JP4518294B2

JP4518294B2 - Air conditioning, heat storage, and hot water supply system using body heat storage

Info

Publication number: JP4518294B2
Application number: JP2000123743A
Authority: JP
Inventors: 雄一郎伊藤
Original assignee: Tokyo Electric Power Co Inc; Panasonic Ecology Systems Co Ltd; Daiwa House Industry Co Ltd
Current assignee: Tokyo Electric Power Co Inc; Panasonic Ecology Systems Co Ltd; Daiwa House Industry Co Ltd
Priority date: 2000-04-25
Filing date: 2000-04-25
Publication date: 2010-08-04
Anticipated expiration: 2020-04-25
Also published as: JP2001304627A

Description

【０００１】
【発明の属する技術分野】
本発明は、躯体蓄熱を利用した空気調和・蓄熱・給湯システム、詳しくは、夜間の電力により床下のコンクリートに冷暖房エネルギーを蓄え、また、熱源機の運転時に発生する熱を利用して給湯用の温水を生成する躯体蓄熱を利用した空気調和・蓄熱・給湯システムに関する。
【０００２】
【従来の技術】
床下のスペースを利用して行われている蓄熱方式には、コンクリートなどの蓄熱材料を床下に敷き詰め、蓄熱材料内部に配管、ダクト、空気搬送用空間を備え、冷温水や冷温風などの熱交換冷媒を送り込み蓄熱材料を冷却あるいは加熱により蓄熱することが知られている。また、冷房時に発生する熱源機の排熱を回収して給湯用温水を生成することが知られている。
【０００３】
従来、この種の空気調和・蓄熱・給湯システムは、特開平１０−２５３０９７公報に記載されたものが知られている。
【０００４】
以下に、そのシステムについて図５を参照しながら説明する。
【０００５】
図に示すように断熱材１０１で断熱された建物の床下のコンクリート１０２に設置された熱交換機１０３と、この熱交換機１０３に接続されたヒートポンプユニット１０４とを備え、ヒートポンプユニット１０４で生成された冷水または温水を送給し、建物内の床下のコンクリート１０３を冷却または加熱する。これにより床下のコンクリート１０２から輻射で室内を冷暖房する。また、ヒートポンプユニット１０４は建物内に設置した送風用熱交換機１０５が接続され空気熱交換を行って室内に温風または冷風を供給する。また、給湯用熱交換機としての給湯用コイルがヒートポンプユニット１０４に接続され、ヒートポンプユニット１０４から送られる高温冷媒により温水を作ると共にこの温水を貯湯槽１０６に蓄える構成となっていた。
【０００６】
【発明が解決しようとする課題】
給湯貯湯槽は夜間電力を利用して電気ヒータによって温水を温めるものが一般的であり、給湯によって使用された水量を補充する給水を槽下部より取り入れ給湯は槽上部から供給し、加温は槽下部の冷水を槽より取り出して電気ヒータにより加熱し槽上部より槽内に戻すように制御している。また、給湯貯湯槽内の給湯用温水は１００℃程度の高温に沸かし、給湯時に常温の給水と混合して給湯することで給湯貯湯量を確保している。しかしながら、ヒートポンプの熱源機から発生する熱により生成される温水は５０℃から６０℃程度が限界であるため、給湯用温水生成過程で給湯貯湯槽内の１００℃の温水と、給湯によって使用された水量を補充した給水とを撹拌し、給湯貯湯槽内の温水の温度を低下させてしまうという課題があり、給湯貯湯槽内の水を効率良く給湯運転できる給湯システムが要求されている。また、前述の様に、給湯貯湯槽においても電気ヒータによって温水を温めているため、熱源機による給湯運転が充分に行われないうちに給湯運転が終了してしまうという課題があり、熱源機による給湯運転が充分に発揮できる給湯システムが要求されている。
【０００７】
本発明は、このような従来の課題を解決するものであり、熱源機により給湯運転を行う際、給湯貯湯槽内の１００℃の温水と、給湯によって使用された水量を補充した給水とを撹拌することなく効率良く給湯運転を行うことができ、また、熱源機による給湯運転が充分に発揮できる躯体蓄熱を利用した空気調和・蓄熱・給湯システムを供給することを目的としている。
【００１４】
【課題を解決するための手段】
本発明の空気調和・蓄熱・給湯システムは上記目的を達成するために、建物の床下に断熱材で断熱されたコンクリート内部に冷水または温水が通水可能な配管およびバルブを備えた蓄熱手段と、冷風または温風を供給するファンコイルユニットと、冷水または温水を生成するヒートポンプである熱源機と、前記熱源機により生成した冷水または温水を前記熱源機に配管接続された前記蓄熱手段と前記ファンコイルユニットとに搬送する空調用ポンプと、前記熱源機より発生する熱を取り入れる様に配管接続された給湯貯湯槽および給湯用ポンプを備え、前記給湯用ポンプが前記給湯貯湯槽の水を前記熱源機を通って循環するように搬送させ、前記バルブを開けることにより前記熱源機により生成された冷水または温水が前記配管に通水され、前記給湯貯湯槽の給湯水が前記給湯貯湯槽の上部から給湯により使用されると前記給湯貯湯槽の下部から前記給湯貯湯槽内へ給水が補給される躯体蓄熱を利用した空気調和・蓄熱・給湯システムにおいて、前記給湯貯湯槽に備えられた加熱用電気ヒータの通電を遮断するリレーと、現在時刻が認識可能なタイマー手段と、前記タイマー手段からの時刻情報から前記リレーの開閉を制御するリレー制御手段とを備え、深夜電力時間帯が開始される時から所定時間前記加熱用電気ヒータへの通電を遮断し前記熱源機による前記給湯貯湯槽の水を加熱する給湯運転を行いその後の前記加熱用電気ヒータによる前記給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する時までに前記給湯貯湯槽内の水を沸き上げるようにしたことを特徴とする躯体蓄熱を利用した空気調和・蓄熱・給湯システムとしたものであり、深夜電力時間帯が開始される時から所定時間電気ヒータによる給湯貯湯槽の水を加熱する給湯運転を強制的に遮断し熱源機による給湯貯湯槽の水を加熱する給湯運転を優先して行い、その後の加熱用電気ヒータによる給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する時までに前記給湯貯湯槽内の水を沸き上げるようにし、前記給湯用ポンプが前記給湯貯湯槽下部の水を前記熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させた構成としたものである。
【００１５】
本発明によれば、熱源機による給湯貯湯槽の水を加熱する給湯運転が充分に発揮できる躯体蓄熱を利用した空気調和・蓄熱・給湯システムを提供できる。また、建物の床下に断熱材で断熱されたコンクリート内部に冷水または温水が通水可能な配管およびバルブを備えた蓄熱手段と、冷風または温風を供給するファンコイルユニットと、冷水または温水を生成するヒートポンプである熱源機と、前記熱源機により生成した冷水または温水を前記熱源機に配管接続された前記蓄熱手段と前記ファンコイルユニットとに搬送する空調用ポンプと、前記熱源機より発生する熱を取り入れる様に配管接続された給湯貯湯槽および給湯用ポンプと、前記給湯貯湯槽に備えられた加熱用電気ヒータを備え、前記給湯用ポンプが前記給湯貯湯槽の水を前記熱源機を通って循環するように搬送させ、前記バルブを開けることにより前記熱源機により生成された冷水または温水が前記配管に通水され、前記給湯貯湯槽の給湯水が前記給湯貯湯槽の上部から給湯により使用されると前記給湯貯湯槽の下部から前記給湯貯湯槽内へ給水が補給される躯体蓄熱を利用した空気調和・蓄熱・給湯システムにおいて、前記給湯用ポンプが前記給湯貯湯槽下部の水を前記熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させた構成としたことを特徴とする躯体蓄熱を利用した空気調和・蓄熱・給湯システムとしたものである。本発明によれば、熱源機のみにより給湯貯湯槽の水を加熱する給湯運転を行う際、給湯貯湯槽内の温水と、給湯によって使用された水量を補充した給水とを撹拌することなく効率良く給湯貯湯槽の水を加熱する給湯運転を行うことが可能な躯体蓄熱を利用した空気調和・蓄熱・給湯システムを提供できる。
【００１９】
【発明の実施の形態】
本発明の請求項１に記載の発明は、建物の床下に断熱材で断熱されたコンクリート内部に冷水または温水が通水可能な配管およびバルブを備えた蓄熱手段と、冷風または温風を供給するファンコイルユニットと、冷水または温水を生成するヒートポンプである熱源機と、前記熱源機により生成した冷水または温水を前記熱源機に配管接続された前記蓄熱手段と前記ファンコイルユニットとに搬送する空調用ポンプと、前記熱源機より発生する熱を取り入れる様に配管接続された給湯貯湯槽および給湯用ポンプを備え、前記給湯用ポンプが前記給湯貯湯槽の水を前記熱源機を通って循環するように搬送させ、前記バルブを開けることにより前記熱源機により生成された冷水または温水が前記配管に通水され、前記給湯貯湯槽の給湯水が前記給湯貯湯槽の上部から給湯により使用されると前記給湯貯湯槽の下部から前記給湯貯湯槽内へ給水が補給される躯体蓄熱を利用した空気調和・蓄熱・給湯システムにおいて、前記給湯貯湯槽に備えられた加熱用電気ヒータの通電を遮断するリレーと、現在時刻が認識可能なタイマー手段と、前記タイマー手段からの時刻情報から前記リレーの開閉を制御するリレー制御手段とを備え、深夜電力時間帯が開始される時から所定時間前記加熱用電気ヒータへの通電を遮断し前記熱源機による前記給湯貯湯槽の水を加熱する給湯運転を行いその後の前記加熱用電気ヒータによる前記給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する時までに前記給湯貯湯槽内の水を沸き上げるようにし、前記給湯用ポンプが前記給湯貯湯槽下部の水を前記熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させたことにより、深夜電力時間帯が開始される時から所定時間電気ヒータによる給湯貯湯槽の水を加熱する給湯運転を強制的に遮断し熱源機による給湯貯湯槽の水を加熱する給湯運転を優先して行い、その後の加熱用電気ヒータによる給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する時までに前記給湯貯湯槽内の水を沸き上げるようにしたことで、熱源機による給湯貯湯槽の水を加熱する給湯運転が充分に発揮できるという作用を有する。また、請求項２に記載の発明は、建物の床下に断熱材で断熱されたコンクリート内部に冷水または温水が通水可能な配管およびバルブを備えた蓄熱手段と、冷風または温風を供給するファンコイルユニットと、冷水または温水を生成するヒートポンプである熱源機と、前記熱源機により生成した冷水または温水を前記熱源機に配管接続された前記蓄熱手段と前記ファンコイルユニットとに搬送する空調用ポンプと、前記熱源機より発生する熱を取り入れる様に配管接続された給湯貯湯槽および給湯用ポンプと、前記給湯貯湯槽に備えられた加熱用電気ヒータを備え、前記給湯用ポンプが前記給湯貯湯槽の水を前記熱源機を通って循環するように搬送させ、前記バルブを開けることにより前記熱源機により生成された冷水または温水が前記配管に通水され、前記給湯貯湯槽の給湯水が前記給湯貯湯槽の上部から給湯により使用されると前記給湯貯湯槽の下部から前記給湯貯湯槽内へ給水が補給される躯体蓄熱を利用した空気調和・蓄熱・給湯システムにおいて、前記給湯用ポンプが前記給湯貯湯槽下部の水を前記熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させた構成としたものであり、熱源機のみにより給湯貯湯槽の水を加熱する給湯運転を行う際、給湯貯湯槽内の温水を撹拌することなく給湯貯湯槽の水を加熱する給湯運転を行うという作用を有する。
【００２０】
以下、本発明の実施例について添付図面を参照しながら説明する。
【００２１】
【実施例】
（実施例１）
図１に示すように、蓄熱手段１は、建物の床下に周囲を断熱材で断熱されたコンクリート内部に、冷水または温水が通水可能な配管２およびバルブ３を備えており、バルブ３を開けることにより、熱源機４により生成された冷水または温水が配管２に通水され、蓄熱手段１のコンクリートを冷却または加熱し熱を蓄える。蓄熱手段１の上面は断熱材で断熱されておらず、コンクリートに蓄えられた熱が輻射熱となり建物内部へ放出される。ファンコイルユニット５は建物内に設置されており、蓄熱手段１と共に熱源機４に配管接続されている。ファンコイルユニット５が空調運転を行う場合、熱源機４により生成された冷水または温水がファンコイルユニット５内部の熱交換コイルに通水され、同内部のファンの運転により建物内部の空間に冷風または温風を供給する。蓄熱手段１およびファンコイルユニット５への通水は、空調用ポンプ６によって搬送される。また、給湯貯湯槽７も熱源機４と配管接続されており、給湯用ポンプ８が給湯貯湯槽７下部の水を熱源機４を通って給湯貯湯槽７下部に戻し循環するように搬送させ、熱源機４により発生する熱で循環する水を加熱させ、給湯貯湯槽７下部の冷水の温度を上昇させる。熱源機４により給湯貯湯槽の水を加熱する給湯運転については、給湯貯湯槽７の槽中央部には、槽内の水温度を検知する槽内温度検知手段９が備えられており、検知した槽内の水温度信号を給湯運転開始判定手段１０へ送信している。給湯運転開始判定手段１０は、給湯貯湯槽７の給湯水が給湯貯湯槽７の上部から給湯により使用（図４に図示）され、槽内へ給湯貯湯槽７の下部から給水が補給（図４に図示）されると、給水された冷水の水位が上昇していき、槽内温度検知手段９が設置されている位置まで達すると、その温度変化を検知して熱源機４による給湯貯湯槽の水を加熱する給湯運転の開始を判断している。また、給湯温度検知手段１１は、熱源機４と給湯貯湯槽７とを接続する配管内の温度を検知するように備えられており、検知した配管内の水温度信号を給湯運転終了判定手段１２へ送信している。給湯運転終了判定手段１２は、熱源機４により発生した熱で加熱された給湯貯湯槽７下部の給湯水の温度が、熱源機４から発生する熱で加熱できる限界温度である５０℃に達すると、熱源機４による給湯貯湯槽の水を加熱する給湯運転の終了を判断している。制御手段１３は、給湯運転開始判定手段１０および給湯運転終了判定手段１２からの判断結果から、給湯用ポンプ８の運転を制御する構成としている。
【００２２】
給湯用ポンプが給湯貯湯槽下部の水を熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させた上記構成により、熱源機のみにより給湯貯湯槽の水を加熱する給湯運転を行う際、給湯貯湯槽内の温水を撹拌することなく給湯貯湯槽の水を加熱する給湯運転を行うことができる。
【００２３】
したがって、熱源機のみにより給湯貯湯槽の水を加熱する給湯運転を行う際、給湯貯湯槽内の１００℃の温水と、給湯によって使用された水量を補充した給水とを撹拌することなく効率良く給湯貯湯槽の水を加熱する給湯運転を行うことが可能な躯体蓄熱を利用した空気調和・蓄熱・給湯システムが実現できる。
【００２４】
なお、実施例では、槽内温度検知手段９を給湯貯湯槽７の槽中央部へ備える構成としたが、熱源機４で発生する熱量や、給湯用ポンプ８の搬送能力に応じて設置する位置が変えられる仕組みとしても良い。
【００２５】
また、槽内温度検知手段９を給湯貯湯槽７の複数部分に備え、給水の水位をきめ細かく検知し、給湯用ポンプ８の運転を制御するとなお良い。
【００２６】
（参考例１）
図２に示すように、制御手段１３には、現在時刻が認識可能なタイマー手段１４と、ファンコイルユニット５の運転状態を監視する空調運転監視手段１５と、蓄熱手段１による蓄熱運転状態を監視する蓄熱運転監視手段１６とが備えられている。空調運転監視手段１５は、タイマー手段１４が午後８時から午後１１時を示している間、ファンコイルユニット５の運転の有無を監視する。前述の時間内は、居住者が建物内に滞在し、１日の生活の疲れを癒す憩いの時間であり、冷暖房が必要なシーズンであればファンコイルユニット５を運転する。また、ファンコイルユニット５を運転しなかった場合は、その後の時間も運転しないであろうと想定されるため、熱源機４が冷房運転の運転サイクルであった場合、暖房運転の運転サイクルへ切り換えて給湯運転をする条件となる。蓄熱運転監視手段１６は、タイマー手段１４が午前６時を示した時、蓄熱手段１の運転の有無を監視する。蓄熱運転は、深夜電力時間帯の終了時間である午前７時まで行われるため、午前６時の時点で蓄熱運転が行われていなければ、その日の蓄熱運転が行われていないことが認識できる。また、午後１１時の時点で蓄熱運転が行われなかった次の日は蓄熱運転が行われない可能性が高いため、熱源機４が冷房運転の運転サイクルであった場合、暖房運転の運転サイクルへ切り換えて給湯運転を行う条件となる。熱源機４の冷暖房運転の運転サイクルを暖房サイクルに切り換えての給湯運転は、電気料金が安価な深夜電力時間帯となる午後１１時から行うことから、サイクル切換手段１７は、タイマー手段１４が午後１１時を示した時、空調運転監視手段１５および蓄熱運転監視手段１６からの監視結果から、制御手段１３が給湯用ポンプ８の運転を制御する際、熱源機４の冷暖房運転の運転サイクルを暖房サイクルに切り換える構成としている。
【００２７】
上記構成により、空調運転、蓄熱運転の運転状態から給湯運転を制御する熱源機への過剰な負担をかけずに給湯運転を行うことができる。
【００２８】
したがって、熱源機への過剰な負担をかけずに給湯運転を行うことが可能な躯体蓄熱を利用した空気調和・蓄熱・給湯システムが実現できる。
【００２９】
なお、参考例では、空調運転監視手段１５は、タイマー手段１４が午後８時から午後１１時までを監視時間としているが、午後１１時以降のファンコイルユニットの運転が予測できる時間帯であれば、どのような時間帯でも良い。
【００３０】
また、蓄熱運転監視手段１６は、午前６時の時点での蓄熱運転状態を監視しているが、前日からの蓄熱運転が判断できる時間であれば、どの時間でも良い。また、前日からの蓄熱運転が判断できる方法であれば、どのような方法でも良く、さらには、制御手段１３に居住者による入力が可能な蓄熱運転スイッチなどの入力手段を設け、そのスイッチの状態で蓄熱運転の判断を直接行っても良い。
【００３１】
（参考例２）
図３に示すように、熱源機４には圧縮機停止検知手段１８が、熱源機４に備えられた圧縮機がサーモ停止をするか監視するように接続されている。熱源機４は、空調用熱交換器の出口水温度を監視しており、出口水温度が設定温度である冷房時７℃、暖房時５０℃を超える時、つまり、中間期でもともと空調負荷が軽負荷の時や、建物内の温度が設定温度に達すると熱源機により生成した冷水または温水はファンコイルユニット５あるいは蓄熱手段１で熱交換されず設定温度を超える水温となるため、圧縮機の運転が不用となり圧縮機のサーモ停止を行う。圧縮機停止検知手段１８は、熱源機４が暖房運転サイクルで運転中に圧縮機を停止する前述の条件となり、圧縮機を停止しようとするのを検知すると、給湯用ポンプ８を動作させて給湯運転を開始する構成としている。
【００３２】
上記構成により、熱源機４の圧縮機を停止させることなく、給湯運転を行うことができる。
【００３３】
したがって、軽負荷時に発生する熱源機の圧縮機の発停回数を減少させ、熱源機への負担を軽減し、また、圧縮機の起動電力および圧縮機の立ち上げ時の電力等無駄な電力を押さえ、さらに同時に給湯運転を行うことで効率良い電力の使用が可能な躯体蓄熱を利用した空気調和・蓄熱・給湯システムが実現できる。
【００３４】
（実施例２）
図５に示すように、給湯貯湯槽７に備えられた加熱用電気ヒータの電気回路内に加熱用電気ヒータへの通電を遮断するようにリレー１９を備え、リレー１９はリレー制御手段２０によって開閉を制御するように接続されている。給湯貯湯槽７に備えられた加熱用電気ヒータによる給湯貯湯槽の水を加熱する給湯運転は、深夜電力時間帯が開始される午後１１時から開始され、深夜電力時間帯が終了する午前７時に終了する。リレー制御手段２０は、タイマー手段が午後１１時から午前１時までの２時間、リレー１９を開放状態にし、加熱用電気ヒータへの通電を遮断する構成としている。
【００３５】
上記構成により、電気ヒータによる給湯貯湯槽の水を加熱する給湯運転を強制的に遮断し、熱源機４による給湯貯湯槽の水を加熱する給湯運転を優先して行うことができる。
【００３６】
したがって、熱源機による給湯貯湯槽の水を加熱する給湯運転が充分に発揮できる躯体蓄熱を利用した空気調和・蓄熱・給湯システムが実現できる。
【００３７】
なお、実施例では、加熱用電気ヒータへの通電を遮断する時間を２時間としたが、加熱用電気ヒータの能力が、その後の給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する午前７時までに給湯貯湯槽７内の水を沸き上げることが可能であれば、どのような時間でもよい。
【００４１】
【発明の効果】
以上の実施例から明らかなように、本発明によれば、深夜電力時間帯が開始される時から所定時間前記加熱用電気ヒータへの通電を遮断しヒートポンプである前記熱源機による前記給湯貯湯槽の水を加熱する給湯運転を行いその後の前記加熱用電気ヒータによる前記給湯貯湯槽の水を加熱する給湯運転で深夜電力時間帯が終了する時までに前記給湯貯湯槽内の水を沸き上げるようにし、給湯用ポンプが前記給湯貯湯槽下部の水を前記熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させたことにより、電気ヒータによる給湯貯湯槽の水を加熱する給湯運転を強制的に遮断し、熱源機による給湯貯湯槽の水を加熱する給湯運転を優先して行うことで、熱源機による給湯貯湯槽の水を加熱する給湯運転が充分に発揮できるという有利な効果が得られる躯体蓄熱を利用した空気調和・蓄熱・給湯システムを提供できる。また、本発明によれば、給湯用ポンプが給湯貯湯槽下部の水をヒートポンプである熱源機を通って前記給湯貯湯槽下部に戻し循環するように搬送させた構成により、熱源機のみにより給湯貯湯槽の水を加熱する給湯運転を行う際、給湯貯湯槽内の温水と、給湯によって使用された水量を補充した給水とを撹拌することなく効率良く給湯貯湯槽の水を加熱する給湯運転を行うことが可能となる有利な効果が得られる躯体蓄熱を利用した空気調和・蓄熱・給湯システムを提供できる。
【図面の簡単な説明】
【図１】本発明の実施例１の躯体蓄熱を利用した空気調和・蓄熱・給湯システムを概略的に示す回路構成図
【図２】参考例１の躯体蓄熱を利用した空気調和・蓄熱・給湯システムを概略的に示す回路構成図
【図３】参考例２の躯体蓄熱を利用した空気調和・蓄熱・給湯システムを概略的に示す回路構成図
【図４】本発明の実施例２の躯体蓄熱を利用した空気調和・蓄熱・給湯システムを概略的に示す回路構成図
【図５】従来の空調システムの回路構成を概略的に示す回路構成図
【符号の説明】
１蓄熱手段
２配管
３バルブ
４熱源機
５ファンコイルユニット
６空調用ポンプ
７給湯貯湯槽
８給湯用ポンプ
９槽内温度検知手段
１０給湯運転開始判定手段
１１給湯温度検知手段
１２給湯運転終了判定手段
１３制御手段
１４タイマー手段
１５空調運転監視手段
１６蓄熱運転監視手段
１７サイクル切換手段
１８圧縮機停止検知手段
１９リレー
２０リレー制御手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioning, heat storage, and hot water supply system that uses frame heat storage, and more specifically, stores air-conditioning energy in concrete under the floor by nighttime power, and uses heat generated during operation of a heat source machine for hot water supply. The present invention relates to an air conditioning, heat storage, and hot water supply system that uses frame heat storage to generate hot water.
[0002]
[Prior art]
In the heat storage system that uses the space under the floor, heat storage materials such as concrete are laid under the floor, piping, ducts, and air transport spaces are provided inside the heat storage material, and heat exchange such as cold / hot water and cold / hot air is performed. It is known to store a heat storage material by cooling or heating by feeding a refrigerant. It is also known that hot water for hot water supply is generated by recovering exhaust heat of a heat source device generated during cooling.
[0003]
Conventionally, this type of air conditioning, heat storage, and hot water supply system is known as described in JP-A-10-253097.
[0004]
The system will be described below with reference to FIG.
[0005]
As shown in the figure, the cold water generated by the heat pump unit 104 is provided with a heat exchanger 103 installed on the concrete 102 under the floor of the building insulated by the heat insulating material 101 and a heat pump unit 104 connected to the heat exchanger 103. Or warm water is supplied and the concrete 103 under the floor in a building is cooled or heated. Thereby, the room is cooled and heated by radiation from the concrete 102 under the floor. Further, the heat pump unit 104 is connected to a heat exchanger 105 for blowing installed in the building, performs air heat exchange, and supplies hot air or cold air to the room. Further, a hot water supply coil as a hot water supply heat exchanger is connected to the heat pump unit 104, and hot water is produced by the high-temperature refrigerant sent from the heat pump unit 104 and the hot water is stored in the hot water storage tank 106.
[0006]
[Problems to be solved by the invention]
Hot water hot water storage tanks are generally those that use electric power at night to heat hot water with an electric heater. Water is supplied from the bottom of the tank to replenish the amount of water used by the hot water supply, and hot water is supplied from the top of the tank. The lower cold water is taken out of the tank , heated by an electric heater, and returned to the tank from the upper part of the tank. Moreover, hot water for hot water supply in the hot water storage hot water tank is boiled to a high temperature of about 100 ° C., and mixed with normal temperature water supply at the time of hot water supply to secure hot water storage amount. However, since the hot water generated by the heat generated from the heat source machine heat pump is limited to about 60 ° C. from 50 ° C., and hot water of 100 ° C. in hot water hot water storage tank in the supplying hot water generation process, it is used by the water heater Therefore, there is a problem that the temperature of the hot water in the hot water hot water storage tank is lowered by stirring the hot water supply water supplemented with the amount of water, and a hot water supply system that can efficiently perform hot water supply operation of the water in the hot water hot water storage tank is required . Also, as described above, since the well warmed hot water by an electrical heater in the hot water hot water tank, there is a problem that the hot water supply operation while the hot water supply operation by the heat source apparatus is not sufficiently performed resulting in completed, the heat source equipment There is a demand for a hot water supply system that can fully perform the hot water supply operation.
[0007]
The present invention solves such a conventional problem, and when performing hot water supply operation with a heat source device, the hot water of 100 ° C. in the hot water storage tank and the supply water supplemented with the amount of water used by the hot water supply are agitated. it is intended to supply efficiently can perform hot-water supply operation, or air conditioning, heat storage and hot water supply system using the precursor heat storage hot-water supply operation can be sufficiently exhibited by the heat source equipment without.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the air conditioning, heat storage, and hot water supply system of the present invention includes a heat storage means including a pipe and a valve through which cold water or hot water can flow into the concrete insulated by a heat insulating material under the floor of the building, A fan coil unit that supplies cold air or hot air, a heat source device that is a heat pump that generates cold water or hot water, the heat storage means that is connected to the heat source device by piping for the cold water or hot water generated by the heat source device, and the fan coil An air conditioning pump for transporting to the unit, and a hot water storage tank and a hot water supply pump connected by piping so as to take in heat generated from the heat source apparatus, and the hot water supply pump supplies water from the hot water storage tank to the heat source apparatus. The cold water or the hot water generated by the heat source machine is passed through the pipe by opening the valve to be circulated through the pipe, Air conditioning, heat storage, and hot water using frame heat storage, in which hot water is supplied from the lower part of the hot water storage tank to the hot water storage tank when hot water is used from the upper part of the hot water storage tank. In the system, a relay for cutting off energization of an electric heater for heating provided in the hot water storage tank, timer means for recognizing a current time, and relay control for controlling opening and closing of the relay from time information from the timer means Means for shutting off the energization to the heating heater for a predetermined time from the start of the midnight power time zone, and performing a hot water supply operation for heating the water in the hot water hot water storage tank by the heat source device, and then for the heating In the hot water supply operation for heating the water in the hot water storage hot water tank using an electric heater, the water in the hot water hot water storage tank is boiled up until the end of the midnight power hours. It is an air conditioning, heat storage, and hot water supply system that uses body heat storage, forcibly shuts off the hot water supply operation that heats the water in the hot water hot water storage tank by an electric heater for a predetermined time from the start of the midnight power hours Priority is given to the hot water supply operation for heating the water in the hot water hot water storage tank by the machine, and the hot water storage water tank by the time when the midnight power time period ends in the hot water supply operation for heating the water in the hot water hot water storage tank by the heating heater thereafter The water in the hot water supply tank is conveyed so that the water in the hot water supply tank is returned to the lower part of the hot water supply hot water tank through the heat source unit and circulated .
[0015]
ADVANTAGE OF THE INVENTION According to this invention, the air conditioning, heat storage, and hot water supply system using frame heat storage which can fully exhibit the hot water supply operation which heats the water of the hot water storage hot water tank by a heat source machine can be provided. Also, heat storage means equipped with piping and valves that allow cold water or hot water to flow inside the concrete insulated by a heat insulating material under the floor of the building, a fan coil unit that supplies cold air or hot air, and cold water or hot water are generated A heat source device that is a heat pump, an air conditioning pump that conveys cold water or hot water generated by the heat source device to the heat storage means connected to the heat source device and the fan coil unit, and heat generated by the heat source device A hot water storage tank and a hot water supply pump connected to each other by piping, and an electric heater for heating provided in the hot water storage tank, and the hot water supply pump passes the water of the hot water storage tank through the heat source device. Cold water or hot water generated by the heat source device is passed through the pipe by being conveyed so as to circulate and opening the valve, and the hot water storage hot water In the air conditioning / heat storage / hot water system using the frame heat storage, the hot water is replenished into the hot water storage tank from the lower part of the hot water storage tank when the hot water is used for hot water supply from the upper part of the hot water storage tank. Air conditioning / heat storage using a body heat storage, wherein the hot water supply pump is configured to convey the water in the lower part of the hot water hot water storage tank so as to circulate back to the lower part of the hot water hot water storage tank through the heat source unit. This is a hot water supply system. According to the present invention, when performing a hot water supply operation that heats the water in the hot water storage hot water tank only by the heat source device, the hot water in the hot water hot water storage tank and the hot water supplemented with the amount of water used by the hot water supply are efficiently stirred. It is possible to provide an air conditioning, heat storage, and hot water supply system using frame heat storage capable of performing a hot water supply operation for heating water in a hot water storage tank.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, heat storage means including a pipe and a valve through which cold water or hot water can flow is supplied into the concrete insulated by a heat insulating material under the floor of the building, and cold air or hot air is supplied. A fan coil unit, a heat source device that is a heat pump that generates cold water or hot water, and an air conditioner that conveys the cold water or hot water generated by the heat source device to the heat storage means piped to the heat source device and the fan coil unit A hot water storage tank and a hot water supply pump that are connected by piping so as to take in heat generated from the heat source unit, and the hot water supply pump circulates the water in the hot water storage tank through the heat source unit Cold water or hot water generated by the heat source device is passed through the pipe by conveying and opening the valve, and the hot water in the hot water storage tank is the hot water supply. In an air conditioning, heat storage, and hot water system that uses body heat storage in which hot water is replenished into the hot water storage hot water tank from the lower part of the hot water hot water storage tank when used for hot water supply from the upper part of the hot water tank, the hot water hot water storage tank is provided. A relay that shuts off the power supply to the heating electric heater, timer means that can recognize the current time, and relay control means that controls opening and closing of the relay based on time information from the timer means, and a midnight power time period starts When the heating electric heater is turned off for a predetermined time, the hot water supply operation for heating the water in the hot water hot water storage tank is performed by the heat source device, and the water in the hot water hot water storage tank is heated by the electric heater for heating thereafter. wherein said to raise boiling water hot water hot water storage tank, the hot water supply pump of the hot water hot water tank bottom water until the midnight power time zone is completed hot-water supply operation to By that through the source machine is conveyed to circulate back to the hot water hot water tank bottom, forcing the hot water supply operation for heating water of the hot water hot water tank according to a predetermined time electric heater from when the midnight power time zone is started Priority is given to the hot water supply operation that heats the water in the hot water hot water storage tank by the heat source machine, and then the time when the midnight power hours end by the hot water supply operation that heats the water in the hot water hot water storage tank by the electric heater for heating Since the water in the hot water storage tank is boiled, the hot water supply operation of heating the water in the hot water storage tank by the heat source device can be sufficiently exerted. Further, the invention according to claim 2 is a heat storage means including a pipe and a valve through which cold water or hot water can flow in the concrete insulated by a heat insulating material under the floor of the building, and a fan for supplying cold air or hot air A coil unit , a heat source device that is a heat pump that generates cold water or hot water, and an air conditioning pump that conveys the cold water or hot water generated by the heat source device to the heat storage means connected to the heat source device and the fan coil unit A hot water storage tank and a hot water supply pump connected to take in heat generated from the heat source device, and a heating electric heater provided in the hot water storage tank, wherein the hot water supply pump is the hot water storage tank Water is circulated through the heat source machine and the valve is opened so that cold water or hot water generated by the heat source machine is Air conditioning using body heat storage in which water is supplied and water is supplied from the lower part of the hot water storage tank to the hot water storage tank when the hot water in the hot water storage tank is used for hot water supply from the upper part of the hot water storage tank In the heat storage / hot water system, the hot water supply pump is configured to convey the water in the lower part of the hot water storage tank through the heat source unit so that it is circulated back to the lower part of the hot water storage tank, and only the heat source unit When performing the hot water supply operation for heating the water in the hot water storage hot water tank, the hot water supply operation for heating the water in the hot water hot water storage tank is performed without stirring the hot water in the hot water supply hot water storage tank.
[0020]
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0021]
【Example】
Example 1
As shown in FIG. 1, the heat storage means 1 includes a pipe 2 and a valve 3 through which cold water or hot water can flow, inside a concrete that is insulated by a heat insulating material around the floor of the building, and opens the valve 3. Thus, cold water or hot water generated by the heat source device 4 is passed through the pipe 2, and the concrete of the heat storage means 1 is cooled or heated to store heat. The upper surface of the heat storage means 1 is not insulated by the heat insulating material, and the heat stored in the concrete becomes radiant heat and is released into the building. The fan coil unit 5 is installed in a building and connected to the heat source unit 4 together with the heat storage means 1 by piping. When the fan coil unit 5 performs the air conditioning operation, the cold water or hot water generated by the heat source unit 4 is passed through the heat exchange coil inside the fan coil unit 5, and cold air or Supply hot air. Water flow to the heat storage means 1 and the fan coil unit 5 is conveyed by the air conditioning pump 6. The hot water storage tank 7 is also connected to the heat source unit 4 by piping so that the hot water pump 8 conveys the water in the lower part of the hot water storage tank 7 through the heat source unit 4 to the lower part of the hot water storage tank 7 for circulation. The circulating water is heated by the heat generated by the heat source unit 4 to raise the temperature of the cold water at the lower part of the hot water storage tank 7. About the hot water supply operation which heats the water of the hot water storage hot water tank by the heat source device 4, the tank central part of the hot water hot water storage tank 7 is provided with a tank temperature detecting means 9 for detecting the water temperature in the tank. The water temperature signal in the tank is transmitted to the hot water supply operation start determination means 10. The hot water supply operation start determination means 10 uses hot water in the hot water storage tank 7 by hot water supply from the upper part of the hot water storage tank 7 (shown in FIG. 4) , and replenishes water into the tank from the lower part of the hot water storage tank 7 (FIG. 4). When the water level of the supplied cold water rises and reaches the position where the tank temperature detecting means 9 is installed, the temperature change is detected and the hot water storage tank of the hot water storage tank by the heat source device 4 is detected . The start of hot water supply operation for heating water is determined. The hot water supply temperature detection means 11 is provided so as to detect the temperature in the pipe connecting the heat source device 4 and the hot water supply hot water storage tank 7, and the detected water temperature signal in the pipe is determined as the hot water supply operation end determination means 12. Sending to. When the temperature of the hot water supply operation at the lower part of the hot water storage tank 7 heated by the heat generated by the heat source device 4 reaches 50 ° C., which is the limit temperature that can be heated by the heat generated from the heat source device 4, The end of the hot water supply operation for heating the water in the hot water storage hot water tank by the heat source device 4 is determined. The control means 13 is configured to control the operation of the hot water supply pump 8 based on the determination results from the hot water supply operation start determination means 10 and the hot water supply operation end determination means 12.
[0022]
With the above configuration in which the hot water supply pump conveys the water in the lower part of the hot water hot water storage tank through the heat source device so as to circulate back to the lower part of the hot water hot water storage tank, the hot water supply operation for heating the water in the hot water hot water storage tank only by the heat source device In this case, a hot water supply operation for heating the water in the hot water storage hot water tank can be performed without stirring the hot water in the hot water hot water storage tank .
[0023]
Therefore, when performing a hot water supply operation in which the water in the hot water storage hot water tank is heated only by the heat source device, the hot water supply is efficiently carried out without stirring the hot water at 100 ° C. in the hot water hot water storage tank and the hot water supplemented with the amount of water used by the hot water supply. An air-conditioning, heat storage, and hot water supply system using frame heat storage capable of performing a hot water supply operation for heating water in a hot water tank can be realized.
[0024]
In addition, in the Example, it was set as the structure provided with the tank temperature detection means 9 in the tank center part of the hot water storage tank 7, However, The position installed according to the calorie | heat amount which generate | occur | produces in the heat-source equipment 4, and the conveyance capability of the hot water supply pump 8 It is good as a mechanism that can be changed.
[0025]
Further, it is more preferable that the tank temperature detection means 9 is provided in a plurality of portions of the hot water storage tank 7 so that the water level is precisely detected and the operation of the hot water supply pump 8 is controlled.
[0026]
( Reference Example 1 )
As shown in FIG. 2, the control means 13 monitors the timer means 14 capable of recognizing the current time, the air conditioning operation monitoring means 15 for monitoring the operation state of the fan coil unit 5, and the heat storage operation state by the heat storage means 1. Heat storage operation monitoring means 16 is provided. The air-conditioning operation monitoring means 15 monitors whether or not the fan coil unit 5 is operating while the timer means 14 indicates from 8:00 pm to 11:00 pm. The above-mentioned time is a resting time for the resident to stay in the building and heal the fatigue of the daily life, and the fan coil unit 5 is operated in the season when air conditioning is required. Further, when the fan coil unit 5 is not operated, it is assumed that the fan coil unit 5 will not be operated after that time. Therefore, when the heat source unit 4 is in the cooling operation cycle, the operation mode is switched to the heating operation cycle. This is the condition for hot water operation. The heat storage operation monitoring means 16 monitors the operation of the heat storage means 1 when the timer means 14 indicates 6 am. Since the heat storage operation is performed until 7:00 am, which is the end time of the midnight power time zone, if the heat storage operation is not performed at 6:00 am, it can be recognized that the heat storage operation of the day is not performed. In addition, since there is a high possibility that the heat storage operation is not performed on the next day when the heat storage operation is not performed at 11 pm, when the heat source unit 4 is in the cooling operation cycle, the heating operation cycle is performed. It becomes the condition to switch to and perform hot water supply operation. Since the hot water supply operation by switching the operation cycle of the air-conditioning operation of the heat source unit 4 to the heating cycle is performed from 11:00 pm, which is a late-night electricity time zone in which the electricity rate is inexpensive, the cycle switching unit 17 includes the timer unit 14 in the afternoon. When 11 o'clock is indicated, when the control means 13 controls the operation of the hot water supply pump 8 based on the monitoring results from the air conditioning operation monitoring means 15 and the heat storage operation monitoring means 16, the operation cycle of the cooling and heating operation of the heat source unit 4 is heated. It is configured to switch to a cycle.
[0027]
With the above configuration, the hot water supply operation can be performed without applying an excessive burden to the heat source device that controls the hot water supply operation from the operation state of the air conditioning operation and the heat storage operation.
[0028]
Therefore, it is possible to realize an air conditioning / heat storage / hot water supply system using a frame heat storage capable of performing a hot water supply operation without imposing an excessive burden on the heat source device.
[0029]
In the reference example, the air-conditioning operation monitoring means 15 uses the timer means 14 as a monitoring time from 8:00 pm to 11:00 pm, but in the time zone in which the operation of the fan coil unit after 11 pm can be predicted. Any time zone.
[0030]
Moreover, although the heat storage operation monitoring means 16 is monitoring the heat storage operation state at 6 am, any time may be used as long as the heat storage operation can be determined from the previous day. In addition, any method may be used as long as it can determine the heat storage operation from the previous day, and furthermore, the control means 13 is provided with input means such as a heat storage operation switch that can be input by a resident, and the state of the switch The determination of the heat storage operation may be made directly.
[0031]
( Reference Example 2 )
As shown in FIG. 3, a compressor stop detection means 18 is connected to the heat source unit 4 so as to monitor whether the compressor provided in the heat source unit 4 stops thermostating. The heat source unit 4 monitors the outlet water temperature of the heat exchanger for air conditioning, and when the outlet water temperature exceeds the set temperature of 7 ° C. during cooling and 50 ° C. during heating, that is, the air conditioning load is originally in the intermediate period. When the load is light or when the temperature in the building reaches the set temperature, the cold water or hot water generated by the heat source unit is not heat exchanged by the fan coil unit 5 or the heat storage means 1 and the water temperature exceeds the set temperature. Operation is unnecessary and the compressor is stopped. The compressor stop detection means 18 operates as described above for stopping the compressor while the heat source unit 4 is operating in the heating operation cycle. When detecting that the compressor is about to stop, the compressor stop detection unit 18 operates the hot water supply pump 8 to supply hot water. It is configured to start operation.
[0032]
With the above configuration, the hot water supply operation can be performed without stopping the compressor of the heat source unit 4.
[0033]
Therefore, the number of start and stop times of the compressor of the heat source machine that occurs at light load is reduced, the burden on the heat source machine is reduced, and useless power such as compressor start-up power and compressor start-up power is reduced. An air conditioning, heat storage, and hot water supply system that uses frame heat storage that enables efficient use of electric power by holding down and simultaneously performing hot water supply operation can be realized.
[0034]
(Example 2 )
As shown in FIG. 5, a relay 19 is provided in the electric circuit of the heating electric heater provided in the hot water storage tank 7 so as to cut off the energization to the heating electric heater, and the relay 19 is opened and closed by the relay control means 20. Connected to control. The hot water supply operation for heating the water in the hot water storage hot water tank by the electric heater for heating provided in the hot water storage hot water tank 7 starts at 11:00 pm when the midnight power time zone starts, and at 7:00 am when the midnight power time zone ends. finish. The relay control means 20 is configured such that the timer means opens the relay 19 for two hours from 11:00 pm to 1:00 am and cuts off the power supply to the heating electric heater.
[0035]
With the above configuration, the hot water supply operation for heating the water in the hot water supply hot water storage tank by the electric heater can be forcibly cut off, and the hot water supply operation for heating the water in the hot water supply hot water storage tank by the heat source device 4 can be performed with priority.
[0036]
Therefore, it is possible to realize an air conditioning / heat storage / hot water supply system using the frame heat storage that can sufficiently exhibit the hot water supply operation of heating the water in the hot water storage hot water tank by the heat source device.
[0037]
In the embodiment, the time for cutting off the energization to the heating electric heater is set to 2 hours. However, the heating electric heater has a capacity of midnight electric power in the hot water supply operation for heating the water in the hot water hot water storage tank. Any time may be used as long as it is possible to boil the water in the hot water storage tank 7 by 7 am.
[0041]
【The invention's effect】
As is clear from the above embodiments, according to the present invention, the hot water storage tank by the heat source device that is a heat pump that cuts off the power supply to the heating electric heater for a predetermined time from the start of the midnight power time period. The hot water supply operation is performed to heat the water in the hot water supply bath, and the water in the hot water supply hot water storage bath is heated by the electric heater for heating thereafter, and the water in the hot water supply hot water storage bath is boiled up until the end of the midnight power hours in the hot water supply operation. The hot water supply pump heats the water in the hot water hot water storage tank by an electric heater by causing the hot water supply pump to circulate the water in the lower part of the hot water hot water storage tank through the heat source unit and return to the lower part of the hot water hot water storage tank. The hot water supply operation that heats the water in the hot water storage hot water tank by the heat source device can be fully demonstrated by preferentially performing the hot water supply operation that heats the water in the hot water hot water storage tank by the heat source device. Effect can be provided an air conditioning, heat storage and hot water supply system using the precursor thermal storage obtained. Further, according to the present invention, the hot water supply pump is configured to convey the water in the lower portion of the hot water storage tank through the heat source device, which is a heat pump, so that the water is circulated back to the lower portion of the hot water storage tank. When performing hot water supply operation to heat the water in the tank, hot water supply operation to efficiently heat the water in the hot water storage tank without stirring the hot water in the hot water storage tank and the water supplemented with the amount of water used by the hot water supply Therefore, it is possible to provide an air conditioning / heat storage / hot water supply system that uses a frame heat storage capable of obtaining an advantageous effect.
[Brief description of the drawings]
FIG. 1 is a circuit configuration diagram schematically showing an air conditioning / heat storage / hot water supply system using frame heat storage according to a first embodiment of the present invention. FIG. 2 is an air conditioning / heat storage / hot water supply using frame heat storage of Reference Example 1 . FIG. 3 is a circuit configuration diagram schematically showing the system. FIG. 3 is a circuit configuration diagram schematically showing an air conditioning / heat storage / hot water supply system using the frame heat storage of Reference Example 2. FIG. 4 is a frame heat storage according to the second embodiment of the present invention. Fig. 5 is a circuit configuration diagram schematically showing the air conditioning, heat storage, and hot water supply system using the air. Fig. 5 is a circuit configuration diagram schematically showing the circuit configuration of the conventional air conditioning system.
DESCRIPTION OF SYMBOLS 1 Heat storage means 2 Piping 3 Valve 4 Heat source machine 5 Fan coil unit 6 Air conditioning pump 7 Hot water storage tank 8 Hot water supply pump 9 In-tank temperature detection means 10 Hot water supply operation start determination means 11 Hot water supply temperature detection means 12 Hot water supply operation end determination means 13 Control means 14 Timer means 15 Air-conditioning operation monitoring means 16 Thermal storage operation monitoring means 17 Cycle switching means 18 Compressor stop detection means 19 Relay 20 Relay control means

Claims

Heat storage means equipped with piping and valves that allow cold water or hot water to flow inside the concrete, which is insulated with heat insulating material under the floor of the building, a fan coil unit that supplies cold air or hot air, and a heat pump that generates cold water or hot water A heat source unit, an air conditioning pump that conveys cold water or hot water generated by the heat source unit to the heat storage means connected to the heat source unit and the fan coil unit, and heat generated from the heat source unit The hot water storage tank and the hot water supply pump are connected to each other in such a manner that the hot water supply pump circulates the water in the hot water storage hot water tank through the heat source unit and opens the valve to open the heat source unit. Cold water or hot water generated by the water is passed through the pipe, and hot water in the hot water storage hot water tank is used by hot water supply from the upper part of the hot water hot water storage tank. Then, in the air conditioning, heat storage and hot water supply system using the frame heat storage in which water is supplied from the lower part of the hot water hot water storage tank to the hot water hot water storage tank, energization of the electric heater for heating provided in the hot water hot water storage tank is cut off. And a relay control means for controlling opening and closing of the relay from time information from the timer means, and the heating for a predetermined time from the start of a midnight power period Power supply operation to cut off energization to the electric heater and heat the water in the hot water hot water storage tank by the heat source device, and then heat the water in the hot water hot water storage tank by the electric heater for heating at midnight power hours wherein the raise boiling water hot water hot water storage tank, the hot water hot water tank bottom the hot water supply pump through the heat source machine the hot water hot water tank bottom water by the time but to end Air conditioning, heat storage and hot water supply system using the precursor thermal storage, characterized in that is conveyed to the return circulation.

Heat storage means equipped with piping and valves that allow cold water or hot water to flow inside the concrete, which is insulated with heat insulating material under the floor of the building, a fan coil unit that supplies cold air or hot air, and a heat pump that generates cold water or hot water A heat source unit, an air conditioning pump that conveys cold water or hot water generated by the heat source unit to the heat storage means connected to the heat source unit and the fan coil unit, and heat generated from the heat source unit The hot water storage tank and hot water supply pump connected in a similar manner and an electric heater for heating provided in the hot water storage tank, and the hot water supply pump circulates the water in the hot water storage tank through the heat source device. When the valve is opened, cold water or hot water generated by the heat source device is passed through the pipe to supply water to the hot water storage tank. In the air conditioning, heat storage, and hot water system using the frame heat storage in which water is replenished into the hot water storage hot water tank from the lower part of the hot water hot water storage tank when hot water is used from the upper part of the hot water hot water storage tank. An air-conditioning / heat-storage / hot-water system using housing heat storage, characterized in that a pump conveys water in the lower part of the hot-water storage tank through the heat source unit so as to circulate back to the lower part of the hot-water storage tank. .