JP3211168U

JP3211168U - Building cogeneration system

Info

Publication number: JP3211168U
Application number: JP2017000865U
Authority: JP
Inventors: 親幸山本
Original assignee: 親幸山本
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2017-06-29
Anticipated expiration: 2027-02-28

Abstract

【課題】共用設備に電力を送る発電設備を備え、かつセントラル給湯システムを有しているビルにおいて、更にエネルギーの有効理由を図ることが可能なビルのコジェネレーションシステムを提供する。【解決手段】セントラル給湯システム１１を有するビルのコジェネレーションシステム１０であって、ビルの共用設備１２に電力を供給する発電設備１４と、発電設備１４から回収した熱で給水源から供給された水を加熱してセントラル給湯システム１１の給湯手段１５の入側に供給する予備加熱設備１６とを有し、給湯手段１５により加熱された水は、セントラル給湯システム１１の貯湯タンク１８内に５０〜６０℃の温水として保持される。【選択図】図１The present invention provides a building cogeneration system that has a power generation facility that sends electric power to a common facility and that has a central hot water supply system, and is capable of further validating the energy. A building cogeneration system having a central hot water supply system, a power generation facility for supplying power to a common building facility, and water supplied from a water supply source by heat recovered from the power generation facility. And a preheating facility 16 that heats the water and supplies it to the inlet side of the hot water supply means 15 of the central hot water supply system 11. Water heated by the hot water supply means 15 is stored in the hot water storage tank 18 of the central hot water supply system 11 in the range of 50-60. Maintained as warm water at ℃. [Selection] Figure 1

Description

本考案は、セントラル給湯システムを有するビルのコジェネレーションシステムに関する。 The present invention relates to a cogeneration system for a building having a central hot water supply system.

コジェネレーションシステムでは、発電時に発生する熱エネルギーを給湯や暖房等の熱利用機器に供給するため、発生する電気エネルギーと熱エネルギーの両者を有効利用できるシステムとして多数実用化されている（例えば、特許文献１、２参照）。また、コジェネレーションシステムを導入すると、電気エネルギーと熱エネルギーの総エネルギーコストを、導入しない場合と比べて低減することができる。
多数の住居（居室）を備えるビルにおいては、例えば、共用灯等の共用設備があり、セントラルヒーティングが採用され、共用のボイラー及び貯湯タンクが用いられている。 Many cogeneration systems have been put to practical use as systems that can effectively use both generated electric energy and heat energy to supply heat energy generated during power generation to heat-using equipment such as hot water and heating (for example, patents). References 1 and 2). Moreover, when a cogeneration system is introduced, the total energy cost of electric energy and thermal energy can be reduced as compared with the case where it is not introduced.
In a building having a large number of residences (rooms), for example, there are shared facilities such as shared lights, central heating is used, and a common boiler and hot water storage tank are used.

特許第４２７３６４０号公報Japanese Patent No. 4273640 特許第５２９７６９０号公報Japanese Patent No. 5297690

しかしながら、共用設備の電力負担は通常、ビルのオーナーが負担するので、比較的安価に電力を供給できるディーゼルエンジン発電機等の発電設備をビルに設置し、発電した電力を共用設備に供給し、更にビル自体がセントラルヒーティングのシステム（セントラル給湯システム）を有している場合があるが、この場合、発電設備から発生する余剰な熱については有効利用が行われていないのが現状である。 However, since the building's power burden is usually borne by the building owner, a power generation facility such as a diesel engine generator that can supply power at a relatively low cost is installed in the building, and the generated power is supplied to the common facility. Furthermore, the building itself may have a central heating system (central hot water supply system). In this case, however, the surplus heat generated from the power generation facility is not effectively used.

本考案はかかる事情に鑑みてなされたもので、共用設備に電力を送る発電設備を備え、かつセントラル給湯システムを有しているビルにおいて、更にエネルギーの有効理由を図ることが可能なビルのコジェネレーションシステムを提供することを目的とする。 The present invention has been made in view of such circumstances. In a building having a power generation facility that sends power to a common facility and having a central hot water supply system, it is possible to further improve the energy efficiency of the building. The purpose is to provide a generation system.

前記目的に沿う本考案に係るビルのコジェネレーションシステムは、セントラル給湯システムを有するビルのコジェネレーションシステムであって、
前記ビルの共用設備に電力（電気エネルギー）を供給する発電設備と、前記発電設備から回収した熱（熱エネルギー）で給水源から供給された水を加熱して前記セントラル給湯システムの給湯手段の入側に供給する予備加熱設備とを有し、
前記給湯手段により加熱された水は、前記セントラル給湯システムの貯湯タンク内に５０〜６０℃の温水として保持される。 The building cogeneration system according to the present invention for the purpose is a building cogeneration system having a central hot water supply system,
A power generation facility that supplies electric power (electric energy) to the common facility of the building, and water supplied from a water supply source is heated by heat (thermal energy) recovered from the power generation facility to enter the hot water supply means of the central hot water supply system. Preheating equipment to be supplied to the side,
The water heated by the hot water supply means is held as hot water of 50 to 60 ° C. in the hot water storage tank of the central hot water supply system.

本考案に係るビルのコジェネレーションシステムにおいて、前記発電設備は、一方が運転中には他方が停止中となる対となる第１、第２の発電手段を有し、
前記予備加熱設備は、前記第１の発電手段から熱を回収する第１の熱回収部と、該第１の熱回収部を介して供給される熱で前記給水源と前記給湯手段の入側とを接続する給水配管内を通過する水を加熱する第１の予備加熱器とを備えた第１の予備加熱手段、及び前記第２の発電手段から熱を回収する第２の熱回収部と、該第２の熱回収部を介して供給される熱で前記給水配管内を通過する水を加熱する第２の予備加熱器とを備えた第２の予備加熱手段を有する構成とすることが好ましい。 In the building cogeneration system according to the present invention, the power generation facility has first and second power generation means that form a pair in which one is operating and the other is stopped.
The preheating facility includes a first heat recovery unit that recovers heat from the first power generation unit, and an inlet side of the water supply source and the hot water supply unit by heat supplied through the first heat recovery unit. A first preheating means provided with a first preheater for heating water passing through the water supply pipe connected to the second heat recovery section, and a second heat recovery section for recovering heat from the second power generation means, And a second preheating means including a second preheater that heats the water passing through the water supply pipe with heat supplied through the second heat recovery section. preferable.

発電設備が第１、第２の発電手段を、予備加熱設備が第１、第２の予備加熱手段をそれぞれ有するので、第１の発電手段あるいは第１の予備加熱手段が点検又は補修の際は第２の発電手段と第２の予備加熱手段を運転して、第２の発電手段あるいは第２の予備加熱手段が点検又は補修の際は第１の発電手段と第１の予備加熱手段を運転することにより、ビルの共用設備に電力を常に供給することができると共に、給水配管内を通過する水を常に加熱することができる。 Since the power generation equipment has the first and second power generation means, and the preheating equipment has the first and second preheating means, respectively, when the first power generation means or the first preheating means is inspected or repaired, Operate the second power generation means and the second preheating means, and operate the first power generation means and the first preheating means when the second power generation means or the second preheating means is inspected or repaired. By doing so, it is possible to always supply power to the common facilities of the building and to always heat the water passing through the water supply pipe.

本考案に係るビルのコジェネレーションシステムにおいて、前記発電設備は、一方が運転中には他方が停止中となる対となる第１、第２の発電手段を有し、
前記予備加熱設備は、前記第１の発電手段から熱を回収する第１の熱回収部と、前記第２の発電手段から熱を回収する第２の熱回収部と、該第１、第２熱回収部を介して供給される熱で前記給水源と前記給湯手段の入側とを接続する給水配管内を通過する水を加熱する予備加熱器とを有する構成とすることもできる。 In the building cogeneration system according to the present invention, the power generation facility has first and second power generation means that form a pair in which one is operating and the other is stopped.
The preheating facility includes a first heat recovery unit that recovers heat from the first power generation unit, a second heat recovery unit that recovers heat from the second power generation unit, and the first and second It can also be set as the structure which has the preheater which heats the water which passes the inside of the water supply piping which connects the said water supply source and the entrance side of the said hot-water supply means with the heat supplied via a heat recovery part.

発電設備が第１、第２の発電手段を、予備加熱設備が第１、第２熱回収部と予備加熱器をそれぞれ有するので、第１の発電手段あるいは第１熱回収部が点検又は補修の際は第２の発電手段を運転し第２熱回収部を介して予備加熱器に熱を供給することにより、第２の発電手段あるいは第２熱回収部が点検又は補修の際は第１の発電手段を運転し第１熱回収部を介して予備加熱器に熱を供給することにより、ビルの共用設備に電力を常に供給することができると共に、給水配管内を通過する水を常に加熱することができる。 Since the power generation facility has the first and second power generation means, and the preheating facility has the first and second heat recovery units and the preheater, the first power generation unit or the first heat recovery unit is inspected or repaired. When the second power generation means or the second heat recovery section is inspected or repaired by operating the second power generation means and supplying heat to the preheater via the second heat recovery section. By operating the power generation means and supplying heat to the preheater via the first heat recovery unit, it is possible to always supply power to the common facilities of the building and to always heat the water passing through the water supply pipe. be able to.

本考案に係るビルのコジェネレーションシステムにおいて、前記第１、第２の発電手段はそれぞれディーゼルエンジンと、該ディーゼルエンジンで発生した動力で発電を行なう発電機とを有する構成とすることができる。 In the building cogeneration system according to the present invention, each of the first and second power generation means may include a diesel engine and a generator that generates power with the power generated by the diesel engine.

本考案に係るビルのコジェネレーションシステムにおいて、前記第１、第２の発電手段はそれぞれ燃料電池を有する構成とすることもできる。 In the building cogeneration system according to the present invention, each of the first and second power generation means may include a fuel cell.

本考案に係るビルのコジェネレーションシステムにおいて、前記給湯手段は、一方が運転中には他方が停止中となる対となる第１、第２の給湯器を有し、該第１、第２の給湯器は、前記給水配管の下流側と前記貯湯タンクの入側との間に並列に配置されていることが好ましい。
第１、第２の給湯器の中で点検又は補修に伴って一方を停止しても、他方を運転することにより、貯湯タンクに温水を供給することができる。 In the building cogeneration system according to the present invention, the hot water supply means includes first and second hot water heaters that are paired so that one is in operation and the other is stopped. The water heater is preferably arranged in parallel between the downstream side of the water supply pipe and the inlet side of the hot water storage tank.
Even if one of the first and second hot water heaters is stopped for inspection or repair, hot water can be supplied to the hot water storage tank by operating the other.

本考案に係るビルのコジェネレーションシステムにおいて、前記共用設備は該ビルの共用灯を含むのが好ましい。
ビルの共用灯で使用される電気エネルギー量は季節変化等の影響を受け難いので、発電設備の安定運転を行なうことができ、発生する熱エネルギー量が安定化する。このため、電気エネルギーと熱エネルギーの両者を有効利用することが容易にできる。 In the building cogeneration system according to the present invention, it is preferable that the shared facility includes a shared light of the building.
Since the amount of electrical energy used in the building common light is not easily affected by seasonal changes, the power generation facility can be stably operated, and the amount of generated thermal energy is stabilized. For this reason, it is easy to effectively use both electric energy and heat energy.

本考案に係るビルのコジェネレーションシステムでは、発電設備で発電した電力（電気エネルギー）をビルの共用設備に供給し、発電設備で発生した熱を、セントラル給湯システムに送るので、エネルギーの利用効率が高まる。
その結果、発電設備から発生した電力と熱を有効利用することができ、ビルで使用する電気と熱の総エネルギーコストを低減することが可能となる。 In the building cogeneration system according to the present invention, the electric power (electric energy) generated by the power generation facility is supplied to the common facility of the building, and the heat generated by the power generation facility is sent to the central hot water supply system. Rise.
As a result, the power and heat generated from the power generation facility can be used effectively, and the total energy cost of electricity and heat used in the building can be reduced.

本考案の一実施の形態に係るビルのコジェネレーションシステムの説明図である。It is explanatory drawing of the cogeneration system of the building which concerns on one embodiment of this invention. 変形例に係る予備加熱設備の説明図である。It is explanatory drawing of the preheating equipment which concerns on a modification.

続いて、添付した図面を参照しつつ、本考案を具体化した実施の形態につき説明し、本考案の理解に供する。
図１に示すように、本考案の一実施の形態に係るビルのコジェネレーションシステム１０は、セントラル給湯システム１１を有するビル（図示せず）に適用されるコジェネレーションシステムであって、ビルの共用設備１２に含まれる共用灯１３に電力（電気エネルギー）を供給する発電設備１４と、発電設備１４から回収した熱（熱エネルギー）で給水源（図示せず）から供給された水を加熱してセントラル給湯システム１１の給湯手段１５の入側に供給する予備加熱設備１６とを有している。以下、詳細に説明する。 Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a building cogeneration system 10 according to an embodiment of the present invention is a cogeneration system applied to a building (not shown) having a central hot water supply system 11. A power generation facility 14 that supplies electric power (electric energy) to a shared lamp 13 included in the facility 12 and water supplied from a water supply source (not shown) is heated by heat (thermal energy) recovered from the power generation facility 14. And a preheating facility 16 to be supplied to the inlet side of the hot water supply means 15 of the central hot water supply system 11. Details will be described below.

共用設備１２は、共用灯１３の他に、ビルに設置されたエレベータ、ビルの給水タンクに水を供給する給水ポンプ、ビルからの排水を下水道に送り出す排水ポンプ等を含んでいる。なお、この実施の形態では、共用灯１３を除いた共用設備１２の運転に必要な電力は商用電力を購入しているが、共用灯１３を除く共用設備に発電設備１４から電力を送ることもできる。
また、セントラル給湯システム１１は、給水源と給湯手段１５の入側とを接続する給水配管１７と、給湯手段１５により加熱された水を５０〜６０℃の温水として保持する貯湯タンク１８と、貯湯タンク１８内の温水をビル内で循環させる温水ポンプを備えた温水循環配管１９と、温水循環配管１９から分岐して設けられ、温水の取水及び止水を行なう複数の蛇口（図示せず）を有している。従って、給湯手段１５に流入する水を貯湯タンク１８に供給する際に所定温度まで加熱するのに必要な熱エネルギーと、貯湯タンク１８内の温水を５０〜６０℃に保持するために必要な熱エネルギーは購入している。 The shared facility 12 includes, in addition to the shared lamp 13, an elevator installed in the building, a water supply pump that supplies water to the water tank of the building, a drainage pump that sends wastewater from the building to the sewer. In this embodiment, the electric power necessary for the operation of the shared facility 12 excluding the shared lamp 13 is purchased as commercial power. However, power may be sent from the power generation facility 14 to the shared facility other than the shared lamp 13. it can.
The central hot water supply system 11 includes a water supply pipe 17 that connects a water supply source and the inlet side of the hot water supply means 15, a hot water storage tank 18 that holds the water heated by the hot water supply means 15 as hot water of 50 to 60 ° C., and hot water storage A hot water circulation pipe 19 provided with a hot water pump for circulating the hot water in the tank 18 in the building, and a plurality of faucets (not shown) provided from the hot water circulation pipe 19 for taking in hot water and stopping water. Have. Therefore, when supplying the water flowing into the hot water supply means 15 to the hot water storage tank 18, the heat energy necessary for heating to the predetermined temperature and the heat necessary for maintaining the hot water in the hot water storage tank 18 at 50 to 60 ° C. Energy is purchased.

図１に示すように、発電設備１４は、一方が運転中には他方が停止中となる対となる第１、第２の発電手段２０、２１を有している。ここで、第１、第２の発電手段２０、２１はそれぞれディーゼルエンジン２２と、ディーゼルエンジン２２で発生した動力で発電を行なう発電機２３とを有している。発電機２３で発電された電力は、周波数と電圧がそれぞれ所定の値に調整されて共用灯１３に供給される。 As shown in FIG. 1, the power generation facility 14 includes first and second power generation means 20 and 21 that form a pair in which one is in operation and the other is stopped. Here, each of the first and second power generation means 20 and 21 includes a diesel engine 22 and a generator 23 that generates power with the power generated by the diesel engine 22. The electric power generated by the generator 23 is supplied to the common lamp 13 with the frequency and voltage adjusted to predetermined values.

予備加熱設備１６は、第１の発電手段２０のディーゼルエンジン２２を冷却する際に回収した熱で、給水源と給湯手段１５の入側とを接続する給水配管１７内を通過する水を加熱する第１の予備加熱手段２４と、第２の発電手段２１のディーゼルエンジン２２を冷却する際に回収した熱で給水配管１７内を通過する水を加熱する第２の予備加熱手段２５とを有している。
ここで、第１の予備加熱手段２４は、第１の発電手段２０から熱を回収する第１の熱回収部２６と、給水配管１７の一部に組み込まれて第１の熱回収部２６を介して供給される熱で給水配管１７内を通過する水を加熱する第１の予備加熱器２７を備えている。また、第２の予備加熱手段２５は、第２の発電手段２１から熱を回収する第２の熱回収部２８と、給水配管１７の一部に組み込まれて第２の熱回収部２８を介して供給される熱で給水配管１７内を通過する水を加熱する第２の予備加熱器２９を備えている。 The preheating facility 16 heats water passing through the water supply pipe 17 that connects the water supply source and the inlet side of the hot water supply means 15 with heat recovered when the diesel engine 22 of the first power generation means 20 is cooled. The first preheating means 24 and the second preheating means 25 for heating the water passing through the water supply pipe 17 with the heat recovered when the diesel engine 22 of the second power generation means 21 is cooled. ing.
Here, the first preliminary heating unit 24 includes a first heat recovery unit 26 that recovers heat from the first power generation unit 20, and a first heat recovery unit 26 that is incorporated in a part of the water supply pipe 17. The first pre-heater 27 is provided to heat the water passing through the water supply pipe 17 with the heat supplied through the first pre-heater 27. The second preheating means 25 includes a second heat recovery section 28 that recovers heat from the second power generation means 21 and a second heat recovery section 28 that is incorporated in a part of the water supply pipe 17. The second pre-heater 29 is provided to heat the water passing through the water supply pipe 17 with the heat supplied.

これにより、第１の発電手段２０あるいは第１の予備加熱手段２４が点検又は補修の際は第２の発電手段２１と第２の予備加熱手段２５を運転して、第２の発電手段２１あるいは第２の予備加熱手段２５が点検又は補修の際は第１の発電手段２０と第１の予備加熱手段２４を運転することにより、ビルの共用設備１２の共用灯１３に電力を常に供給することができると共に、給水配管１７内を通過する水を常に加熱することができる。 Thus, when the first power generation means 20 or the first preheating means 24 is inspected or repaired, the second power generation means 21 and the second preheating means 25 are operated to operate the second power generation means 21 or When the second preheating means 25 is inspected or repaired, the first power generation means 20 and the first preheating means 24 are operated to always supply power to the shared lamp 13 of the building common facility 12. In addition, the water passing through the water supply pipe 17 can always be heated.

なお、第１、第２の発電手段２０、２１がそれぞれ有するディーゼルエンジン２２と発電機２３を、燃料電池に置き換えてもよい。この場合、第１の発電手段２０の燃料電池を冷却する際に回収した熱、即ち、燃料電池から第１の熱回収部２６を介して回収された熱が第１の予備加熱器２７に供給され、第２の発電手段２１の燃料電池を冷却する際に回収した熱、即ち、燃料電池から第２の熱回収部２８を介して回収された熱が第２の予備加熱器２９に供給され、給水配管１７内を通過する水が加熱される。 In addition, you may replace the diesel engine 22 and the generator 23 which the 1st, 2nd electric power generation means 20 and 21 each have with a fuel cell. In this case, the heat recovered when the fuel cell of the first power generation means 20 is cooled, that is, the heat recovered from the fuel cell via the first heat recovery unit 26 is supplied to the first preheater 27. Then, the heat recovered when the fuel cell of the second power generation means 21 is cooled, that is, the heat recovered from the fuel cell via the second heat recovery unit 28 is supplied to the second preheater 29. The water passing through the water supply pipe 17 is heated.

セントラル給湯システム１１の給湯手段１５は、一方が運転中には他方が停止中となる対となる第１、第２の給湯器３０、３１を有している。第１、第２の給湯器３０、３１は、給水配管１７の下流側と貯湯タンク１８の入側との間に並列に配置されている。このため、第１、第２の給湯器３０、３１の中で、点検又は補修に伴って一方を停止しても、他方を運転することにより、貯湯タンク１８に温水を供給することができる。 The hot water supply means 15 of the central hot water supply system 11 includes first and second hot water heaters 30 and 31 that form a pair in which one is in operation and the other is stopped. The first and second water heaters 30 and 31 are arranged in parallel between the downstream side of the water supply pipe 17 and the inlet side of the hot water storage tank 18. For this reason, even if one of the first and second water heaters 30 and 31 is stopped due to inspection or repair, the hot water can be supplied to the hot water storage tank 18 by operating the other.

続いて、本考案の一実施の形態に係るコジェネレーションシステム１０の作用について説明する。
ビルのコジェネレーションシステム１０で、発電設備１４で発電した電力（電気エネルギー）をビルの共用設備１２の共用灯１３に供給する場合、共用灯１３で使用される電力量は年間を通じて略一定水準に保たれるので、発電した電力が共用灯１３で完全に消費されるように発電設備１４を運転することができ、共用灯１３で使用する電力の購入量がなくなるため、ビルの共用設備１２で使用する電気エネルギーの購入量を少なくすることが可能になる。 Then, the effect | action of the cogeneration system 10 which concerns on one embodiment of this invention is demonstrated.
In the building cogeneration system 10, when the power (electric energy) generated by the power generation facility 14 is supplied to the shared lamp 13 of the shared building facility 12, the amount of power used by the shared lamp 13 is maintained at a substantially constant level throughout the year. Since the power generation facility 14 can be operated so that the generated power is completely consumed by the shared lamp 13 and the amount of power used for the shared lamp 13 is eliminated, the shared facility 12 of the building It becomes possible to reduce the purchase amount of electric energy to be used.

また、発電設備１４で発電した電力が共用灯１３で完全に消費されるように、即ち、発電量が一定となるように発電設備１４を安定運転することができるので、発電設備１４から一定量の熱エネルギーを安定的に回収することができる。このため、発電設備１４から回収した熱エネルギーを予備加熱設備１６に供給することにより、セントラル給湯システム１１の給湯手段１５に流入する水の温度を高めることができ、給湯手段１５で水を加熱する際に使用する熱エネルギー量を低減することができる。このため、セントラル給湯システム１１で使用する熱エネルギーの購入量を少なくすることが可能になる。
その結果、電気と熱の総エネルギーコストを低減することが可能となる。 In addition, since the power generation facility 14 can be stably operated so that the power generated by the power generation facility 14 is completely consumed by the common lamp 13, that is, the power generation amount is constant, a certain amount of power is generated from the power generation facility 14. Can be recovered stably. For this reason, the temperature of the water flowing into the hot water supply means 15 of the central hot water supply system 11 can be increased by supplying the thermal energy recovered from the power generation equipment 14 to the preliminary heating equipment 16, and the hot water supply means 15 heats the water. The amount of heat energy used at the time can be reduced. For this reason, it becomes possible to reduce the purchase amount of the heat energy used with the central hot-water supply system 11. FIG.
As a result, the total energy cost of electricity and heat can be reduced.

図２に、ビルのコジェネレーションシステム１０の変形例に係る予備加熱設備３２の説明図を示す。
予備加熱設備３２は、第１の発電手段２０のディーゼルエンジン２２を冷却する際に熱を回収する第１の熱回収部３３と、第２の発電手段２１のディーゼルエンジン２２を冷却する際に熱を回収する第２の熱回収部３４と、第１、第２熱回収部３３、３４を介して供給される熱で給水源と給湯手段１５（第１、第２の給湯器３０、３１）の入側とを接続する給水配管３５内を通過する水を加熱する予備加熱器３６とを有する。
このような構成とすることにより、第１の発電手段２０あるいは第１熱回収部３３が点検又は補修の際は第２の発電手段２１を運転し第２熱回収部３４を介して予備加熱器３６に熱を供給することにより、第２の発電手段２１あるいは第２熱回収部３４が点検又は補修の際は第１の発電手段２０を運転し第１熱回収部３３を介して予備加熱器３６に熱を供給することにより、ビルの共用設備１２の共用灯１３に電力を常に供給することができると共に、給水配管３５内を通過する水を常に加熱することができる。 In FIG. 2, the explanatory view of the preheating equipment 32 which concerns on the modification of the cogeneration system 10 of a building is shown.
The preheating facility 32 includes a first heat recovery section 33 that recovers heat when the diesel engine 22 of the first power generation means 20 is cooled, and heat when the diesel engine 22 of the second power generation means 21 is cooled. The second heat recovery section 34 for recovering the water and the water supply source 15 and the hot water supply means 15 (first and second water heaters 30, 31) by the heat supplied through the first and second heat recovery sections 33, 34 And a preheater 36 that heats water passing through the water supply pipe 35 connected to the inlet side of the water supply pipe 35.
With such a configuration, when the first power generation unit 20 or the first heat recovery unit 33 is inspected or repaired, the second power generation unit 21 is operated and the preheater is connected via the second heat recovery unit 34. By supplying heat to 36, when the second power generation means 21 or the second heat recovery section 34 checks or repairs, the first power generation means 20 is operated and the preheater is connected via the first heat recovery section 33. By supplying heat to 36, it is possible to always supply power to the shared lamp 13 of the common facility 12 of the building and to always heat the water passing through the water supply pipe 35.

以上、本考案を、実施の形態を参照して説明してきたが、本考案は何ら上記した実施の形態に記載した構成に限定されるものではなく、実用新案登録請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。
更に、本実施の形態とその他の実施の形態や変形例にそれぞれ含まれる構成要素を組合わせたものも、本考案に含まれる。
また、第１、第２の発電手段が共に動作不能の場合は、共用設備（特に共用灯）に商用電力を供給することもできる。 The present invention has been described above with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and is described in the claims of the utility model registration. Other embodiments and modifications conceivable within the scope of the matter are also included.
Further, the present invention includes a combination of constituent elements respectively included in this embodiment and other embodiments and modifications.
In addition, when both the first and second power generation units are inoperable, commercial power can be supplied to shared facilities (particularly, shared lamps).

１０：ビルのコジェネレーションシステム、１１：セントラル給湯システム、１２：共用設備、１３：共用灯、１４：発電設備、１５：給湯手段、１６：予備加熱設備、１７：給水配管、１８：貯湯タンク、１９：温水循環配管、２０：第１の発電手段、２１：第２の発電手段、２２：ディーゼルエンジン、２３：発電機、２４：第１の予備加熱手段、２５：第２の予備加熱手段、２６：第１の熱回収部、２７：第１の予備加熱器、２８：第２の熱回収部、２９：第２の予備加熱器、３０：第１の給湯器、３１：第２の給湯器、３２：予備加熱設備、３３：第１の熱回収部、３４：第２の熱回収部、３５：給水配管、３６：予備加熱器 10: Building cogeneration system, 11: Central hot water supply system, 12: Shared equipment, 13: Shared light, 14: Power generation equipment, 15: Hot water supply means, 16: Preheating equipment, 17: Water supply piping, 18: Hot water storage tank, 19: Hot water circulation piping, 20: First power generation means, 21: Second power generation means, 22: Diesel engine, 23: Generator, 24: First preheating means, 25: Second preheating means, 26: 1st heat recovery part, 27: 1st preheater, 28: 2nd heat recovery part, 29: 2nd preheater, 30: 1st hot water heater, 31: 2nd hot water supply 32: Preheating equipment, 33: First heat recovery section, 34: Second heat recovery section, 35: Feed water piping, 36: Preheater

Claims

A building cogeneration system with a central hot water system,
A power generation facility for supplying power to the common facilities of the building;
Preheating equipment that heats water supplied from a water supply source with heat recovered from the power generation equipment and supplies it to the inlet side of the hot water supply means of the central hot water supply system;
The building cogeneration system is characterized in that the water heated by the hot water supply means is held as hot water of 50 to 60 ° C. in a hot water storage tank of the central hot water supply system.

2. The building cogeneration system according to claim 1, wherein the power generation facility includes first and second power generation means that form a pair in which one is operating and the other is stopped.
The preheating facility includes a first heat recovery unit that recovers heat from the first power generation unit, and an inlet side of the water supply source and the hot water supply unit by heat supplied through the first heat recovery unit. A first preheating means provided with a first preheater for heating water passing through the water supply pipe connected to the second heat recovery section, and a second heat recovery section for recovering heat from the second power generation means, And a second preheating means comprising a second preheater for heating the water passing through the water supply pipe with the heat supplied through the second heat recovery section. Building cogeneration system.

2. The building cogeneration system according to claim 1, wherein the power generation facility includes first and second power generation means that form a pair in which one is operating and the other is stopped.
The preheating facility includes a first heat recovery unit that recovers heat from the first power generation unit, a second heat recovery unit that recovers heat from the second power generation unit, and the first and second A building cogeneration system comprising: a preheater that heats water passing through a water supply pipe that connects the water supply source and an inlet side of the hot water supply means with heat supplied through a heat recovery unit system.

The building cogeneration system according to claim 2 or 3, wherein each of the first and second power generation means includes a diesel engine and a generator that generates electric power with the power generated by the diesel engine. Characteristic building cogeneration system.

4. The building cogeneration system according to claim 2, wherein each of the first and second power generation means includes a fuel cell.

The building cogeneration system according to any one of claims 1 to 5, wherein the hot water supply means includes first and second hot water heaters that form a pair in which one is in operation and the other is stopped. The first and second water heaters are arranged in parallel between the downstream side of the water supply pipe and the inlet side of the hot water storage tank.

The building cogeneration system according to any one of claims 1 to 6, wherein the common facility includes a common lamp for the building.