechanism 7 is configured to switch the flow path with a control valve such as a three-way valve so that the heat source water flows to a predetermined heat source heat exchanger 6, and the heat storage water drain mechanism 19 is provided in the water tank 3. The drainage pipe 11 and the control valve 12 such as an on-off valve or a flow rate adjustment valve provided in the drainage pipe 11 are configured to allow the heat storage water to be drained from the water tank 3. A water supply pipe 22 and a control valve 23 such as a three-way valve are used to switch the flow path so that domestic wastewater is supplied to a predetermined water tank 3, and the toilet treatment water channel switching mechanism 24 includes a pumping pipe and a three-way valve. The flow path is switched by a control valve so that the heat storage water is pumped from the predetermined water tank 3, but the toilet treatment water channel switching mechanism 24, the heat source water channel switching mechanism 7, the heat storage water draining mechanism 19 and the domestic waste water irrigation water channel switching mechanism. The change of the configuration of 20 is free. Further, the number of water tanks 3 can be set to 2 or more.

なお、前記実施例において、水熱源ヒートポンプ式空調機１の台数の増減は自由である。熱源水回路２はダイレクトレターン方式、リバースレターン方式やこれらの併用方式など各種の方式に変更自由である。さらに、トイレ処理水路切換機構２４を省略し、水槽３の蓄熱水をトイレ処理に利用しないようにするも自由である。また、必要に応じてクーリングタワーやボイラーなどの熱源装置を熱源水回路２に併設するも自由である。   In addition, in the said Example, increase / decrease in the number of the water heat source heat pump type air conditioners 1 is free. The heat source water circuit 2 can be freely changed to various methods such as a direct return method, a reverse return method, and a combination thereof. Furthermore, the toilet treatment water channel switching mechanism 24 may be omitted so that the heat storage water in the water tank 3 is not used for toilet treatment. Further, a heat source device such as a cooling tower or a boiler can be freely provided in the heat source water circuit 2 as necessary.

本発明の水熱源ヒートポンプ空調システムの実施例である。It is an Example of the water-source heat pump air-conditioning system of this invention.

符号の説明Explanation of symbols

１ 水熱源ヒートポンプ式空調機
２ 熱源水回路
３ 水槽
６ 熱源用熱交換器
８ 制御手段 DESCRIPTION OF SYMBOLS 1 Water heat source heat pump type air conditioner 2 Heat source water circuit 3 Water tank 6 Heat exchanger for heat source 8 Control means

Claims (1)

建物の被空調空間を空調する複数の水熱源ヒートポンプ式空調機（１）と、この水熱源ヒートポンプ式空調機（１）を運転するための熱源水が循環する熱源水回路（２）と、前記建物で発生する生活排水を溜めて蓄熱水とすると共にこの蓄熱水を排水自在な複数の水槽（３）と、を備え、前記熱源水回路（２）に、前記蓄熱水で前記熱源水を熱交換して水温調節する熱源用熱交換器（６）を、前記水槽（３）毎に設け、複数の前記水槽（３）のうちの一つで前記熱源水をヒーポン運転可能水温範囲に水温調節させると共にこのヒーポン運転可能水温範囲に前記熱源水を水温調節困難な状態へ前記蓄熱水が移行する場合に他の前記水槽（３）で前記熱源水を前記ヒーポン運転可能水温範囲に水温調節させかつ前記水温調節困難な状態の前記蓄熱水を前記水槽（３）から排水させて空き水槽とすると共にこの空き水槽に前記建物で発生する生活排水を注水させて溜めるサイクルを繰返させる制御手段（８）を、設けたことを特徴とする水熱源ヒートポンプ空調システム。   A plurality of water heat source heat pump air conditioners (1) for air-conditioning the air-conditioned space of the building, a heat source water circuit (2) in which heat source water for operating the water heat source heat pump air conditioner (1) circulates, A plurality of water tanks (3) that collect domestic wastewater generated in the building and use it as heat storage water, and drain the heat storage water, and heat the heat source water with the heat storage water in the heat source water circuit (2). A heat source heat exchanger (6) for adjusting the water temperature by exchanging is provided for each of the water tanks (3), and the water temperature of the heat source water is adjusted within the water temperature range where heat pump operation is possible in one of the water tanks (3). And when the heat storage water is transferred to a state where it is difficult to adjust the water temperature in the heat pump operable water temperature range, the heat source water is adjusted to the heat pump operable water temperature range in the other water tank (3), and The heat storage in a state in which the water temperature is difficult to control Water is provided with a control means (8) for draining water from the water tank (3) to make an empty water tank and repeating a cycle of pouring and storing domestic waste water generated in the building in the empty water tank. Heat source heat pump air conditioning system.
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